JP2003088596A - Weight loss detector for fire-extinguisher storage cylinder - Google Patents
Weight loss detector for fire-extinguisher storage cylinderInfo
- Publication number
- JP2003088596A JP2003088596A JP2001283321A JP2001283321A JP2003088596A JP 2003088596 A JP2003088596 A JP 2003088596A JP 2001283321 A JP2001283321 A JP 2001283321A JP 2001283321 A JP2001283321 A JP 2001283321A JP 2003088596 A JP2003088596 A JP 2003088596A
- Authority
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- Japan
- Prior art keywords
- pressure
- temperature
- storage container
- weight loss
- value
- 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.)
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- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガス系消火設備の
消火剤貯蔵容器の減量検出装置に関し、特に、温度変化
により増減する圧力を補正して消火剤貯蔵容器の減量を
検出し、使用温度範囲の下限から上限に亘り、さらに１
本の消火剤貯蔵容器においても、消火剤貯蔵容器の漏洩
を早期に正確に検出することができる消火剤貯蔵容器の
減量検出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 device for detecting a decrease in the extinguishant storage container of a gas-based fire extinguishing facility, and in particular, it detects a decrease in the extinguishant storage container by correcting the pressure that increases or decreases due to a temperature change, and determines the operating temperature. From the lower limit to the upper limit of the range, 1 more
The present extinguishant storage container also relates to an extinguishant storage container weight loss detection device capable of accurately detecting leakage of the extinguishant storage container at an early stage.
【０００２】[0002]
【従来の技術】従来、ガス系消火設備の消火剤貯蔵容器
の漏洩による減量を検出するために、圧力スイッチを使
用した消火剤貯蔵容器の減量検出装置が使用されてい
る。この圧力スイッチを使用した減量検出装置では、温
度低下にともなう消火剤貯蔵容器内の圧力の減少によ
り、消火剤が減量していないのにもかかわらず誤って警
報が発せられることがある。この誤警報を避けるために
は、消火設備の使用温度範囲（一般的には−２０℃〜＋
４０℃）内の使用下限の温度で、警報用の設定圧力値を
設定することになるが、最低使用温度を−２０℃とした
場合、通常の環境温度の２５℃からみると１５％減量し
た場合と同じ圧力となる。すなわち、この従来の消火剤
貯蔵容器の減量検出装置は、常温では、圧力が２０％減
量した場合にはじめて警報を発するしかなかった。しか
も、このような圧力スイッチは、最新の技術を使用した
半導体式圧力センサーでのみ実現可能であり、従来から
使用されてきた比較的安価な圧力スイッチは金属製のダ
イアフラムの一定圧力での反転現象を利用しているため
接点の開閉の応差（ヒステリシス）が大きく最高使用圧
力に対し５〜１０％の幅が必要であるため、さらに３Ｍ
Ｐａ、すなわち、約３０％減量した場合に警報を発する
ように設定するしかなかった。2. Description of the Related Art Conventionally, an extinguishant storage container weight loss detecting device using a pressure switch has been used to detect a weight loss due to leakage of an extinguishant storage vessel of a gas fire extinguishing facility. In the weight loss detection device using this pressure switch, an alarm may be erroneously issued due to a decrease in pressure in the extinguishant storage container due to a temperature decrease, even though the amount of the extinguishant is not reduced. In order to avoid this false alarm, the operating temperature range of the fire extinguishing equipment (generally -20 ℃ ~ +
The set pressure value for alarm will be set at the lower limit temperature within 40 ° C), but when the minimum operating temperature is -20 ° C, it is reduced by 15% from the normal environmental temperature of 25 ° C. The pressure is the same as in the case. In other words, this conventional extinguishant storage container weight loss detection device has no choice but to issue an alarm at room temperature only when the pressure is reduced by 20%. Moreover, such a pressure switch can be realized only with a semiconductor type pressure sensor using the latest technology, and the relatively inexpensive pressure switch that has been conventionally used is a reversal phenomenon at a constant pressure of a metal diaphragm. Because the contact opening / closing hysteresis (hysteresis) is large and a width of 5-10% with respect to the maximum operating pressure is required, a further 3M
The only option was to set Pa to give an alarm when the amount was reduced by about 30%.
【０００３】ところで、ガス系消火設備は、オゾン問題
に端を発するハロン１３０１の生産中止や使用制限によ
り、消火効力が劣るが、環境に悪影響を与えないため、
大気中の成分から抽出した不活性の性質をもった窒素、
アルゴンあるいはその混合気体を消火剤として使うよう
になってきている。この窒素ガス消火設備の場合を例に
とると、設計消火剤濃度は、消防庁通知に基づく装置を
使用してｎ−ヘプタンに対する消炎濃度３３．６％を測
定し、この消炎濃度を基準値として、これに安全係数
１．２を乗じた値４０．３％としており、この設計濃度
に対する酸素濃度は１２．５％である。By the way, the gas-based fire extinguishing equipment is inferior in fire extinguishing effect due to the production suspension and use limitation of Halon 1301 which is caused by the ozone problem, but since it does not adversely affect the environment,
Nitrogen with inert properties extracted from atmospheric components,
Argon or its mixed gas has come to be used as an extinguishing agent. Taking the case of this nitrogen gas fire extinguishing equipment as an example, the designed extinguishant concentration is 33.6% of the extinction concentration with respect to n-heptane measured using a device based on the notification of the Fire Agency, and this extinction concentration is taken as a reference value. The value obtained by multiplying this by a safety factor of 1.2 is 40.3%, and the oxygen concentration with respect to this design concentration is 12.5%.
