JPH08278174A - Gas safety device - Google Patents
Gas safety deviceInfo
- Publication number
- JPH08278174A JPH08278174A JP8211595A JP8211595A JPH08278174A JP H08278174 A JPH08278174 A JP H08278174A JP 8211595 A JP8211595 A JP 8211595A JP 8211595 A JP8211595 A JP 8211595A JP H08278174 A JPH08278174 A JP H08278174A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- gas
- signal
- reference value
- abnormality
- 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
- 230000005856 abnormality Effects 0.000 claims abstract description 79
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 41
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 230000007423 decrease Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 153
- 230000008859 change Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 230000004044 response Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010017740 Gas poisoning Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
- Measuring Fluid Pressure (AREA)
- Examining Or Testing Airtightness (AREA)
- Pipeline Systems (AREA)
- Regulation And Control Of Combustion (AREA)
- Emergency Alarm Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガス供給装置を利用す
る上での安全を確保するガス安全装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas safety device for ensuring safety when using a gas supply device.
【０００２】[0002]
【従来の技術】従来の微少ガス漏洩検出装置としては、
例えば特開平４−９３７３９号公報に開示されているよ
うに、ガス供給路に設けられ予め設定した設定圧以上の
圧力を検知する圧力検知手段と、圧力検知手段による設
定圧以上の圧力の検知に応じて計数を行なう計数手段と
を備え、予め定めた期間内の計数手段の計数値が予め定
めた計数値以下のとき微少ガスが漏洩していると判断す
る構成のものが知られている。2. Description of the Related Art As a conventional minute gas leakage detection device,
For example, as disclosed in Japanese Unexamined Patent Publication No. 4-93739, there are a pressure detecting unit provided in a gas supply passage for detecting a pressure higher than a preset pressure and a pressure detecting unit detecting a pressure higher than the preset pressure. There is known a configuration that includes a counting unit that performs counting according to the above, and determines that the minute gas is leaking when the count value of the counting unit within a predetermined period is less than or equal to the predetermined count value.
【０００３】上記微少ガス漏洩検出装置の作用について
説明する。図６は横軸が１日の時刻、縦軸が外気温度と
圧力を示し、一点鎖線が外気温度、実線がガス配管内の
圧力変化を示す。１日の外気温度は、日の出と共に上昇
し、午後３〜４時頃にピークに達し、その後徐々に低下
するというパターンをとり、ガス配管自体の温度もこの
ような外気温度に左右される。ガス配管に漏洩がなく、
またガスが使用されておらずに圧力調整器が閉塞状態に
あるときには、外気温度によってガス配管内の圧力が変
化し、温度が高いときには低いときより圧力が上昇す
る。ある水準以上のガス漏洩のときには、外気温度が変
化しても圧力上昇は殆どなくなる。また、微少ガス漏洩
のときには圧力調整器の特性として圧力が極端に低下す
ることもない。すなわち、微少ガス漏洩がないとき、外
気温度の上昇によってガス供給路内の圧力が必ず予め設
定した調整器特性による閉塞圧力値より大きな圧力設定
値（点線）以上になり、かつ微少ガス漏洩があるときに
は何時も上記設定圧力以上になることがないという点に
着目し、ガス供給路に設けられた圧力検知手段による設
定値以上の圧力の検知に応じて計数手段が計数を行い、
予め定めた期間内の計数手段の計数値が予め定めた計数
値以下のとき微少ガスが漏洩していると判断できるよう
になっている。The operation of the minute gas leakage detection device will be described. In FIG. 6, the horizontal axis indicates the time of day, the vertical axis indicates the outside air temperature and pressure, the alternate long and short dash line indicates the outside air temperature, and the solid line indicates the pressure change in the gas pipe. The outside air temperature of the day rises with sunrise, reaches a peak around 3-4 pm, and then gradually decreases, and the temperature of the gas pipe itself also depends on such outside air temperature. There is no leak in the gas pipe,
When the gas is not used and the pressure regulator is in a closed state, the pressure in the gas pipe changes depending on the outside air temperature, and when the temperature is high, the pressure rises more than when the temperature is low. When the gas leaks above a certain level, there is almost no increase in pressure even if the outside air temperature changes. Further, the pressure does not drop extremely as a characteristic of the pressure regulator when a slight gas leaks. In other words, when there is no minute gas leakage, the pressure in the gas supply path must always be equal to or higher than the preset pressure value (dotted line) due to the preset regulator characteristics due to the rise in the outside air temperature, and there is minute gas leakage. Paying attention to the point that the pressure does not exceed the set pressure at any time, the counting means counts in response to the detection of the pressure equal to or higher than the set value by the pressure detection means provided in the gas supply path,
When the count value of the counting means within a predetermined period is less than or equal to the predetermined count value, it can be determined that the minute gas is leaking.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記従
来の構成では、外気温度の変化、すなわち、太陽によっ
て照射された配管部の温度上昇でガス供給路内の圧力が
上がる現象を利用してガス漏洩を検出しているので、少
なくともガス供給手段の一部が日射の当たる場所に設置
されていなくてはならず、ボンベなどの高圧ガス供給手
段および配管部が家屋内などに設置された状態のガスユ
ーザーに対しては従来の方式が適用できないという問題
があった。However, in the above-mentioned conventional structure, the gas leakage is caused by utilizing the phenomenon that the pressure in the gas supply passage rises due to the change of the outside air temperature, that is, the rise of the temperature of the pipe portion irradiated by the sun. Therefore, at least a part of the gas supply means must be installed in a place exposed to the sunlight, and the high-pressure gas supply means such as a cylinder and the pipe part must be installed inside the house. There is a problem that the conventional method cannot be applied to the user.
【０００５】また、その他の閉塞圧力異常、調整圧力異
常、又は供給圧力低下異常を確実に検出できるようにし
た安全装置もなく、使用上の安全確保が十分でないとい
う問題があった。Further, there is no safety device capable of surely detecting an abnormality of the blocking pressure, an abnormality of the adjusting pressure, or an abnormality of the supply pressure drop, and there is a problem that safety in use is not sufficiently ensured.
【０００６】本発明は、上記従来の問題点に鑑み、外気
温度の上昇に依存せずに微少ガス漏洩を確実に検出で
き、またガス供給設備である圧力調整手段の各種特性や
供給圧力の異常を確実に検出できるガス安全装置を提供
することを目的としている。In view of the above-mentioned conventional problems, the present invention can reliably detect a minute gas leak without depending on the rise of the outside air temperature, and also have various characteristics of the pressure adjusting means, which is a gas supply facility, and an abnormal supply pressure. It is an object of the present invention to provide a gas safety device that can reliably detect gas.
