JPH0589908A - Fire extinguishing appliance for sodium-sulfur cell - Google Patents
Fire extinguishing appliance for sodium-sulfur cellInfo
- Publication number
- JPH0589908A JPH0589908A JP3249528A JP24952891A JPH0589908A JP H0589908 A JPH0589908 A JP H0589908A JP 3249528 A JP3249528 A JP 3249528A JP 24952891 A JP24952891 A JP 24952891A JP H0589908 A JPH0589908 A JP H0589908A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- pressure
- nitrogen
- storage tank
- inert gas
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ナトリウム−硫黄電池
により構成された集合電池における消火装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguisher in an assembled battery constituted by a sodium-sulfur battery.
【０００２】[0002]
【従来の技術】一般に、ナトリウム−硫黄電池の事故火
災を消火するためには、粉末又は粒状の消火剤を窒素な
どの不活性ガスの流れにのせて電池の収納ケース内に投
入することにより行われる。この場合、消火剤及び不活
性ガスは前記収納ケース内の壁部に設けたノズルから収
納ケース内に噴射される。そして、収納ケース内におい
て不活性ガス及び消火剤の流速が低下することにより、
消火剤が収納ケース内に沈下残留して消火が行われる。
収納ケース内の不活性ガスは収納ケースの壁部の排出口
から収納ケース外に排出される。2. Description of the Related Art Generally, in order to extinguish an accidental fire of a sodium-sulfur battery, a powder or granular extinguishing agent is put on a flow of an inert gas such as nitrogen and put into a storage case of the battery. Be seen. In this case, the fire extinguishing agent and the inert gas are sprayed into the storage case from the nozzle provided on the wall portion of the storage case. Then, the flow velocity of the inert gas and the fire extinguishing agent decreases in the storage case,
The fire extinguishing agent is extinguished by remaining in the storage case.
The inert gas in the storage case is discharged to the outside of the storage case from the outlet of the wall of the storage case.
【０００３】そして、収納ケース内の事故火災の際に
は、火災発生と同時に消火剤を不活性ガス流にのせて速
やかに収納ケース内へ投入できるようにすることが望ま
しい。In the event of an accidental fire in the storage case, it is desirable that the fire extinguishing agent be placed on the inert gas flow and quickly introduced into the storage case at the same time when the fire occurs.
【０００４】[0004]
【発明が解決しようとする課題】このためには、貯蔵タ
ンク内の不活性ガスの圧力を常時高い状態にしておくこ
とが望ましい。ところが、前記貯蔵タンク内の不活性ガ
スの圧力を常時加圧状態にすると、貯蔵タンクと前記収
納ケースとを連結する配管に設けられている弁や、消火
剤を貯蔵タンク内に投入するためにタンク上部に設けら
れている投入口や、安全弁等から不活性ガスがわずかず
つ漏洩する。特に、前記弁や消火剤投入口のフランジは
粒状の消火剤が出入りするので、この粒状の消火剤が弁
の弁座や消火剤投入口周囲のフランジ部にかみ込まれそ
れらの部分から不活性ガスが漏洩しやすく、この漏洩を
皆無にすることは困難である。To this end, it is desirable to keep the pressure of the inert gas in the storage tank high at all times. However, when the pressure of the inert gas in the storage tank is constantly set to a pressurized state, a valve provided in a pipe connecting the storage tank and the storage case, or a fire extinguishing agent is introduced into the storage tank. Inert gas leaks little by little from the inlet provided at the top of the tank and the safety valve. In particular, since the granular extinguishant goes in and out of the flange of the valve and the extinguishant inlet, this granular extinguishant is caught in the valve seat of the valve and the flange around the extinguishant inlet and inert from those parts. Gas leaks easily and it is difficult to eliminate this leak altogether.
【０００５】そのため、前記貯蔵タンク内にガス圧を付
与するとともに、消火剤をのせるガス流をつくるための
加圧ボンベ内の不活性ガスが漏洩補充のために消費され
て次第にボンベ内のガス容量が低下する。このような状
態になると、収納ケース内で火災が起きたときに消火剤
を搬送するための不活性ガス量が不足して消火に支障を
きたすという問題があった。Therefore, the inert gas in the pressurized cylinder for applying the gas pressure in the storage tank and for creating the gas flow on which the extinguishant is placed is consumed for leak replenishment, and the gas in the cylinder is gradually consumed. The capacity decreases. In such a state, there is a problem that when a fire occurs in the storage case, the amount of the inert gas for carrying the extinguishing agent is insufficient to hinder the fire extinguishing.