【０００４】液体燃料として一般的に使用される液体可
燃物（ガソリン、軽油、Ａ重油等）や電力あるいは通信
に使用するケーブルさらには木材の燃焼に対する消火性
能は、設計濃度４０．３％で消火することは公的に確認
されている。すなわち、前記したように、消火剤の２０
％以上の減量で初めて警報を発する減量検出装置が作動
したときには、消火に対する安全係数が１以下になった
ときであり、このような性能では警報装置として完全で
あるとはいえない。もちろん、一般的な窒素ガス消火設
備は、平均的には３０本程度となり、消火剤貯蔵容器が
１本というケースは少なく、そのうちの１本が減量警報
を発したときに点検すればよいとの考えもあるが、最近
急速に展開されている携帯電話の中継基地の場合、機器
が高性能省スペースとなってきたこともあり、小さなキ
ュービクルでビルの屋上等に設置されるケースが多く、
４０ｍ3程度が防護可能な標準的な容器１本で済む条件
も増えてきており、消火剤貯蔵容器の減量検出装置とし
ては非常に不十分なものであった。また、従来のハロン
１３０１消火剤の場合は、人体に対する急性毒性試験に
よる無影響濃度まで設計濃度上で余裕があり、その分を
余分に設置する方法もあったが、窒素ガス等の場合、酸
素濃度を１０％以下にすることは人体に悪影響を与える
可能性があるため、設計量以上の量、例えば、設計量の
２倍を貯蔵し、その全量を放出する訳にはいかなくなっ
ており、消火剤の減量検出装置としては極めて不十分な
ものであった。Extinguishing performance against combustion of liquid combustible materials (gasoline, light oil, heavy oil A, etc.) generally used as liquid fuel, cables used for electric power or communication, and wood is extinguished at a design concentration of 40.3%. It is officially confirmed. That is, as described above, 20
When the weight loss detection device that issues an alarm for the first time with a weight loss of at least%, the safety factor against fire extinguishing becomes 1 or less, and such performance cannot be said to be perfect as an alarm device. Of course, general nitrogen gas fire extinguishing equipment is about 30 on average, and there are few cases where there is one extinguishant storage container, and one of them should be inspected when a weight loss alarm is issued. Although there is an idea, in the case of a mobile phone relay station that is rapidly expanding recently, the equipment has become high performance and space saving, and in many cases it is installed in a small cubicle on the roof of a building,
The number of conditions in which a standard container that can protect approximately 40 m 3 is sufficient has been increasing, and it was extremely insufficient as a weight loss detection device for extinguishant storage containers. In the case of the conventional Halon 1301 fire extinguisher, there is a margin in the design concentration up to the non-effect concentration by the acute toxicity test on the human body, and there was also a method of installing the extra amount, but in the case of nitrogen gas, etc. Since reducing the concentration to 10% or less may adversely affect the human body, it is no longer possible to store an amount more than the designed amount, for example, twice the designed amount, and release the entire amount. It was extremely inadequate as an extinguishing agent weight loss detection device.
【０００５】一方、本願出願人による特公昭６０−３４
９８号公報に示されるように、消火剤貯蔵容器毎に圧力
を測定し、最小値と平均値を比較することにより、減量
した消火剤貯蔵容器を判別する消火剤貯蔵容器の減量検
出装置もあるが、多数の消火剤貯蔵容器では極めて有効
である反面、少数の消火剤貯蔵容器には適用できず、当
然、１本の消火剤貯蔵容器に対しては対応することがで
きなかった。また、この消火剤貯蔵容器の減量検出装置
は、データを集中管理し演算する計算機と表示装置が必
要であり、高価なものとならざるを得ず、さらに、容器
室自体に温度差がある上に、消火剤貯蔵容器の温度も場
所により差があることから、精度が低下するという問題
があった。また、部屋の一箇所の温度を計測し、対応す
る内圧を求める場合も、場所による温度差が相当あり、
また、通風の影響等もあり、一日の各時間での受放熱量
に相当差がでてきて貯蔵容器個々の温度を計測しない
と、検出精度が大幅に低下するという問題があった。Meanwhile, Japanese Patent Publication No. 60-34
As disclosed in Japanese Patent Publication No. 98, there is also a fire extinguishant storage container weight loss detection device for determining the reduced fire extinguisher storage container by measuring the pressure for each fire extinguishant storage container and comparing the minimum value and the average value. However, while it is extremely effective in a large number of extinguishant storage containers, it cannot be applied to a small number of extinguishant storage containers, and naturally, it cannot be applied to one extinguishant storage container. In addition, this device for detecting the weight loss of the extinguishant storage container requires a computer and a display device for centrally managing and calculating the data, which is inevitably expensive, and further there is a temperature difference in the container chamber itself. In addition, since the temperature of the extinguishant storage container also varies depending on the location, there is a problem in that the accuracy decreases. Also, when measuring the temperature of one place in the room and finding the corresponding internal pressure, there is a considerable temperature difference depending on the place,
Further, due to the influence of ventilation, there is a considerable difference in the amount of heat received and released at each hour of the day, and unless the temperature of each storage container is measured, there is a problem in that the detection accuracy drops significantly.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、上記従来の
消火剤貯蔵容器の減量検出装置が有する問題点に鑑み、
温度変化により増減する圧力を補正して消火剤貯蔵容器
の減量を検出し、使用温度範囲の下限から上限に亘り、
さらに１本の消火剤貯蔵容器においても、消火剤貯蔵容
器の漏洩を早期に正確に検出することができる消火剤貯
蔵容器の減量検出装置を提供することを目的とする。DISCLOSURE OF THE INVENTION The present invention has been made in view of the problems of the conventional weight loss detection apparatus for extinguishant storage containers described above.