【０００７】[0007]
【課題を解決するための手段】本発明のガス安全装置
は、ボンベなどの高圧ガス供給手段からの高圧ガスを所
定の低圧ガスに変換して供給する圧力調整手段と、ガス
燃焼器具の器具栓開閉状態検出手段と、ガス燃焼器具の
器具栓より上流側の圧力を検出する圧力検出手段と、器
具栓開閉状態検出手段からの信号による器具栓の開閉情
報と圧力検出手段による検出圧力と適宜設定された圧力
の基準値から異常を判定する異常判別手段と、異常判別
手段からの信号で警報を発する報知手段とを備えたこと
を特徴とする。A gas safety device according to the present invention comprises a pressure adjusting means for converting a high pressure gas from a high pressure gas supply means such as a cylinder to a predetermined low pressure gas and supplying the same, and an instrument plug for a gas combustion instrument. Open / closed state detection means, pressure detection means for detecting the pressure upstream of the instrument plug of the gas combustion instrument, opening / closing information of the instrument plug based on a signal from the instrument plug open / closed state detection means, and pressure detected by the pressure detection means are appropriately set. The present invention is characterized in that it is provided with an abnormality determining means for determining an abnormality from the determined pressure reference value and an informing means for issuing an alarm by a signal from the abnormality determining means.
【０００８】上記異常判別手段は、器具栓が開状態から
閉状態に移行したときの圧力検出手段の信号が第１の基
準値より大きいか否かを判別し第１の基準値より大きい
とき閉塞圧力異常として信号を発するように構成され
る。The abnormality determining means determines whether or not the signal of the pressure detecting means when the instrument plug changes from the open state to the closed state is larger than the first reference value, and closes when the signal is larger than the first reference value. It is configured to emit a signal as a pressure abnormality.
【０００９】又は、異常判別手段は、器具栓が開状態か
ら閉状態に移行したときの圧力検出手段の信号が第２の
基準値より大きいか否かを判別し第２の基準値より小さ
いときガス漏洩として信号を発するように構成される。Alternatively, the abnormality determining means determines whether or not the signal of the pressure detecting means when the instrument plug changes from the open state to the closed state is larger than the second reference value, and when the signal is smaller than the second reference value. It is configured to signal as a gas leak.
【００１０】又は、異常判別手段は、器具栓が開状態の
ときの圧力検出手段の信号が第３の基準値より小さくま
た第４の基準値より大きいか否かを判別し基準値範囲外
のとき調整圧力異常として信号を発するように構成され
る。Alternatively, the abnormality discriminating means discriminates whether or not the signal of the pressure detecting means when the instrument plug is in the open state is smaller than the third reference value and larger than the fourth reference value and is out of the reference value range. It is configured to emit a signal when the adjusted pressure is abnormal.
【００１１】又は、異常判別手段は、器具栓が開状態の
ときの圧力検出手段の信号が第５の基準値より大きいか
否かを判別し第５の基準値より小さいとき供給圧力低下
として信号を発するように構成される。Alternatively, the abnormality judging means judges whether or not the signal of the pressure detecting means when the instrument plug is in the open state is larger than the fifth reference value, and when it is smaller than the fifth reference value, it is signaled as a supply pressure drop. Is configured to emit.
【００１２】また、異常判別手段からの信号を受けてガ
ス供給を停止するガス遮断手段が設けられ、さらにその
ガス遮断手段がガス燃焼器具の立ち消え安全装置のガス
遮断部と兼用される。Further, a gas cutoff means for stopping the gas supply upon receiving a signal from the abnormality determination means is provided, and the gas cutoff means is also used as the gas cutoff portion of the safety device for extinguishing the gas combustion equipment.
【００１３】[0013]
【作用】本発明のガス安全装置においては、圧力調整手
段によって高圧ガス供給手段からの高圧ガスが所定の低
圧ガスに変換されて供給され、器具栓開閉状態検出手段
にてガス燃焼器具の器具栓が開いているのか閉じている
のかを検出し、圧力検出手段にてガス燃焼器具の器具栓
より上流側の圧力を検出し、異常判別手段にて、器具栓
開閉状態検出手段からの信号による器具栓の開閉情報と
圧力検出手段による検出圧力と適宜設定された圧力の基
準値から異常を判定して信号を発し、報知手段にて異常
判別手段からの信号を受けて警報を発する。In the gas safety device of the present invention, the high pressure gas from the high pressure gas supply means is converted into a predetermined low pressure gas by the pressure adjusting means and supplied, and the equipment stopper of the gas combustion equipment is detected by the equipment plug open / closed state detecting means. Open or closed, the pressure detection means detects the pressure upstream of the instrument plug of the gas combustion instrument, and the abnormality determination means detects the signal from the instrument plug open / closed state detection instrument. An abnormality is determined based on the open / close information of the stopper, the pressure detected by the pressure detection means, and a reference value of the pressure that is set appropriately, and a signal is issued, and the notification means receives a signal from the abnormality determination means and issues an alarm.
【００１４】具体的には、異常判別手段にて器具栓が開
状態から閉状態に移行したときの圧力検出手段により検
出した圧力値を第１の基準値と比較し、検出した圧力値
の方が大きいとき閉塞圧力異常として信号を発し、報知
手段にて異常判別手段からの信号を受けて警報を発す
る。Specifically, the pressure value detected by the pressure detecting means when the instrument plug is changed from the open state to the closed state by the abnormality determining means is compared with the first reference value, and the detected pressure value is determined. When the value is large, a signal is issued as an occlusion pressure abnormality, and the notification means receives a signal from the abnormality determination means and issues an alarm.
【００１５】又は、異常判別手段にて器具栓が開状態か
ら閉状態に移行したときの圧力値が第１の基準値よりも
小さい第２の基準値より大きいか否かを判別し、第２の
基準値より小さいときガス漏洩として信号を発し、報知
手段がこの信号を受けて警報を発する。Alternatively, the abnormality determining means determines whether or not the pressure value when the instrument plug is changed from the open state to the closed state is larger than the second reference value which is smaller than the first reference value, and the second value is determined. When it is smaller than the reference value of, a signal is issued as a gas leak, and the notification means receives this signal and issues an alarm.