【０００６】本発明は上記問題を解消するためになされ
たものであって、その目的は消火剤を収容する貯蔵タン
ク内の不活性ガスの圧力を常時確保でき、ナトリウム−
硫黄電池の収納ケース内の火災に対して迅速に対処でき
るナトリウム−硫黄電池における消火装置を提供するこ
とにある。The present invention has been made to solve the above problems, and its purpose is to always ensure the pressure of an inert gas in a storage tank containing a fire extinguishing agent, and
It is an object of the present invention to provide a fire extinguisher for a sodium-sulfur battery, which can quickly cope with a fire in the storage case of the sulfur battery.
【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
に、本発明ではナトリウム−硫黄電池により構成された
集合電池を収納した収納ケースと、粉末又は粒状の消火
剤が貯蔵された貯蔵タンクと、前記収納ケースと貯蔵タ
ンクとを連結する連結配管と、その連結配管中に設けら
れた弁と、前記貯蔵タンク内へ不活性ガスを供給するガ
ス供給装置と、前記弁の開放により消火剤を不活性ガス
流にのせて収納ケース内に投入するように構成した消火
装置において、前記貯蔵タンクの内部に不活性ガスを圧
入して同タンク内を加圧する不活性ガス発生装置と、貯
蔵タンク内の圧力が一定に保持されるように前記不活性
ガス発生装置の作動を制御する制御装置とを設けたナト
リウム−硫黄電池における消火装置をその要旨としてい
る。。In order to achieve the above object, according to the present invention, there is provided a storage case for accommodating an assembled battery composed of a sodium-sulfur battery, and a storage tank for storing a powder or granular extinguishing agent. , A connection pipe connecting the storage case and the storage tank, a valve provided in the connection pipe, a gas supply device for supplying an inert gas into the storage tank, and a fire extinguishing agent by opening the valve. In a fire extinguisher configured to be placed in a storage case by placing it on an inert gas flow, an inert gas generator for pressurizing the inside of the storage tank by pressurizing the interior of the storage tank, and the inside of the storage tank The gist is a fire-extinguishing device in a sodium-sulfur battery provided with a control device for controlling the operation of the inert gas generator so that the pressure is maintained constant. ..
【０００８】また、本発明では前記不活性ガス発生装置
は不活性ガス分離膜を用いて大気から窒素ガスを分離濃
縮し、同ガスを加圧して貯蔵タンク内に供給するナトリ
ウム−硫黄電池における消火装置をその要旨としてい
る。Further, in the present invention, the inert gas generator uses the inert gas separation membrane to separate and concentrate nitrogen gas from the atmosphere, pressurize the gas, and supply the gas into the storage tank for extinguishing fire in a sodium-sulfur battery. The gist is the device.
【０００９】[0009]
【作用】貯蔵タンクには前記ガス供給装置とは別に、不
活性ガス発生装置が設けられている。従って、貯蔵タン
ク内の不活性ガスの圧力が低下してもこの不活性ガス発
生装置及び制御装置の作用により不活性ガスが貯蔵タン
ク内に供給されて、タンク内ガス圧は一定に保持され
る。このため、収納ケース内の事故火災時には火災発生
と同時に消火剤が不活性ガスにのせられて収納ケース内
に速やかに投入され、収納ケース内の火災は消火され
る。In addition to the gas supply device, an inert gas generator is provided in the storage tank. Therefore, even if the pressure of the inert gas in the storage tank drops, the inert gas is supplied into the storage tank by the action of the inert gas generator and the control device, and the tank gas pressure is kept constant. .. Therefore, in the event of an accidental fire in the storage case, the fire extinguishing agent is immediately put into the storage case by placing the fire extinguishing agent on the inert gas as soon as the fire occurs, and the fire in the storage case is extinguished.
【００１０】また、不活性ガス発生装置は、分離膜の作
用により大気中から窒素を取り込むため、この発生装置
のための不活性ガスボンベは不要である。Further, since the inert gas generator takes in nitrogen from the atmosphere by the action of the separation membrane, an inert gas cylinder for this generator is unnecessary.