Detects the reduction of the extinguishant storage container by compensating the pressure that increases and decreases due to temperature changes, and extends from the lower limit to the upper limit of the operating temperature range,
It is another object of the present invention to provide a weight loss detection device for a fire extinguisher storage container capable of accurately detecting leakage of the fire extinguisher storage container even in a single fire extinguisher storage container.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するた
め、本第１発明の消火剤貯蔵容器の減量検出装置は、ガ
ス系消火剤を充填した消火剤貯蔵容器の減量を検出する
消火剤貯蔵容器の減量検出装置において、消火剤貯蔵容
器内の圧力を検出する圧力センサーと、消火剤貯蔵容器
内の温度を検出する温度センサーと、温度に対応する警
報設定圧力値を記憶し、前記圧力センサー及び温度セン
サーの圧力検出値及び温度検出値に基づいて、該圧力検
出値を、該温度検出値に対応する温度の警報設定圧力値
と比較して消火剤貯蔵容器の減量を判定する圧力判定手
段とを備えたことを特徴とする。In order to achieve the above object, a device for detecting a decrease in the extinguishant storage container according to the first aspect of the present invention is an extinguishant storage for detecting a decrease in the extinguishant storage container filled with a gas-based extinguishant. In a container weight loss detection device, a pressure sensor for detecting the pressure in the extinguishant storage container, a temperature sensor for detecting the temperature in the extinguishant storage container, and an alarm set pressure value corresponding to the temperature are stored, and the pressure sensor And a pressure determination means for determining the amount of the extinguishant storage container by comparing the detected pressure value with an alarm set pressure value of the temperature corresponding to the detected temperature value based on the detected pressure value and the detected temperature value of the temperature sensor. It is characterized by having and.
【０００８】この消火剤貯蔵容器の減量検出装置は、計
測した圧力検出値及び温度検出値に基づいて、この圧力
検出値を、計測した温度検出値に対応する温度の警報設
定圧力値と比較して消火剤貯蔵容器の減量を判定するこ
とから、温度変化により増減する圧力を補正して消火剤
貯蔵容器の減量を検出することができ、これにより、使
用温度範囲の下限から上限に亘り、さらに１本の消火剤
貯蔵容器においても、消火剤貯蔵容器の漏洩を早期に正
確に検出することができる。Based on the measured pressure detection value and the temperature detection value, the extinguishant storage container weight loss detection device compares the pressure detection value with an alarm set pressure value of the temperature corresponding to the measured temperature detection value. Since the amount of the extinguishant storage container is judged to decrease, it is possible to correct the pressure that increases or decreases due to the temperature change and detect the amount of the extinguishant storage container, and thus the lower limit to the upper limit of the operating temperature range, and Even with one extinguishant storage container, the leakage of the extinguishant storage container can be detected accurately at an early stage.
【０００９】また、同じ目的を達成するため、本第２発
明の消火剤貯蔵容器の減量検出装置は、ガス系消火剤を
充填した消火剤貯蔵容器の減量を検出する消火剤貯蔵容
器の減量検出装置において、消火剤貯蔵容器内の圧力を
検出する圧力センサーと、消火剤貯蔵容器内の温度を検
出する温度センサーと、これら圧力センサー及び温度セ
ンサーの圧力検出値及び温度検出値に基づいて、該圧力
検出値を所定の基準温度での換算圧力値として演算する
圧力演算手段と、該換算圧力値をこの基準温度での警報
設定圧力値と比較して消火剤貯蔵容器の減量を判定する
圧力判定手段とを備えたことを特徴とする。Further, in order to achieve the same object, the apparatus for detecting the decrease of the extinguishant storage container according to the second aspect of the present invention detects the decrease in the amount of the extinguishant storage container filled with the gas-based extinguishant. In the device, a pressure sensor for detecting the pressure in the extinguishant storage container, a temperature sensor for detecting the temperature in the extinguishant storage container, based on the pressure detection value and the temperature detection value of these pressure sensor and temperature sensor, Pressure calculation means for calculating the detected pressure value as a converted pressure value at a predetermined reference temperature, and a pressure judgment for comparing the converted pressure value with an alarm set pressure value at this reference temperature to judge the reduction of the extinguishant storage container And means.
【００１０】この消火剤貯蔵容器の減量検出装置は、実
際の圧力検出値及び温度検出値に基づいて、この圧力検
出値を基準温度での換算圧力値として演算し、この換算
圧力値をこの基準温度での警報設定圧力値と比較して消
火剤貯蔵容器の減量を判定することから、温度変化によ
り増減する圧力を補正して消火剤貯蔵容器の減量を検出
することができ、これにより、使用温度範囲の下限から
上限に亘り、さらに１本の消火剤貯蔵容器においても、
消火剤貯蔵容器の漏洩を早期に正確に検出することがで
きる。The depletion detecting device for the extinguishant storage container calculates the detected pressure value as a converted pressure value at the reference temperature based on the actual detected pressure value and the detected temperature value, and the converted pressure value is used as the reference pressure value. Since the amount of the extinguishant storage container is judged to decrease by comparing with the alarm set pressure value at temperature, it is possible to detect the amount of extinguishant storage container by correcting the pressure that increases or decreases due to temperature changes. From the lower limit to the upper limit of the temperature range, and even in one extinguishant storage container,
The leak of the extinguishant storage container can be accurately detected early.
【００１１】[0011]
【発明の実施の形態】以下、本発明の消火剤貯蔵容器の
減量検出装置の実施の形態を図面に基づいて説明する。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a weight loss detecting device for a fire extinguishant storage container according to the present invention will be described below with reference to the drawings.