【００１６】又は、異常判別手段にて器具栓が開状態で
あるときの圧力値がそれぞれ第２の基準値よりも小さな
第３の基準値より小さくまた第４の基準値より大きいか
否かを判別し、基準値範囲外のとき調整圧力異常として
信号を発し、報知手段がこの信号を受けて警報を発す
る。Alternatively, whether or not the pressure value when the instrument plug is opened by the abnormality determining means is smaller than the third reference value smaller than the second reference value and larger than the fourth reference value, respectively. If it is determined that the pressure is out of the reference value range, a signal is output as an abnormal adjusted pressure, and the notification means receives this signal and issues an alarm.
【００１７】又は、異常判別手段にて器具栓が開状態で
あるときの圧力値が第４の基準値よりも小さな第５の基
準値より大きいか否かを判別し第５基準値より小さいと
き供給圧力低下として信号を発し、報知手段がこの信号
を受けて警報を発する。Alternatively, the abnormality determining means determines whether or not the pressure value when the instrument plug is in the open state is larger than the fifth reference value which is smaller than the fourth reference value, and is smaller than the fifth reference value. A signal is issued as a decrease in supply pressure, and the notification means receives this signal and issues an alarm.
【００１８】また、好適には異常判別手段から信号が発
せられたときガス遮断手段にてガス供給を停止する。そ
の際に、そのガス遮断手段をガス燃焼器具の立ち消え安
全装置のガス遮断部と兼用することにより、別途にガス
遮断手段を設ける必要がなく、安価に構成できる。Further, it is preferable that the gas supply means stop the gas supply when a signal is issued from the abnormality determining means. At that time, the gas shutoff means is also used as the gas shutoff part of the safety device for extinguishing the gas burning device, so that it is not necessary to separately provide the gas shutoff means, and the cost can be reduced.
【００１９】[0019]
【実施例】以下、本発明のガス安全装置の第１の実施例
を図１、図２及び図３を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the gas safety device of the present invention will be described below with reference to FIGS. 1, 2 and 3.
【００２０】図１において、１はボンベなどの高圧ガス
供給手段、２は高圧ガス供給手段１からの高圧ガスを所
定の低圧ガスに変換して供給する圧力調整手段である。
３は低圧ガスが供給されるガス燃焼器具で、器具栓開閉
状態検出手段４を備えている。５はガス燃焼器具３の器
具栓よりも上流側の圧力を検出する圧力検出手段であ
る。６は器具栓開閉状態検出手段４からの信号と圧力検
出手段５からの信号が入力され、各種異常状態を判別す
る異常判別手段である。７は異常判別手段６からの信号
を受けて警報を発する報知手段である。In FIG. 1, 1 is a high-pressure gas supply means such as a cylinder, and 2 is a pressure adjusting means for converting the high-pressure gas from the high-pressure gas supply means 1 into a predetermined low-pressure gas and supplying it.
Reference numeral 3 is a gas combustion appliance to which low-pressure gas is supplied, and is equipped with an appliance plug open / closed state detecting means 4. Reference numeral 5 is a pressure detecting means for detecting the pressure on the upstream side of the instrument plug of the gas combustion instrument 3. Reference numeral 6 denotes an abnormality determining means to which a signal from the instrument plug open / closed state detecting means 4 and a signal from the pressure detecting means 5 are input to determine various abnormal states. Reference numeral 7 is an informing means that receives a signal from the abnormality determining means 6 and issues an alarm.
【００２１】異常判別手段６は、器具栓開閉状態検出手
段４から器具栓が開状態から閉状態に移行したときの圧
力検出手段５の信号が第１の基準値より大きいか否かを
判別し大きいとき閉塞圧力異常として信号を発し、また
器具栓が開状態から閉状態に移行したときの圧力検出手
段５の信号が第１の基準値よりも小さな第２の基準値よ
り大きいか否かを判別し第２の基準値より小さいときガ
ス漏洩として信号を発し、また器具栓が開状態であると
きの圧力検出手段５の信号が第２の基準値よりも小さな
第３の基準値より小さくまた第４の基準値より大きいか
否かを判別し基準値範囲外のとき調整圧力異常として信
号を発し、また器具栓が開状態であるときの圧力検出手
段５の信号が第４の基準値よりも小さな第５の基準値よ
り小さいとき供給圧力低下として信号を発するように構
成されている。The abnormality discriminating means 6 discriminates whether or not the signal from the pressure detecting means 5 when the instrument stopper changes from the open state to the closed state is larger than the first reference value from the instrument plug opening / closing state detecting means 4. When it is large, a signal is issued as an occlusion pressure abnormality, and whether the signal of the pressure detecting means 5 when the instrument plug is changed from the open state to the closed state is larger than the second reference value smaller than the first reference value is determined. When it is determined that the value is smaller than the second reference value, a signal is emitted as a gas leak, and the signal of the pressure detecting means 5 when the instrument plug is in the open state is smaller than the second reference value and smaller than the third reference value. It is determined whether or not it is larger than the fourth reference value, and when it is out of the reference value range, a signal is output as an abnormal adjusted pressure, and the signal of the pressure detection means 5 when the instrument plug is in the open state is more than the fourth reference value. Supply when smaller than the 5th reference value And it is configured to emit a signal as a force reduction.
【００２２】図２はガス燃焼量と圧力調整手段の調整圧
力の関係を示す図である。横軸がガス燃焼量（ｋｃａｌ
／ｈ）を、縦軸が圧力（ｍｍＨ2 Ｏ）を示す。異常判別
手段６で比較される基準値は、例えば第１の基準値が５
００（ｍｍＨ2 Ｏ）、第２の基準値が３４０（ｍｍＨ2
Ｏ）、第３の基準値が３３０（ｍｍＨ2 Ｏ）、第４の基
準値が２３０（ｍｍＨ2 Ｏ）、第５の基準値が１００
（ｍｍＨ2 Ｏ）に設定される。ところで、ガス燃焼器具
３の最低燃焼量は５００（ｋｃａｌ／ｈ）程度で、圧力
調整手段２は約３０，０００（ｋｃａｌ／ｈ）までの調
整能力を有するものである。FIG. 2 is a diagram showing the relationship between the gas combustion amount and the adjusting pressure of the pressure adjusting means. The horizontal axis is the gas combustion amount (kcal
/ H) and the vertical axis represents the pressure (mmH 2 O). As the reference value compared by the abnormality determining means 6, for example, the first reference value is 5
00 (mmH 2 O), the second reference value is 340 (mmH 2 O
O), the third reference value is 330 (mmH 2 O), the fourth reference value is 230 (mmH 2 O), and the fifth reference value is 100.