【００１１】[0011]
【実施例】以下に本発明を具体化した一実施例について
図１〜３に従って説明する。図１に示すように、四角箱
状をなす収納ケース１内にはナトリウム−硫黄電池の単
電池を多数組み込んだ複数の集合電池２が収納され、こ
の収納ケース１が複数並べて設置されている。前記集合
電池２の内部は図示しないが、単体のナトリウム−硫黄
電池が単体で、もしくは上下方向に積層されて直列接続
された状態で設けられている。そして、単体のナトリウ
ム−硫黄電池は固体電解質管を介して金属ナトリウムと
硫黄とが区分して収納されている。さらに、前記収納ケ
ース１の内部は約３００℃に常時加熱され、電池内の金
属ナトリウム及び硫黄を溶融状態にしている。An embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a plurality of assembled batteries 2 incorporating a large number of single cells of sodium-sulfur batteries are housed in a housing case 1 having a rectangular box shape, and a plurality of the housing cases 1 are installed side by side. Although not shown, the inside of the assembled battery 2 is provided as a single sodium-sulfur battery alone or in a state of being vertically stacked and connected in series. In the single sodium-sulfur battery, metallic sodium and sulfur are separately stored via the solid electrolyte tube. Further, the inside of the storage case 1 is constantly heated to about 300 ° C. to keep metallic sodium and sulfur in the battery in a molten state.
【００１２】前記収納ケース１内上部には温度センサな
どの火災検出装置３が取付けられている。収納ケース１
内上部には排気管１ａが取付けられ収納ケース１内のガ
スを排気するようになっている。なお、排気管１ａは平
常時には閉塞される。A fire detection device 3 such as a temperature sensor is attached to the upper part of the storage case 1. Storage case 1
An exhaust pipe 1a is attached to the inner upper part of the storage case 1 to exhaust gas. The exhaust pipe 1a is normally closed.
【００１３】こられの収納ケース１には、粒状の消火剤
４が充填されるとともに、不活性ガスとしての窒素ガス
が充満された貯蔵タンク５が連結配管６を介して接続さ
れている。前記消火剤４は電池の活物質及び火災発生時
の生成物と非反応性を有し、吸湿性がなく絶縁性を有す
るものが使用される。具体的には、消火剤４は粒子径0.
2 〜2.0mm のセラミック粒子や砂の単独又は混合物で形
成されている。The storage case 1 is filled with a granular fire extinguishing agent 4, and a storage tank 5 filled with nitrogen gas as an inert gas is connected through a connecting pipe 6. The fire extinguishing agent 4 has a non-reactive property with the active material of the battery and a product at the time of fire occurrence, and has no hygroscopic property and has an insulating property. Specifically, the extinguishing agent 4 has a particle size of 0.
It is composed of ceramic particles of 2 to 2.0 mm or sand or a mixture thereof.
【００１４】前記セラミックとしては、長石質普通磁
器、アルミナ含有磁器、クリストバライト磁器等が使用
される。前記連結配管６には貯蔵タンク５内の消火剤４
を収納ケース１側への通過を許容するための常閉の導入
弁７が設けられるとともに、連結配管６の各収納ケース
１に接続される部分は分岐管６ａに分岐され、これら分
岐管６ａには火災が発生した収納ケース１側への消火剤
４の通過を許容するための常閉の選択弁８がそれぞれ設
けられている。As the ceramic, feldspar porcelain, alumina-containing porcelain, cristobalite porcelain, etc. are used. Extinguishing agent 4 in the storage tank 5 is connected to the connecting pipe 6.
Is provided with a normally closed introduction valve 7 for allowing passage to the storage case 1 side, and a portion of the connecting pipe 6 connected to each storage case 1 is branched into branch pipes 6a. Are each provided with a normally closed selection valve 8 for allowing the extinguishing agent 4 to pass to the side of the storage case 1 where a fire has occurred.
【００１５】前記貯蔵タンク５には不活性ガスとしての
窒素を加圧収納する加圧ボンベ１６が窒素配管１７によ
って接続されている。この窒素配管１７は途中で分岐さ
れ、その分岐配管１８は貯蔵タンク５の出口配管１０を
介して前記連結配管６に接続されている。この窒素配管
１７には常閉の貯蔵タンク加圧弁２０が取付けられ、分
岐配管１８には常閉の搬送弁２１が接続されている。A pressure cylinder 16 for pressurizing and storing nitrogen as an inert gas is connected to the storage tank 5 by a nitrogen pipe 17. The nitrogen pipe 17 is branched on the way, and the branched pipe 18 is connected to the connecting pipe 6 through the outlet pipe 10 of the storage tank 5. A normally closed storage tank pressurizing valve 20 is attached to the nitrogen pipe 17, and a normally closed transfer valve 21 is connected to the branch pipe 18.