【００１２】図１〜図４に、本発明の消火剤貯蔵容器の
減量検出装置の第１実施例を示す。この消火剤貯蔵容器
の減量検出装置は、例えば、窒素ガス等のガス系消火剤
を充填した消火剤貯蔵容器の減量を検出するために、例
えば、容器弁１に接続して使用される。そして、この消
火剤貯蔵容器の減量検出装置は、図１〜図３に示すよう
に、消火剤貯蔵容器内の圧力を検出する圧力センサー２
と、消火剤貯蔵容器内の温度を検出する温度センサー３
と、温度に対応する警報設定圧力値を記憶し、前記圧力
センサー２及び温度センサー３の圧力検出値及び温度検
出値に基づいて、該圧力検出値を、該温度検出値に対応
する温度の警報設定圧力値と比較して消火剤貯蔵容器の
減量を判定する圧力判定手段と、該圧力判定手段の判定
結果により警報を発信する警報発信手段と、前記圧力検
出値や温度検出値、換算圧力値、警報等を表示する表示
器４とを一体に備えている。なお、圧力判定手段と警報
発信手段はＣＰＵ等のマイコンからなり、表示器４の内
部に収容されている。このように、一体に形成された消
火剤貯蔵容器の減量検出装置は、図１及び図３に示すよ
うに、取付ねじ部５をねじ込むことにより、消火剤貯蔵
容器の容器弁１にねじ結合により直接接続することがで
きる。1 to 4 show a first embodiment of a weight loss detecting apparatus for a fire extinguishant storage container according to the present invention. This extinguishant storage container weight loss detection device is used, for example, in connection with the container valve 1 to detect the weight loss of the extinguishant storage container filled with a gas-based extinguishant such as nitrogen gas. As shown in FIGS. 1 to 3, the apparatus for detecting the amount of extinguishant storage container has a pressure sensor 2 for detecting the pressure in the extinguishant storage container.
And a temperature sensor 3 for detecting the temperature inside the extinguishant storage container
And an alarm set pressure value corresponding to the temperature are stored, and based on the pressure detection value and the temperature detection value of the pressure sensor 2 and the temperature sensor 3, the pressure detection value is set to an alarm of the temperature corresponding to the temperature detection value. Pressure judging means for judging the reduction of the extinguishant storage container by comparing with the set pressure value, alarm transmitting means for issuing an alarm according to the judgment result of the pressure judging means, the pressure detection value, the temperature detection value, the converted pressure value , An indicator 4 for displaying an alarm, etc. are integrally provided. The pressure determining means and the alarm issuing means are composed of a microcomputer such as a CPU and are housed inside the display 4. As described above, the apparatus for detecting the weight loss of the extinguishant storage container integrally formed by screwing the mounting screw portion 5 into the container valve 1 of the extinguishant storage container as shown in FIGS. Can be directly connected.
【００１３】圧力センサー２や温度センサー３には、例
えば、半導体式のものが使用され、温度センサー３は、
消火剤貯蔵容器の容器弁の温度を計測することにより、
間接的に消火剤貯蔵容器内部の温度を検出する。また、
圧力判定手段は、図５に示すように、温度の上昇にとも
なって上昇する警報設定圧力値Ｌ４を記憶し、前記圧力
センサー２及び温度センサー３の圧力検出値及び温度検
出値に基づいて、この圧力検出値を、計測した温度検出
値に対応する温度の警報設定圧力値と比較し、圧力検出
値が警報設定圧力値と一致するか、警報設定圧力値を下
回った場合に「減量」と判定する。そして、警報発信手
段は、圧力判定手段の判定結果が「減量」である場合
に、音声や光等の何らかの警報を現場や管理室等に発信
する。For the pressure sensor 2 and the temperature sensor 3, for example, semiconductor type ones are used, and the temperature sensor 3 is
By measuring the temperature of the container valve of the extinguishant storage container,
The temperature inside the fire extinguisher storage container is indirectly detected. Also,
As shown in FIG. 5, the pressure determination means stores the alarm set pressure value L4 that rises as the temperature rises, and based on the pressure detection value and the temperature detection value of the pressure sensor 2 and the temperature sensor 3, the pressure setting value L4 is stored. The detected pressure value is compared with the alarm set pressure value of the temperature corresponding to the measured temperature value, and if the detected pressure value matches the alarm set pressure value or falls below the alarm set pressure value, it is judged as "reduction". To do. Then, the alarm transmitting means transmits some alarm such as voice or light to the site, the management room, etc. when the determination result of the pressure determining means is "reduction".
【００１４】表示器４は、常時は温度に対応した換算圧
力値を表示し、前面のスイッチ操作により実際の圧力検
出値や温度検出値を表示することができる。この表示器
４には、異常警報として半導体出力（オープンコレクタ
出力）があり漏洩や機器異常時に出力するようになって
いる。また、この消火剤貯蔵容器の減量検出装置は、電
源を外部より供給し、複数本の消火剤貯蔵容器を同時に
監視する場合は、信号線を含め３線の渡り配線とし、信
号線は断線監視を行うようにする。なお、本実施例で、
警報として半導体出力としているが、接点出力としても
よく、さらには、アドレス式火災感知器のように、圧力
や温度のアナログ情報と位置情報を送出するようにして
もよい。The display 4 always displays the converted pressure value corresponding to the temperature, and the actual pressure detection value and the temperature detection value can be displayed by operating the switch on the front surface. The display 4 has a semiconductor output (open collector output) as an abnormality alarm, which is output when there is a leak or an abnormality in the device. In addition, this fire extinguishant storage container weight loss detection device, when power is supplied from the outside to monitor multiple fire extinguishant storage containers at the same time, uses three crossover wires including the signal line, and the signal line is monitored for disconnection. To do. In this example,
Although the semiconductor output is used as the alarm, it may be a contact output, and further, analog information such as pressure or temperature and position information may be sent out like an address type fire detector.