(MmH 2 O). By the way, the minimum combustion amount of the gas combustion device 3 is about 500 (kcal / h), and the pressure adjusting means 2 has an adjusting ability up to about 30,000 (kcal / h).
【００２３】圧力調整手段２が正常な特性の場合、ガス
が流れていないときの閉塞圧力値は第１の基準値と第２
の基準値の中間に位置し、ガスが流れてガス燃焼器具３
が燃焼状態にあるときの調整圧力値は第３の基準値と第
４の基準値の間にある。また、第５の基準値は供給元の
ガス圧力が大幅に低下したことを検知するように設定さ
れた値である。When the pressure adjusting means 2 has a normal characteristic, the closing pressure value when gas is not flowing is the first reference value and the second reference value.
Located in the middle of the standard value of, gas flows and gas burning appliances 3
The adjusted pressure value when the engine is in the combustion state is between the third reference value and the fourth reference value. Further, the fifth reference value is a value set so as to detect that the gas pressure of the supply source has dropped significantly.
【００２４】ガス燃焼器具３を使用している状態、即ち
器具栓が開状態にあれば圧力検出手段５が検知する圧力
値は調整圧力範囲である第３の基準値と第４の基準値の
間にあり、その範囲外のときは調整圧力異常であること
を示し、さらに第５の基準値よりも小さいときは供給ガ
ス圧力の異常な低下が発生したことを示す。また、ガス
燃焼器具３を使い終わったとき、すなわち、器具栓が閉
状態にあれば圧力検出手段５が検知する圧力値は閉塞圧
力である第１の基準値より小さい位置にあり、大きいと
きは閉塞圧力異常が発生したことを示し、また器具栓が
閉状態でも第２の基準値より小さい圧力状態となってい
る場合は、ガス燃焼器具３の最低燃焼量５００（ｋｃａ
ｌ／ｈ）よりは少ないガス量がガス供給設備のどこかで
漏洩していることを示す。When the gas combustion appliance 3 is in use, that is, when the appliance plug is open, the pressure value detected by the pressure detecting means 5 is between the third reference value and the fourth reference value, which are adjustment pressure ranges. If it is in the range, and is out of the range, it indicates that the adjustment pressure is abnormal, and if it is smaller than the fifth reference value, it indicates that the supply gas pressure has abnormally decreased. When the gas combustion appliance 3 is used up, that is, when the appliance plug is in the closed state, the pressure value detected by the pressure detecting means 5 is at a position smaller than the first reference value which is the closing pressure, and when it is large, If the obstruction pressure abnormality is generated, and if the instrument plug is in a closed state and a pressure state smaller than the second reference value, the minimum combustion amount of the gas combustion instrument 3 is 500 (kca).
It shows that a gas amount smaller than 1 / h) is leaking somewhere in the gas supply equipment.
【００２５】器具栓が閉状態と開状態の間で移行したと
きの圧力変化特性を図３に示す。横軸は経過時間、縦軸
は器具栓の開閉状態と圧力検出手段５による検出圧力で
ある。Ｐ１〜Ｐ５はそれぞれ第１〜第５の基準値を示
す。図３は、ｔ1 時点でガス燃焼器具３が使われ始め、
ｔ2 時点で使い終わった場合を示し、器具栓が開状態か
ら閉状態へ移行したｔ2 時点以後の３つのケースを示し
ている。実線で示したＬ１は閉塞圧力が正常な場合であ
り、Ｐ１とＰ２の間に変化している。一点鎖線で示した
Ｌ２は閉塞圧異常の場合であり、Ｐ１よりも大きな値に
変化している。さらに、二点鎖線で示したＬ３は漏洩が
存在する場合であり、Ｐ２よりも小さい値に変化してい
る。FIG. 3 shows the pressure change characteristics when the instrument plug is moved between the closed state and the open state. The horizontal axis represents the elapsed time, and the vertical axis represents the open / closed state of the instrument plug and the pressure detected by the pressure detecting means 5. P1 to P5 indicate first to fifth reference values, respectively. In FIG. 3, the gas combustion appliance 3 starts to be used at time t 1 ,
It shows the case where the device is used up at the time point t 2 , and shows three cases after the time point t 2 when the instrument stopper is changed from the open state to the closed state. L1 shown by the solid line is the case where the closing pressure is normal, and changes between P1 and P2. L2 shown by the one-dot chain line is the case of abnormal occlusion pressure, and changes to a value larger than P1. Further, L3 shown by the chain double-dashed line is the case where leakage exists, and changes to a value smaller than P2.
【００２６】また、図３では示していないが、ｔ1 から
ｔ2 の間、すなわちガス燃焼器具３が利用されている期
間では器具栓は開状態であり、この間において圧力検出
手段５による検出圧力がＰ３及びＰ４の間にあれば正
常、外れていれば圧力調整手段２の調整圧力特性異常で
ある。さらに、Ｐ５を下回っていれば、大元のガス供給
圧力不足、すなわち高圧ガス供給手段１の内の燃料が不
足してきていることを示す。Although not shown in FIG. 3, the instrument plug is in the open state between t 1 and t 2 , that is, during the period when the gas combustion instrument 3 is used, and during this period, the pressure detected by the pressure detection means 5 is detected. Is between P3 and P4, it is normal, and if it is out of line, the adjusted pressure characteristic of the pressure adjusting means 2 is abnormal. Further, if it is lower than P5, it means that the gas supply pressure of the original source is insufficient, that is, the fuel in the high pressure gas supply means 1 is becoming insufficient.