【００１６】前記窒素の加圧ボンベ１６、窒素配管１
７、貯蔵タンク加圧弁２０等によりガス供給装置が構成
されている。なお、前記前記導入弁７、選択弁８、貯蔵
タンク加圧弁２０、搬送弁２１はいずれも電磁弁、電動
弁もしくは空気圧駆動等による自動弁である。そして、
前記火災検出装置３の検出信号に基づいて前記貯蔵タン
ク加圧弁２０、搬送弁２１が開放されるとともに、導入
弁７、選択弁８が開放されるようになっている。The nitrogen pressure cylinder 16 and the nitrogen pipe 1
7, the storage tank pressurizing valve 20 and the like constitute a gas supply device. The introduction valve 7, the selection valve 8, the storage tank pressurizing valve 20, and the transfer valve 21 are all solenoid valves, electric valves, or automatic valves driven by air pressure. And
Based on the detection signal of the fire detection device 3, the storage tank pressurization valve 20 and the transfer valve 21 are opened, and the introduction valve 7 and the selection valve 8 are opened.
【００１７】前記貯蔵タンク５の上部には窒素発生器３
１と真空ポンプ４１とコンプレッサー３２とからなる不
活性ガス発生装置が逆止弁３３を介して接続されてい
る。同じく貯蔵タンク５の上部には消火剤投入用の孔が
設けられ、その孔の周縁には蓋取付用のフランジ９が形
成されるとともに、その隣接位置には圧力センサ３４及
び安全弁１５が取付けられている。A nitrogen generator 3 is provided above the storage tank 5.
An inert gas generating device composed of 1, a vacuum pump 41 and a compressor 32 is connected via a check valve 33. Similarly, a hole for introducing a fire extinguishing agent is provided in the upper part of the storage tank 5, a flange 9 for attaching a lid is formed on the periphery of the hole, and a pressure sensor 34 and a safety valve 15 are attached to the adjacent position. ing.
【００１８】ここで、前記窒素発生器３１について説明
する。図２は窒素発生器３１を模式的に示す説明図であ
って、同図に示すように、窒素発生器３１の内部は、多
孔質支持板４２に支持されたガス分離膜４３によって酸
素富化室４５と窒素富化室４４に区画形成されている。
この分離膜４３はシリコーン系樹脂により形成された厚
さ0.1 μｍ以下の膜であるが、その他の樹脂、ゴム製で
あってもよい。この膜はその分離係数及び酸素透過係数
が大きいほど不活性ガスの分離能力が大きいので好まし
い。Now, the nitrogen generator 31 will be described. FIG. 2 is an explanatory view schematically showing the nitrogen generator 31, and as shown in the figure, the inside of the nitrogen generator 31 is enriched with oxygen by the gas separation membrane 43 supported by the porous support plate 42. It is partitioned into a chamber 45 and a nitrogen enrichment chamber 44.
The separation film 43 is a film made of silicone resin and having a thickness of 0.1 μm or less, but may be made of other resin or rubber. The larger the separation coefficient and the oxygen permeability coefficient of this membrane, the larger the ability of separating the inert gas, which is preferable.
【００１９】前記窒素富化室４４は実際には蛇行する一
本の溝状になっており、その一端には大気からの入口配
管４６が接続され、他端はコンプレッサ３２への給気配
管４７が接続されている。酸素富化室４５には真空ポン
プ４１の吸引配管４８が接続されている。真空ポンプ４
１を起動すると酸素富化室４５は窒素富化室４４より低
圧となり、窒素富化室４４内の空気は分離膜４３に溶
解、拡散し、酸素富化室４５側の表面で離脱して空気の
移動が行われるが、溶解、離脱する割合が各ガスによっ
て異なり、空気中に一般に含まれるものとしては、窒
素、酸素、アルゴン、炭酸ガス、水蒸気の順に高くな
り、酸素は空気に対して２〜３倍大きい。The nitrogen enrichment chamber 44 is actually in the form of a meandering groove, one end of which is connected to an inlet pipe 46 from the atmosphere, and the other end of which is an air supply pipe 47 to the compressor 32. Are connected. A suction pipe 48 of the vacuum pump 41 is connected to the oxygen enrichment chamber 45. Vacuum pump 4
When 1 is activated, the oxygen enrichment chamber 45 has a lower pressure than the nitrogen enrichment chamber 44, the air in the nitrogen enrichment chamber 44 is dissolved and diffused in the separation membrane 43, and is separated on the surface on the oxygen enrichment chamber 45 side to release the air. However, the rate of dissolution and desorption varies depending on the gas. Generally, air contains nitrogen, oxygen, argon, carbon dioxide, and water vapor in that order. ~ 3 times larger.