【００１５】図５に、窒素ガス消火設備の充填圧力の管
理値を、管理上限値Ｌ１と管理下限値Ｌ２の間の範囲に
示す。また、管理下限値Ｌ２の５％減量時の圧力値をＬ
３、温度に対応する警報設定圧力値をＬ４として示す。
なお、窒素ガスは大気圧付近ではボイルシャルルの法則
に従うが、３０ＭＰａあたりでは、圧縮係数の関係によ
り、実測すると図示のような値となり、法則から相当ず
れる。警報設定圧力値Ｐは、消火剤貯蔵容器内温度をＴ
として、例えば、Ｐ＝０．１２８７×Ｔ＋２２．２８４
とすると、図から明らかなように、減量検出装置の性能
によって圧力値で１％、温度にして±５℃の誤差がある
としても、警報は、充填圧力の下限値Ｌ２を６〜７％越
えて下回った範囲で送出することが可能である（ただ
し、温度と圧力とも誤差の最大値となることはないとい
う組み合わせ公差という一般的な考え方を応用する。す
なわち、５℃は約０．７ＭＰａ、１％は０．４ＭＰａと
して、（０．７2＋０．４2）1/2＝０．８ＭＰａとな
る）。すなわち、この減量検出装置は、一般的な精度で
管理された製品でありながら、すべての使用温度範囲で
消火剤の減量が１０％になる前に確実に警報を発するこ
とができるものとなる。FIG. 5 shows the control value of the filling pressure of the nitrogen gas fire extinguishing equipment in the range between the control upper limit value L1 and the control lower limit value L2. In addition, the pressure value when reducing the control lower limit value L2 by 5% is L
3, the alarm set pressure value corresponding to the temperature is shown as L4.
It should be noted that the nitrogen gas follows the Boyle-Charles' law at around atmospheric pressure, but at around 30 MPa, it becomes a value as shown in the figure when actually measured due to the relationship of the compression coefficient, which deviates considerably from the law. The alarm set pressure value P is the temperature inside the extinguishant storage container T
For example, P = 0.1287 × T + 22.284
Then, as is clear from the figure, even if there is an error of 1% in pressure value and ± 5 ° C in temperature due to the performance of the weight loss detection device, the alarm will exceed the lower limit value L2 of the filling pressure by 6 to 7%. It is possible to deliver in a range lower than the above (however, the general idea of combination tolerance that neither the temperature nor the pressure has the maximum error is applied. That is, 5 ° C. is about 0.7 MPa, 1% is 0.4 MPa, which is (0.7 2 +0.4 2 ) 1/2 = 0.8 MPa). That is, this weight loss detection device is a product that is controlled with general accuracy, but can reliably issue an alarm before the weight loss of the extinguishant becomes 10% in all operating temperature ranges.
【００１６】かくして、本第１実施例の消火剤貯蔵容器
の減量検出装置は、計測した圧力検出値及び温度検出値
に基づいて、この圧力検出値を、計測した温度検出値に
対応する温度の警報設定圧力値と比較して消火剤貯蔵容
器の減量を判定することから、温度変化により増減する
圧力を補正して消火剤貯蔵容器の減量を検出することが
でき、これにより、使用温度範囲の下限から上限に亘
り、さらに１本の消火剤貯蔵容器においても、消火剤貯
蔵容器の漏洩を早期に正確に検出して、警報を発するこ
とができる。さらに、この減量検出装置は、ブルドン管
や複雑なリンク機構がないため製造も容易でコンパクト
であり、また、特殊な部品の点数が少なく、量産型演算
器に温度センサー３と演算回路を追加するのみで、大量
生産部品をほぼそのまま使用できるため安価で信頼性が
ある。また、圧力センサー２はダイアフラムを使用する
ことから、消火剤の漏洩のおそれが極めて少なく、耐震
性にも有利である。Thus, the weight loss detecting device for the extinguishant storage container according to the first embodiment, based on the measured pressure detection value and the temperature detection value, detects this pressure detection value as the temperature corresponding to the measured temperature detection value. Since the decrease in the extinguishant storage container is determined by comparing with the alarm set pressure value, the decrease in the extinguishant storage container can be detected by correcting the pressure that increases or decreases due to temperature changes. From the lower limit to the upper limit, and even with one extinguishant storage container, it is possible to accurately and early detect a leak in the extinguishant storage container and issue an alarm. Furthermore, this weight loss detection device is easy to manufacture and compact because it does not have a Bourdon tube or a complicated link mechanism. Moreover, the number of special parts is small, and the temperature sensor 3 and the operation circuit are added to the mass production type operation unit. Only by itself, mass-produced parts can be used almost as they are, so they are cheap and reliable. Further, since the pressure sensor 2 uses a diaphragm, there is very little risk of extinguishing agent being extinguished, and it is also advantageous in terms of earthquake resistance.
【００１７】次に、図１〜図４を参照して、本発明の消
火剤貯蔵容器の減量検出装置の第２実施例を説明する。
この消火剤貯蔵容器の減量検出装置は、消火剤貯蔵容器
内の圧力を検出する圧力センサー２と、消火剤貯蔵容器
内の温度を検出する温度センサー３と、これら圧力セン
サー２及び温度センサー３の圧力検出値及び温度検出値
に基づいて、該圧力検出値を所定の基準温度での換算圧
力値として演算する圧力演算手段と、該換算圧力値を前
記基準温度での警報設定圧力値と比較して消火剤貯蔵容
器の減量を判定する圧力判定手段と、圧力判定手段の判
定結果により警報を発信する警報発信手段と、前記圧力
検出値や温度検出値、換算圧力値、警報等を表示する表
示器４とを一体に備えている。なお、圧力演算手段、圧
力判定手段及び警報発信手段は、ＣＰＵ等のマイコンか
らなり、表示器４の内部に収容されている。このよう
に、一体に形成された消火剤貯蔵容器の減量検出装置
は、図１及び図３に示すように、取付ねじ部５をねじ込
むことにより、消火剤貯蔵容器の容器弁１にねじ結合に
より直接接続することができる。Next, a second embodiment of the extinguishant storage container weight loss detecting apparatus of the present invention will be described with reference to FIGS.