【００２７】上記構成において、圧力調整手段２によっ
て高圧ガス供給手段１からの高圧ガスが所定の低圧ガス
に変換されてガス燃焼器具３に供給される。器具栓開閉
状態検出手段４はガス燃焼器具３の器具栓が開いている
のか閉じているのか、すなわちガス燃焼器具３が使用中
か否かを検出する。そして、圧力検出手段５はガス燃焼
器具３の器具栓より上流側の供給圧力である低圧を検出
する。異常判別手段６はガス燃焼器具３の器具栓の開状
態や開状態から閉状態に移行したときの検出圧力の異常
を判別して信号を発する。この信号を受けて報知手段７
は警報を発する。警報としては、音による報知であった
り、表示であったり、あるいは信号伝送による遠隔地へ
の通信であったりする。In the above structure, the high pressure gas from the high pressure gas supply means 1 is converted into a predetermined low pressure gas by the pressure adjusting means 2 and is supplied to the gas combustion appliance 3. The instrument plug open / closed state detection means 4 detects whether the instrument plug of the gas combustion instrument 3 is open or closed, that is, whether the gas combustion instrument 3 is in use. Then, the pressure detecting means 5 detects the low pressure which is the supply pressure on the upstream side of the instrument plug of the gas combustion instrument 3. The abnormality determining means 6 issues a signal by determining the abnormality of the detected pressure when the instrument plug of the gas combustion instrument 3 is in the open state or when the state is changed from the open state to the closed state. Receiving this signal, notification means 7
Gives an alarm. The alarm may be a notification by sound, a display, or a communication to a remote place by signal transmission.
【００２８】異常判別手段６は、器具栓開閉状態検出手
段４の信号から器具栓が開状態から閉状態に移行したと
きの圧力検出手段５の信号すなわち検出した圧力値を第
１の基準値（Ｐ１）と比較し、検出した圧力値の方が大
きいとき閉塞圧力異常として信号を発する。また、器具
栓が開状態から閉状態に移行したときの検出圧力値を第
２の基準値（Ｐ２）と比較し、検出した圧力値の方が小
さいときガス漏洩として信号を発する。また、器具栓が
開状態であるときの検出圧力値が第３の基準値（Ｐ３）
より小さくまた第４の基準値（Ｐ４）より大きいかを判
別し、基準値範囲（Ｐ３〜Ｐ４）外のとき、調整圧力異
常として信号を発する。また、器具栓が開状態であると
きの検出圧力値が第５の基準値（Ｐ５）より大きいか否
かを判別し、第５の基準値（Ｐ５）より小さいとき供給
圧力低下として信号を発する。The abnormality determining means 6 uses the signal of the pressure detecting means 5 when the instrument plug changes from the open state to the closed state based on the signal of the instrument plug open / closed state detecting means 4, that is, the detected pressure value as a first reference value ( In comparison with P1), when the detected pressure value is larger, a signal is issued as an occlusion pressure abnormality. Further, the detected pressure value when the instrument plug is changed from the open state to the closed state is compared with the second reference value (P2), and when the detected pressure value is smaller, a signal is emitted as gas leakage. Further, the detected pressure value when the instrument plug is in the open state is the third reference value (P3).
It is determined whether it is smaller or larger than the fourth reference value (P4), and when it is outside the reference value range (P3 to P4), a signal is output as an abnormal adjusted pressure. Further, it is determined whether or not the detected pressure value when the instrument plug is in the open state is larger than the fifth reference value (P5), and when it is smaller than the fifth reference value (P5), a signal is issued as a supply pressure drop. .
【００２９】このように本実施例によれば、異常判別手
段６が器具栓開閉状態検出手段４の信号から閉状態を監
視しつつ圧力検出手段５の圧力信号を読み込み、閉塞圧
力異常か否かを判定するので、ガス供給設備である圧力
調整手段２の閉塞特性の異常を確実に判定することがで
きる。As described above, according to the present embodiment, the abnormality discriminating means 6 reads the pressure signal of the pressure detecting means 5 while monitoring the closed state from the signal of the instrument plug opening / closing state detecting means 4 to determine whether or not the closing pressure is abnormal. Therefore, it is possible to reliably determine the abnormality of the blocking characteristic of the pressure adjusting means 2 which is the gas supply facility.
【００３０】また、異常判別手段６が器具栓開閉状態検
出手段４の信号から開状態から閉状態への移行を監視し
つつそのときの圧力検出手段５の圧力信号を読み込み、
圧力調整手段２の特性に照らし合わせてガスが漏洩して
いるか否かを判定するので、外気温度の上昇に依存せず
に微少ガス漏洩を検出することができる。すなわち、自
然現象である気温の変化に頼らずに確実に漏洩を検出す
ることができる。Further, the abnormality judging means 6 reads the pressure signal of the pressure detecting means 5 at that time while monitoring the transition from the open state to the closed state from the signal of the instrument plug open / closed state detecting means 4,
Since it is determined whether or not the gas is leaking according to the characteristics of the pressure adjusting means 2, it is possible to detect the minute gas leak without depending on the rise of the outside air temperature. That is, it is possible to reliably detect the leakage without depending on the change in the temperature which is a natural phenomenon.
【００３１】また、異常判別手段６が器具栓開閉状態検
出手段４の信号を監視しつつガス燃焼器具３が使用中で
あれば、圧力検出手段５の圧力信号を読み込み、規定さ
れた調整圧力範囲と比較判定するので、ガス供給設備で
ある圧力調整手段２の調整圧特性の異常を確実に判定す
ることができる。When the gas combustion appliance 3 is in use while the abnormality determining means 6 monitors the signal of the appliance plug open / closed state detecting means 4, the pressure signal of the pressure detecting means 5 is read and the regulated pressure range is defined. Therefore, it is possible to reliably determine the abnormality of the adjusting pressure characteristic of the pressure adjusting means 2 which is the gas supply facility.
【００３２】また、異常判別手段６はガス燃焼器具３の
器具栓動作情報と圧力検出手段５による供給圧力変化情
報をもとにガス供給設備の供給圧力低下異常を確実に判
定することができる。Further, the abnormality judging means 6 can surely judge the supply pressure drop abnormality of the gas supply equipment based on the appliance plug operation information of the gas combustion appliance 3 and the supply pressure change information by the pressure detecting means 5.
【００３３】次に、本発明のガス安全装置の第２の実施
例を図４を参照して説明する。なお、第１の実施例と共
通の構成要素については同一の参照番号を付して説明を
省略する。本実施例では、異常判別手段６からの信号を
受けてガス供給を停止するガス遮断手段８を備えてい
る。Next, a second embodiment of the gas safety device of the present invention will be described with reference to FIG. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In this embodiment, the gas cutoff means 8 is provided for stopping the gas supply upon receiving a signal from the abnormality determination means 6.