【００２０】このため、酸素富化室４５へは一般の空気
成分比よりもはるかに高い酸素比の空気が移動し、一方
窒素富化室４４には窒素比の高い空気が残される。この
窒素成分は蛇行する溝を長くしたり、この装置を２段、
３段に重ねることにより、９０〜９５％濃度まで高める
ことができる。窒素が富化された空気は給気配管４７を
通してコンプレッサ３２にて加圧され、窒素取得配管４
９を介して貯蔵タンク５に供給される。As a result, air having a much higher oxygen ratio than the general air component ratio moves to the oxygen enrichment chamber 45, while air having a high nitrogen ratio remains in the nitrogen enrichment chamber 44. This nitrogen component lengthens the meandering groove,
By stacking in three stages, the concentration can be increased to 90 to 95%. The air enriched with nitrogen is pressurized by the compressor 32 through the air supply pipe 47, and the nitrogen acquisition pipe 4
It is supplied to the storage tank 5 via 9.
【００２１】なお、ここでコンプレッサ３２の吸い込み
量が真空ポンプ４１の排気量とのバランスがとれていな
いと、窒素成分が富化されないうちに空気が窒素富化室
４４を通過するので注意を要する。It should be noted that if the suction amount of the compressor 32 is not balanced with the exhaust amount of the vacuum pump 41, air will pass through the nitrogen enrichment chamber 44 before the nitrogen component is enriched. ..
【００２２】次に、前記不活性ガス加圧供給装置を作動
制御する構成について説明する。図３に示すように、制
御装置６０には前記圧力センサ３４が接続され、貯蔵タ
ンク５内の窒素ガスの圧力に関する信号が入力されるよ
うになっている。また、制御装置６０には真空ポンプ４
１とコンプレッサ３２とが接続され、これらを作動又は
停止させる信号が出力されるようになっている。Next, the construction for controlling the operation of the inert gas pressure supply device will be described. As shown in FIG. 3, the pressure sensor 34 is connected to the control device 60 so that a signal relating to the pressure of the nitrogen gas in the storage tank 5 is input. Further, the control device 60 includes a vacuum pump 4
1 and the compressor 32 are connected and a signal for operating or stopping them is output.
【００２３】そして、貯蔵タンク５内の窒素ガスの圧力
が所定値まで低下したとき、圧力センサ３４から制御装
置６０に信号が入力され、制御装置６０は真空ポンプ４
１及びコンプレッサ３２を作動させるようになってい
る。また、貯蔵タンク５内の窒素ガスの圧力が一定の上
限値まで達したときには、圧力センサ３４からの信号が
制御装置６０に入力され、制御装置６０が真空ポンプ４
１及びコンプレッサ３２の作動を停止させるようになっ
ている。When the pressure of the nitrogen gas in the storage tank 5 drops to a predetermined value, a signal is input from the pressure sensor 34 to the control device 60, and the control device 60 causes the vacuum pump 4 to operate.
1 and the compressor 32 are operated. Further, when the pressure of the nitrogen gas in the storage tank 5 reaches a certain upper limit value, a signal from the pressure sensor 34 is input to the control device 60, and the control device 60 causes the vacuum pump 4 to operate.
1 and the operation of the compressor 32 are stopped.
【００２４】次に、このような消火装置について作用を
説明する。貯蔵タンク５内の窒素ガスの圧力が前記導入
弁７、フランジ９等における漏洩によって経時的に所定
値まで低下すると、圧力センサ３４から制御装置６０に
信号が入力される。制御装置６０はこの信号に基づいて
前記真空ポンプ４１とコンプレッサ３２を作動させる。
この作動により大気が窒素富化室４４に吸引導入され
る。Next, the operation of such a fire extinguisher will be described. When the pressure of the nitrogen gas in the storage tank 5 decreases to a predetermined value with time due to leakage of the introduction valve 7, the flange 9, etc., a signal is input from the pressure sensor 34 to the control device 60. The controller 60 operates the vacuum pump 41 and the compressor 32 based on this signal.
By this operation, the atmosphere is sucked and introduced into the nitrogen enrichment chamber 44.