This extinguishant storage container weight loss detection device includes a pressure sensor 2 for detecting the pressure in the extinguishant storage container, a temperature sensor 3 for detecting the temperature in the extinguishant storage container, and a pressure sensor 2 and a temperature sensor 3 for detecting the temperature in the extinguishant storage container. Based on the detected pressure value and the detected temperature value, a pressure calculation means for calculating the detected pressure value as a converted pressure value at a predetermined reference temperature, and the converted pressure value is compared with an alarm set pressure value at the reference temperature. Pressure judging means for judging the reduction of the extinguishant storage container, alarm transmitting means for issuing an alarm according to the judgment result of the pressure judging means, and a display for displaying the pressure detection value, the temperature detection value, the converted pressure value, the alarm, etc. It is equipped with a container 4. The pressure calculation means, the pressure determination means, and the alarm transmission means are composed of a microcomputer such as a CPU, and are housed inside the display 4. As described above, the apparatus for detecting the weight loss of the extinguishant storage container integrally formed by screwing the mounting screw portion 5 into the container valve 1 of the extinguishant storage container as shown in FIGS. Can be directly connected.
【００１８】圧力センサー２や温度センサー３には、例
えば、半導体式のものが使用され、温度センサー３は、
消火剤貯蔵容器の温度を計測することにより間接的に消
火剤貯蔵容器内部の温度を検出する。また、圧力演算手
段は、消火剤貯蔵容器の温度検出値に基づいて、実際の
圧力検出値を、例えば、２０℃等の所定の基準温度での
圧力値に換算して演算する。圧力判定手段は、圧力演算
手段の換算圧力値を、予め設定した前記基準温度での警
報設定圧力値と比較し、換算圧力値が警報設定圧力値と
なるか、これを下回った場合に「減量」と判定する。そ
して、警報発信手段は、圧力判定手段の判定結果が「減
量」である場合に、音声や光等の何らかの警報を現場や
管理室等に発信する。For the pressure sensor 2 and the temperature sensor 3, for example, semiconductor type ones are used, and the temperature sensor 3 is
The temperature inside the extinguishant storage container is indirectly detected by measuring the temperature inside the extinguishant storage container. Further, the pressure calculation means converts the actual detected pressure value into a pressure value at a predetermined reference temperature such as 20 ° C., for example, based on the detected temperature value of the extinguishant storage container. The pressure determination means compares the converted pressure value of the pressure calculation means with the alarm set pressure value at the preset reference temperature, and when the converted pressure value becomes the alarm set pressure value or falls below this, Is determined. Then, the alarm transmitting means transmits some alarm such as voice or light to the site, the management room, etc. when the determination result of the pressure determining means is "reduction".
【００１９】表示器４は、常時は温度に対応した換算圧
力値を表示し、前面のスイッチ操作により実際の圧力検
出値や温度検出値を表示することができる。この表示器
４には、異常警報として半導体出力（オープンコレクタ
出力）があり漏洩や機器異常時に出力するようになって
いる。The display 4 always displays the converted pressure value corresponding to the temperature, and the actual pressure detection value and the temperature detection value can be displayed by operating the switch on the front surface. The display 4 has a semiconductor output (open collector output) as an abnormality alarm, which is output when there is a leak or an abnormality in the device.
【００２０】かくして、本第２実施例の消火剤貯蔵容器
の減量検出装置は、実際の圧力検出値及び温度検出値に
基づいて、この圧力検出値を基準温度での換算圧力値と
して演算し、この換算圧力値を警報設定圧力値と比較し
て消火剤貯蔵容器の減量を判定することから、温度変化
により増減する圧力を補正して消火剤貯蔵容器の減量を
検出することができ、これにより、使用温度範囲の下限
から上限に亘り、さらに１本の消火剤貯蔵容器において
も、消火剤貯蔵容器の漏洩を早期に正確に検出して、警
報を発することができる。さらに、この減量検出装置
は、ブルドン管や複雑なリンク機構がないため製造も容
易でコンパクトであり、また、特殊な部品の点数が少な
く、量産型演算器に温度センサー３と演算回路を追加す
るのみで、大量生産部品をほぼそのまま使用できるため
安価で信頼性がある。また、圧力センサー２はダイアフ
ラムを使用することから、消火剤の漏洩のおそれが極め
て少なく、耐震性にも有利である。Thus, the apparatus for detecting a decrease in the extinguishant storage container according to the second embodiment calculates the detected pressure value as the converted pressure value at the reference temperature based on the actual detected pressure value and the detected temperature value, Since the reduced pressure of the extinguishant storage container is determined by comparing this converted pressure value with the alarm set pressure value, it is possible to correct the pressure that increases or decreases due to temperature changes and detect the reduction of the extinguishant storage container. The range from the lower limit to the upper limit of the operating temperature range, and even in the case of one extinguishant storage container, it is possible to accurately and early detect the leakage of the extinguishant storage container and issue an alarm. Furthermore, this weight loss detection device is easy to manufacture and compact because it does not have a Bourdon tube or a complicated link mechanism. Moreover, the number of special parts is small, and the temperature sensor 3 and the operation circuit are added to the mass production type operation unit. Only by itself, mass-produced parts can be used almost as they are, so they are cheap and reliable. Further, since the pressure sensor 2 uses a diaphragm, there is very little risk of extinguishing agent being extinguished, and it is also advantageous in terms of earthquake resistance.