【００３４】上記構成において、ガス遮断手段８は、異
常判別手段６が閉塞圧力異常、ガス漏洩異常、調整圧力
異常、又は供給圧力低下異常を判定したとき、ガス燃焼
器具３へのガス供給を停止すべく作動する。In the above structure, the gas shutoff means 8 stops the gas supply to the gas combustion appliance 3 when the abnormality determination means 6 determines the blocking pressure abnormality, the gas leakage abnormality, the adjustment pressure abnormality, or the supply pressure decrease abnormality. Works as expected.
【００３５】この実施例によれば、ガス供給設備、特に
圧力調整手段２の特性異常が検出されたとき、ガスを遮
断しガス燃焼器具３の燃焼異常を防止することができ
る。また、ガス漏洩検出時にガス供給を停止するので、
ガス爆発の着火源を断つことができ、危険発生を抑制で
きる。According to this embodiment, when the characteristic abnormality of the gas supply equipment, particularly the pressure adjusting means 2 is detected, the gas can be shut off to prevent the combustion abnormality of the gas combustion device 3. Also, since the gas supply is stopped when a gas leak is detected,
The ignition source of gas explosion can be cut off, and the occurrence of danger can be suppressed.
【００３６】また、最近ではガス中毒（ＣＯ）対策のた
め、ガスコンロや瞬間湯沸器にも不完全燃焼防止用の立
ち消え安全装置が装着されてきている。そこで、ガス遮
断手段８をガス燃焼器具３の立ち消え安全装置のガス遮
断部と兼用する構成も可能である。Further, recently, as a countermeasure against gas poisoning (CO), a gas stove and an instantaneous water heater have been equipped with an extinguishing safety device for preventing incomplete combustion. Therefore, it is possible to use the gas cutoff means 8 also as the gas cutoff part of the safety device for extinguishing the gas combustion appliance 3.
【００３７】この構成によれば、ガス供給設備の異常時
にガス供給を停止するためのガス遮断手段８をわざわざ
別設する必要がなく、すでに器具内に存在するガス供給
停止機構を用いて機能を果たすことができる。すなわ
ち、システムとしての単純化、簡素化を図ることが可能
である。According to this structure, it is not necessary to separately provide the gas shut-off means 8 for stopping the gas supply when the gas supply equipment is in an abnormal state, and the function is achieved by using the gas supply stop mechanism already existing in the appliance. Can be fulfilled That is, it is possible to achieve simplification and simplification of the system.
【００３８】次に、本発明のガス安全装置の第３の実施
例を図５を参照して説明する。本実施例は、ガス燃焼器
具が複数存在する場合の例であり、図示例では２台のガ
ス燃焼器具３−１、３−２を備えている。４−１、４−
２は各ガス燃焼器具３−１、３−２の器具栓開閉状態検
出手段であり、その検出信号がそれぞれ異常判別手段９
が入力されている。Next, a third embodiment of the gas safety device of the present invention will be described with reference to FIG. The present embodiment is an example of the case where a plurality of gas burning appliances exist, and in the illustrated example, two gas burning appliances 3-1 and 3-2 are provided. 4-1 and 4-
Reference numeral 2 is a device plug open / closed state detecting means of each of the gas combustion appliances 3-1 and 3-2, and the detection signal thereof is an abnormality determining means 9 respectively.
Has been entered.
【００３９】異常判別手段９は、器具栓開閉状態検出手
段４−１又は４−２の信号から器具栓が開状態から閉状
態に移行したとき全ての器具栓が閉状態であれば、圧力
検出手段５の信号を第１の基準値より大きいか否か判別
し、大きいとき閉塞圧力異常として信号を発する。この
信号を受けて報知手段７は警報を発する。The abnormality determining means 9 detects the pressure when all the instrument plugs are in the closed state when the instrument plugs change from the open state to the closed state based on the signal from the instrument plug opening / closing state detecting means 4-1 or 4-2. It is determined whether or not the signal of the means 5 is larger than the first reference value, and when it is larger, a signal is emitted as an abnormal closing pressure. In response to this signal, the notification means 7 issues an alarm.
【００４０】また、器具栓開閉状態検出手段４−１又は
４−２の信号から器具栓が開状態から閉状態に移行した
とき全ての器具栓が閉状態であれば、圧力検出手段５の
信号を第２の基準値より大きいか否か判別し、小さいと
きガス漏洩として信号を発する。Further, when all the instrument plugs are in the closed state when the instrument plugs change from the open state to the closed state from the signal of the instrument plug open / closed state detecting means 4-1 or 4-2, the signal of the pressure detecting means 5 is outputted. Is larger than the second reference value, and when smaller than the second reference value, a signal is emitted as gas leakage.
【００４１】また、器具栓開閉状態検出手段４−１又は
４−２の信号から器具栓の少なくとも１つ以上が開状態
のとき圧力検出手段５の信号を第３の基準値及び第４の
基準値と比較し基準値範囲外のとき調整圧力異常として
信号を発する。Further, from at least one of the instrument plug open / closed state detecting means 4-1 or 4-2, when at least one of the instrument plugs is in the open state, the signal of the pressure detecting means 5 is changed to the third reference value and the fourth reference value. Compared with the value, when it is out of the reference value range, a signal is output as an abnormal adjusted pressure.
【００４２】また、器具栓開閉状態検出手段４−１又は
４−２の信号から器具栓の少なくとも１つ以上が開状態
のとき圧力検出手段５の信号を第５基準値と比較し小さ
いとき供給圧力低下として信号を発する。Further, from the signal of the instrument plug open / closed state detecting means 4-1 or 4-2, the signal of the pressure detecting means 5 is compared with the fifth reference value when at least one of the instrument plugs is in the open state, and supplied when it is smaller. Signals as a pressure drop.
【００４３】上記各構成によれば、複数のガス燃焼器具
が設置されている場合でも、閉塞圧力異常、ガス漏洩異
常、調整圧力異常、又は供給圧力低下異常を判定するこ
とができる。そして、異常判別手段９からの信号を受け
て報知し、又はガス供給を停止するなどの機能により安
全を確保することができる。According to each of the above-mentioned configurations, it is possible to determine a blocking pressure abnormality, a gas leakage abnormality, a regulation pressure abnormality, or a supply pressure decrease abnormality even when a plurality of gas combustion appliances are installed. Then, safety can be ensured by a function of receiving a signal from the abnormality determination means 9 to notify it, or stopping gas supply.
【００４４】ところで、異常判別手段６又は９による圧
力判定タイミングは、圧力調整手段２の過渡特性を考慮
し、器具栓の開閉動作信号入力後、所定の遅延時間をと
って計測することもガス供給システムの構成によっては
必要である。しかし、外気温度の影響を受けにくい状態
で閉塞圧力を検出する必要があるので、遅延時間は数分
内に留めなくてはならない。The pressure determination timing by the abnormality determination means 6 or 9 can be measured by taking a predetermined delay time after inputting the opening / closing operation signal of the instrument plug in consideration of the transient characteristic of the pressure adjusting means 2. Required depending on system configuration. However, since it is necessary to detect the closing pressure in a state where it is not easily affected by the outside air temperature, the delay time must be kept within a few minutes.
【００４５】また、異常判定は一度だけで行なうのでは
なく、所定回数発生時点、あるいは所定時間内での所定
回数発生時点で確定させるなどの構成もある。このよう
に複数回の判定を実施することにより、確実な異常検出
を行なうことができる。There is also a configuration in which the abnormality determination is not performed only once, but is decided at a predetermined number of times of occurrence or at a predetermined number of times of occurrence within a predetermined time. By performing the determination a plurality of times in this way, reliable abnormality detection can be performed.
【００４６】さらに、ガス燃焼器具に口火がある場合に
は、器具栓が種燃焼炎制御用とするとガス漏れ誤判定を
起こす危険性がある。そこで、保有するガス燃焼器具の
種類に応じてユーザー毎に第２の基準値を可変する構成
も有効である。Further, when the gas burning appliance has a igniting flame, if the appliance plug is for controlling the seed combustion flame, there is a risk of erroneous determination of gas leakage. Therefore, it is also effective to change the second reference value for each user in accordance with the type of gas combustion appliance held.
【００４７】そして本発明のガス安全装置は、ガス供給
設備が屋内設置であったり、あるいはガス計量メータが
存在しないガス供給形態での簡易な安全確保手段として
効果がある。The gas safety device of the present invention is effective as a simple safety ensuring means in the gas supply mode in which the gas supply facility is installed indoors or the gas meter does not exist.
【００４８】[0048]
【発明の効果】本発明のガス安全装置によれば、以上の
説明から明らかなように、器具栓の開閉情報と圧力検出
手段による検出圧力と適宜設定された圧力の基準値から
異常を判定して信号を発し、報知手段にて異常判別手段
からの信号を受けて警報を発するので、ガスの異常状態
を確実に判定することができる。According to the gas safety device of the present invention, as is clear from the above description, the abnormality is judged from the opening / closing information of the instrument plug, the pressure detected by the pressure detecting means, and the reference value of the pressure set appropriately. And a warning is issued by the notifying means in response to the signal from the abnormality determining means, the abnormal state of the gas can be reliably determined.
【００４９】特に、器具栓が開状態から閉状態に移行し
たときの圧力値が第１の基準値より大きいときに閉塞圧
力異常として警報を発することにより、ガス供給設備で
ある圧力調整手段の閉塞特性の異常を確実に判定するこ
とができる。In particular, when the pressure value when the instrument plug is changed from the open state to the closed state is larger than the first reference value, an alarm is issued as a blockage pressure abnormality to block the pressure adjusting means which is the gas supply facility. It is possible to reliably determine the characteristic abnormality.
【００５０】また、器具栓が開状態から閉状態に移行し
たときの圧力値が第２の基準値より小さいときガス漏洩
として警報を発することにより、外気温度の上昇に依存
せずに微少ガス漏洩を検出することができる。すなわ
ち、自然現象である気温の変化に頼らずに確実に漏洩を
検出することができる。Further, when the pressure value when the instrument plug is changed from the open state to the closed state is smaller than the second reference value, an alarm is issued as a gas leak, so that a minute gas leak does not depend on the rise of the outside air temperature. Can be detected. That is, it is possible to reliably detect the leakage without depending on the change in the temperature which is a natural phenomenon.
【００５１】また、器具栓が開状態であるときの圧力値
が第３の基準値と第４の基準値の範囲外のとき調整圧力
異常として警報を発することにより、ガス供給設備であ
る圧力調整手段の調整圧特性の異常を確実に判定するこ
とができる。Further, when the pressure value when the instrument plug is in the open state is out of the range of the third reference value and the fourth reference value, an alarm is issued as an abnormal adjustment pressure, so that the pressure adjustment of the gas supply equipment is performed. It is possible to reliably determine the abnormality of the adjusting pressure characteristic of the means.
【００５２】また、器具栓が開状態であるときの圧力値
が第５の基準値より小さいとき供給圧力低下として警報
を発することにより、ガス供給設備の供給圧力低下異常
を確実に判定することができる。Further, when the pressure value when the instrument plug is in the open state is smaller than the fifth reference value, an alarm is issued as a supply pressure drop, so that the supply pressure drop abnormality of the gas supply equipment can be reliably determined. it can.
【００５３】また、異常判別手段から信号が発せられた
ときガス供給を停止するガス遮断手段を設けることによ
り、ガス燃焼器具の燃焼異常を防止することができ、ま
たガス漏洩検出時にガス供給を停止できるのでガス爆発
の着火源を断つことができ、危険発生を抑制できる。Further, by providing the gas shut-off means for stopping the gas supply when the signal is issued from the abnormality judging means, it is possible to prevent the combustion abnormality of the gas combustion equipment, and to stop the gas supply when the gas leakage is detected. As a result, the ignition source of the gas explosion can be cut off and the danger can be suppressed.
【００５４】さらに、ガス遮断手段をガス燃焼器具の立
ち消え安全装置のガス遮断部と兼用すると、別途にガス
遮断手段を設ける必要がなく、システムとしての単純
化、簡素化を図って安価に構成できる。Furthermore, if the gas shut-off means is also used as the gas shut-off portion of the safety device for extinguishing the gas combustion equipment, it is not necessary to provide a separate gas shut-off means, and the system can be simplified and simplified and can be constructed at low cost. .
【図１】本発明のガス安全装置の第１の実施例の構成を
示すブロック図である。FIG. 1 is a block diagram showing a configuration of a first embodiment of a gas safety device of the present invention.
【図２】ガス燃焼量と圧力調整手段の調整圧力の関係を
示す図である。FIG. 2 is a diagram showing a relationship between a gas combustion amount and an adjustment pressure of a pressure adjusting means.