【００２１】[0021]
【発明の効果】本第１発明の消火剤貯蔵容器の減量検出
装置によれば、計測した圧力検出値及び温度検出値に基
づいて、この圧力検出値を、計測した温度検出値に対応
する温度の警報設定圧力値と比較して消火剤貯蔵容器の
減量を判定することから、温度変化により増減する圧力
を補正して消火剤貯蔵容器の減量を検出することがで
き、これにより、使用温度範囲の下限から上限に亘り、
さらに１本の消火剤貯蔵容器においても、消火剤貯蔵容
器の漏洩を早期に正確に検出することができる。According to the weight loss detecting device for the extinguishant storage container of the first aspect of the present invention, based on the measured pressure detection value and the temperature detection value, the pressure detection value is changed to the temperature corresponding to the measured temperature detection value. Since the decrease in the extinguishant storage container is determined by comparing with the alarm set pressure value of, the decrease in the extinguishant storage container can be detected by compensating the pressure that increases or decreases due to temperature changes. From the lower limit to the upper limit of
Further, even in one extinguishant storage container, it is possible to accurately detect the leakage of the extinguishant storage container at an early stage.
【００２２】また、本第２発明の消火剤貯蔵容器の減量
検出装置によれば、実際の圧力検出値及び温度検出値に
基づいて、この圧力検出値を基準温度での換算圧力値と
して演算し、この換算圧力値をこの基準温度での警報設
定圧力値と比較して消火剤貯蔵容器の減量を判定するこ
とから、温度変化により増減する圧力を補正して消火剤
貯蔵容器の減量を検出することができ、これにより、使
用温度範囲の下限から上限に亘り、さらに１本の消火剤
貯蔵容器においても、消火剤貯蔵容器の漏洩を早期に正
確に検出することができる。Further, according to the apparatus for detecting a decrease in the extinguishant storage container according to the second aspect of the present invention, the detected pressure value is calculated as the converted pressure value at the reference temperature based on the actual detected pressure value and the detected temperature value. , The reduced pressure of the extinguishant storage container is determined by comparing this converted pressure value with the alarm set pressure value at this reference temperature, so the pressure increase / decrease due to temperature change is corrected to detect the reduction of the extinguishant storage container. This makes it possible to accurately detect the leakage of the extinguishant storage container at an early stage over the lower limit to the upper limit of the operating temperature range, and even for one extinguishant storage container.
【図１】本発明の消火剤貯蔵容器の減量検出装置の第
１、第２各実施例を消火剤貯蔵容器の容器弁に取り付け
た状態を示す水平断面平面図である。FIG. 1 is a horizontal cross-sectional plan view showing a state in which the first and second embodiments of the weight loss detecting device for a fire extinguisher storage container of the present invention are attached to a container valve of the fire extinguisher storage container.
【図２】同実施例を示し、（ａ）は正面図、（ｂ）は平
面図、（ｃ）は底面図、（ｄ）は右側面図、（ｅ）は背
面図である。FIG. 2 shows the same embodiment, (a) is a front view, (b) is a plan view, (c) is a bottom view, (d) is a right side view, and (e) is a rear view.
【図３】同実施例の消火剤貯蔵容器の減量検出装置を消
火剤貯蔵容器の容器弁に取り付けた状態を示し、（ａ）
は正面図、（ｂ）は平面図、（ｃ）は右側面図、（ｄ）
は平面図、（ｅ）は（ａ）の縦断面図である。FIG. 3 shows a state in which the weight loss detection device for an extinguishant storage container of the same embodiment is attached to a container valve of the extinguishant storage container;
Is a front view, (b) is a plan view, (c) is a right side view, (d)
Is a plan view and (e) is a vertical sectional view of (a).
【図４】同実施例の消火剤貯蔵容器の減量検出装置の回
路図である。FIG. 4 is a circuit diagram of a weight loss detection device for an extinguishant storage container according to the same embodiment.
【図５】消火剤貯蔵容器の充填圧力の管理値と減量時の
圧力値を示すグラフである。FIG. 5 is a graph showing the control value of the filling pressure of the extinguishant storage container and the pressure value when the amount is reduced.
１ 容器弁 ２ 圧力センサー ３ 温度センサー ４ 表示器 ５ 取付ねじ部 1 container valve 2 Pressure sensor 3 temperature sensor 4 display 5 Mounting thread
───────────────────────────────────────────────────── フロントページの続き (72)発明者 石川 安 東京都大田区東馬込１丁目30番４号 長野 計器株式会社内 Ｆターム(参考） 2E189 HA09 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Yasushi Ishikawa Nagano, 1-30-4 Higashimagome, Ota-ku, Tokyo Keiki Co., Ltd. F-term (reference) 2E189 HA09
Claims (2)
の減量を検出する消火剤貯蔵容器の減量検出装置におい
て、消火剤貯蔵容器内の圧力を検出する圧力センサー
と、消火剤貯蔵容器内の温度を検出する温度センサー
と、温度に対応する警報設定圧力値を記憶し、前記圧力
センサー及び温度センサーの圧力検出値及び温度検出値
に基づいて、該圧力検出値を、該温度検出値に対応する
温度の警報設定圧力値と比較して消火剤貯蔵容器の減量
を判定する圧力判定手段とを備えたことを特徴とする消
火剤貯蔵容器の減量検出装置。1. An extinguishant storage container weight loss detection device for detecting a weight loss of a fire extinguisher storage container filled with a gas-based extinguishant, and a pressure sensor for detecting a pressure in the extinguishant storage container, and A temperature sensor for detecting the temperature of the temperature sensor, and an alarm set pressure value corresponding to the temperature is stored, and based on the pressure detection value and the temperature detection value of the pressure sensor and the temperature sensor, the pressure detection value is set to the temperature detection value. An extinguishant storage container weight loss detection device, comprising: pressure determination means for determining a weight loss of the extinguishant storage container by comparing with an alarm set pressure value of a corresponding temperature.