【図３】同実施例における器具栓の開閉による圧力変化
を示す図である。FIG. 3 is a diagram showing a pressure change due to opening / closing of a device plug in the same embodiment.
【図４】本発明のガス安全装置の第２の実施例の構成を
示すブロック図である。FIG. 4 is a block diagram showing the configuration of a second embodiment of the gas safety device of the present invention.
【図５】本発明のガス安全装置の第３の実施例の構成を
示すブロック図である。FIG. 5 is a block diagram showing the configuration of a third embodiment of the gas safety device of the present invention.
【図６】従来例の微少ガス漏洩検出装置の検出作用の説
明図である。FIG. 6 is an explanatory diagram of a detection action of a conventional minute gas leakage detection device.
１ 高圧ガス供給手段 ２ 圧力調整手段 ４ 器具栓開閉状態検出手段 ５ 圧力検出手段 ６ 異常判別手段 ７ 報知手段 ８ ガス遮断手段 ９ 異常判別手段 DESCRIPTION OF SYMBOLS 1 High-pressure gas supply means 2 Pressure adjustment means 4 Instrument plug opening / closing state detection means 5 Pressure detection means 6 Abnormality determination means 7 Notification means 8 Gas shutoff means 9 Abnormality determination means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木全 國雄 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 難波 三男 東京都町田市忠生２丁目16番４号 高圧ガ ス保安協会液化石油ガス研究所内 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kunio Kizen 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Safety Association Liquefied Petroleum Gas Laboratory
Claims (7)
圧ガスを所定の低圧ガスに変換して供給する圧力調整手
段と、ガス燃焼器具の器具栓開閉状態検出手段と、ガス
燃焼器具の器具栓より上流側の圧力を検出する圧力検出
手段と、器具栓開閉状態検出手段からの信号による器具
栓の開閉情報と圧力検出手段による検出圧力と適宜設定
された圧力の基準値から異常を判定する異常判別手段
と、異常判別手段からの信号で警報を発する報知手段と
を備えたことを特徴とするガス安全装置。1. A pressure adjusting means for converting a high-pressure gas from a high-pressure gas supply means such as a cylinder to a predetermined low-pressure gas and supplying the same, an instrument plug open / closed state detecting means for a gas combustion instrument, and an instrument plug for the gas combustion instrument. Abnormality to judge abnormality from pressure detection means for detecting the pressure on the upstream side, opening / closing information of the instrument plug by the signal from the instrument plug open / closed state detection means, pressure detected by the pressure detection means and reference value of the pressure set appropriately A gas safety device comprising: a discriminating means and an informing means for issuing an alarm by a signal from the abnormality discriminating means.
状態に移行したときの圧力検出手段の信号が第１の基準
値より大きいか否かを判別し第１の基準値より大きいと
き閉塞圧力異常として信号を発するように構成したこと
を特徴とする請求項１記載のガス安全装置。2. The abnormality determining means determines whether or not the signal of the pressure detecting means when the instrument plug changes from the open state to the closed state is larger than a first reference value, and when it is larger than the first reference value. The gas safety device according to claim 1, wherein the gas safety device is configured to emit a signal as a blockage pressure abnormality.
状態に移行したときの圧力検出手段の信号が第２の基準
値より大きいか否かを判別し第２の基準値より小さいと
きガス漏洩として信号を発するように構成したことを特
徴とする請求項１記載のガス安全装置。3. The abnormality determining means determines whether or not the signal of the pressure detecting means when the instrument plug changes from the open state to the closed state is larger than a second reference value, and when it is smaller than the second reference value. The gas safety device according to claim 1, wherein the gas safety device is configured to emit a signal as a gas leak.
の圧力検出手段の信号が第３の基準値より小さくまた第
４の基準値より大きいか否かを判別し基準値範囲外のと
き調整圧力異常として信号を発するように構成したこと
を特徴とする請求項１記載のガス安全装置。4. The abnormality determining means determines whether or not the signal of the pressure detecting means when the instrument plug is in the open state is smaller than the third reference value and larger than the fourth reference value, and is out of the reference value range. The gas safety device according to claim 1, wherein the gas safety device is configured to emit a signal when the adjusted pressure is abnormal.
の圧力検出手段の信号が第５の基準値より大きいか否か
を判別し第５の基準値より小さいとき供給圧力低下とし
て信号を発するように構成したことを特徴とする請求項
１記載のガス安全装置。5. The abnormality judging means judges whether or not the signal of the pressure detecting means when the instrument plug is in the open state is larger than a fifth reference value, and when it is smaller than the fifth reference value, a signal indicating a decrease in supply pressure is given. The gas safety device according to claim 1, wherein the gas safety device is configured to emit a gas.
給を停止するガス遮断手段を備えたことを特徴とする請
求項１記載のガス安全装置。6. The gas safety device according to claim 1, further comprising gas cutoff means for stopping the gas supply upon receiving a signal from the abnormality determination means.
安全装置のガス遮断部と兼用したことを特徴とする請求
項６記載のガス安全装置。7. The gas safety device according to claim 6, wherein the gas shut-off means is also used as a gas shut-off portion of the safety device for extinguishing the gas combustion equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7082115A JP3069266B2 (en) | 1995-04-07 | 1995-04-07 | Gas safety equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7082115A JP3069266B2 (en) | 1995-04-07 | 1995-04-07 | Gas safety equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08278174A true JPH08278174A (en) | 1996-10-22 |
| JP3069266B2 JP3069266B2 (en) | 2000-07-24 |
Family
ID=13765415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7082115A Expired - Fee Related JP3069266B2 (en) | 1995-04-07 | 1995-04-07 | Gas safety equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3069266B2 (en) |
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| JP2012127661A (en) * | 2010-12-13 | 2012-07-05 | Panasonic Corp | Method and device for detecting small gas leakage |
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| JP2012127661A (en) * | 2010-12-13 | 2012-07-05 | Panasonic Corp | Method and device for detecting small gas leakage |
| CN103148352A (en) * | 2013-03-06 | 2013-06-12 | 中冶南方工程技术有限公司 | Coal gas water seal roof collapse early warning system and method thereof |
| CN109386737A (en) * | 2017-08-09 | 2019-02-26 | 中国石油化工股份有限公司 | Oxidizing combustible system safety cut-off valve leak detecting device and method |
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| Publication number | Publication date |
|---|---|
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