の減量を検出する消火剤貯蔵容器の減量検出装置におい
て、消火剤貯蔵容器内の圧力を検出する圧力センサー
と、消火剤貯蔵容器内の温度を検出する温度センサー
と、これら圧力センサー及び温度センサーの圧力検出値
及び温度検出値に基づいて、該圧力検出値を所定の基準
温度での換算圧力値として演算する圧力演算手段と、該
換算圧力値をこの基準温度での警報設定圧力値と比較し
て消火剤貯蔵容器の減量を判定する圧力判定手段とを備
えたことを特徴とする消火剤貯蔵容器の減量検出装置。2. An extinguishant storage container weight loss detecting device for detecting a weight loss of a fire extinguishant storage container filled with a gas-based extinguishant, and a pressure sensor for detecting a pressure in the extinguishant storage container, A temperature sensor for detecting the temperature of the pressure sensor, a pressure calculation means for calculating the pressure detection value as a converted pressure value at a predetermined reference temperature based on the pressure detection value and the temperature detection value of the pressure sensor and the temperature sensor, An extinguishant storage container weight loss detection device comprising: a pressure determination means for comparing the converted pressure value with an alarm set pressure value at the reference temperature to determine the weight loss of the extinguishant storage container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283321A JP2003088596A (en) | 2001-09-18 | 2001-09-18 | Weight loss detector for fire-extinguisher storage cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001283321A JP2003088596A (en) | 2001-09-18 | 2001-09-18 | Weight loss detector for fire-extinguisher storage cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003088596A true JP2003088596A (en) | 2003-03-25 |
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| JP2001283321A Pending JP2003088596A (en) | 2001-09-18 | 2001-09-18 | Weight loss detector for fire-extinguisher storage cylinder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101041581B1 (en) * | 2009-08-07 | 2011-06-15 | 김대의 | Leakage detector of liquid for fire-fighting |
| CN103759893A (en) * | 2014-01-03 | 2014-04-30 | 重庆和航科技股份有限公司 | Method and device for monitoring leakage of fire extinguishing agent of gas fire-extinguishing system and remote monitoring system |
| EP2759823A3 (en) * | 2013-01-25 | 2017-06-28 | Siemens Schweiz AG | Pressurised gas container |
| KR101796118B1 (en) * | 2017-02-17 | 2017-11-10 | 주식회사 파라텍 | System and method for monitoring the gas leakage of fire extinguisher |
| JP2018504953A (en) * | 2014-12-19 | 2018-02-22 | ミニマックス ゲーエムベーハー ウント コンパニー カーゲー | Fire extinguishing device valve and fire extinguishing device equipped with a fire extinguishing device valve |
| CN109520559A (en) * | 2018-09-30 | 2019-03-26 | 西安工程大学 | A kind of real-time monitoring device of cylinder gas pressure and temperature |
| KR102300353B1 (en) * | 2021-01-18 | 2021-09-10 | 주식회사 지에스하이텍 | Railroad Vehicle Cylinder Type Fire Suppression Device |
| KR20210131722A (en) * | 2020-04-24 | 2021-11-03 | 주식회사 파라텍 | Monitoring System and Method of Gas Type Fire Extinguisher |
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| JPH0769084A (en) * | 1993-08-31 | 1995-03-14 | Toyota Autom Loom Works Ltd | Lpg residual quantity warning device |
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| JPS60183536A (en) * | 1984-03-02 | 1985-09-19 | Nippon Doraikemikaru Kk | Monitoring device for pressure gas leak |
| JPS62141745U (en) * | 1986-03-03 | 1987-09-07 | ||
| JPH0769084A (en) * | 1993-08-31 | 1995-03-14 | Toyota Autom Loom Works Ltd | Lpg residual quantity warning device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101041581B1 (en) * | 2009-08-07 | 2011-06-15 | 김대의 | Leakage detector of liquid for fire-fighting |
| EP2759823A3 (en) * | 2013-01-25 | 2017-06-28 | Siemens Schweiz AG | Pressurised gas container |
| CN103759893A (en) * | 2014-01-03 | 2014-04-30 | 重庆和航科技股份有限公司 | Method and device for monitoring leakage of fire extinguishing agent of gas fire-extinguishing system and remote monitoring system |
| JP2018504953A (en) * | 2014-12-19 | 2018-02-22 | ミニマックス ゲーエムベーハー ウント コンパニー カーゲー | Fire extinguishing device valve and fire extinguishing device equipped with a fire extinguishing device valve |
| US10765899B2 (en) | 2014-12-19 | 2020-09-08 | Minimax Gmbh & Co. Kg | Alarm valve station of a fire extinguishing system, in particular a sprinkler or spray water extinguishing system, and fire extinguishing system |
| US10773113B2 (en) | 2014-12-19 | 2020-09-15 | Minimax Gmbh & Co. Kg | Fire extinguishing system valve and fire extinguishing system having such a valve |
| KR101796118B1 (en) * | 2017-02-17 | 2017-11-10 | 주식회사 파라텍 | System and method for monitoring the gas leakage of fire extinguisher |
| WO2018151500A1 (en) * | 2017-02-17 | 2018-08-23 | 주식회사 파라텍 | System and method for monitoring whether fire extinguishing agent in fire extinguishing agent container is leaking |
| CN109520559A (en) * | 2018-09-30 | 2019-03-26 | 西安工程大学 | A kind of real-time monitoring device of cylinder gas pressure and temperature |
| KR20210131722A (en) * | 2020-04-24 | 2021-11-03 | 주식회사 파라텍 | Monitoring System and Method of Gas Type Fire Extinguisher |
| KR102440902B1 (en) * | 2020-04-24 | 2022-09-06 | 주식회사 파라텍 | Monitoring System and Method of Gas Type Fire Extinguisher |
| KR102300353B1 (en) * | 2021-01-18 | 2021-09-10 | 주식회사 지에스하이텍 | Railroad Vehicle Cylinder Type Fire Suppression Device |
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