【００２５】そして、図２に示すように、蛇行する窒素
富化室４４で窒素濃度が高められたガスは窒素取得配管
４９から取得され、貯蔵タンク５内に供給される。従っ
て、貯蔵タンク５内の窒素の圧力が経時的に低下しても
所定圧まで短時間のうちに上昇する。その後、貯蔵タン
ク５内の窒素ガスの圧力が上限値に到達すると、圧力セ
ンサ３４からの信号に基づき制御装置６０は、真空ポン
プ４１及びコンプレッサ３２の作動を停止させる。この
ようにして、貯蔵タンク５内の窒素ガスの圧力は常時一
定の加圧状態に保持される。Then, as shown in FIG. 2, the gas whose nitrogen concentration is increased in the meandering nitrogen-enriching chamber 44 is acquired from the nitrogen acquisition pipe 49 and supplied into the storage tank 5. Therefore, even if the pressure of nitrogen in the storage tank 5 decreases with time, it rises to a predetermined pressure in a short time. After that, when the pressure of the nitrogen gas in the storage tank 5 reaches the upper limit value, the control device 60 stops the operation of the vacuum pump 41 and the compressor 32 based on the signal from the pressure sensor 34. In this way, the pressure of the nitrogen gas in the storage tank 5 is always kept constant.
【００２６】次に、複数の収納ケース１のいずれかにお
いて、電池内部の固体電解質管が何らかの理由で破損す
ると、陽極及び陰極の活物質である溶融した金属ナトリ
ウムと硫黄が直接接触して急激な化学反応を起こすこと
により火災事故が発生する。このとき、その収納ケース
１内の温度が上昇し、火災検出装置３が火災を検知す
る。そして、この火災検出装置３からの信号に基づいて
前記貯蔵タンク加圧弁２０、搬送弁２１、導入弁７及び
火災の発生した収納ケース１に対応する選択弁８が開か
れる。Next, in any of the plurality of storage cases 1, if the solid electrolyte tube inside the battery is damaged for some reason, the molten metal sodium, which is the active material of the anode and the cathode, and sulfur directly contact with each other and suddenly abruptly. A fire accident occurs due to a chemical reaction. At this time, the temperature inside the storage case 1 rises, and the fire detection device 3 detects a fire. Then, based on the signal from the fire detection device 3, the storage tank pressurizing valve 20, the transfer valve 21, the introduction valve 7 and the selection valve 8 corresponding to the storage case 1 in which the fire has occurred are opened.
【００２７】すると、加圧ボンベ１６内の窒素のガス圧
が貯蔵タンク５の内部と連結配管６及び分岐管６ａに作
用する。従って、貯蔵タンク５内の消火剤４は出口配管
１０、連結配管６内に至り、同連結配管６内の窒素ガス
流にのせられて、導入弁７及び選択弁８を介して収納ケ
ース１内へ投入される。そして、収納ケース１内におい
て消火剤４はその慣性力により飛翔した後、自重により
落下し、次第に収納ケース１内の各電池を覆うように堆
積する。従って、溶融状態にある硫黄、金属ナトリウム
及び多硫化ナトリウムが熱を奪われて冷却固化するとと
もに、酸素や水分が遮断されて化学反応が抑制され、火
災が消火される。収納ケース１内に給送された窒素ガス
は排気管１ａから外部に排気される。Then, the gas pressure of nitrogen in the pressure cylinder 16 acts on the inside of the storage tank 5, the connecting pipe 6 and the branch pipe 6a. Therefore, the fire extinguishing agent 4 in the storage tank 5 reaches the outlet pipe 10 and the connecting pipe 6 and is placed on the nitrogen gas flow in the connecting pipe 6, and the inside of the storage case 1 is passed through the introduction valve 7 and the selection valve 8. Is thrown into. Then, in the storage case 1, the extinguishing agent 4 flies by its inertial force, and then falls by its own weight, and gradually accumulates so as to cover each battery in the storage case 1. Therefore, the molten sulfur, metallic sodium, and sodium polysulfide are deprived of heat to cool and solidify, and oxygen and water are blocked to suppress the chemical reaction, thereby extinguishing the fire. The nitrogen gas fed into the storage case 1 is exhausted to the outside through the exhaust pipe 1a.
【００２８】上記のように、本実施例によれば、消火剤
４を収容する貯蔵タンク５内の窒素ガスの圧力は、加圧
ボンベ１６とは別の不活性ガス発生装置によって常に所
定圧に維持されているので、収納ケース１内の火災に対
して火災発生と同時に迅速に対処できる。従って、貯蔵
タンク加圧弁２０を開放して、加圧ボンベ１６内の圧力
を貯蔵タンク５内に常時付与する必要がなく、漏洩によ
る加圧ボンベ１６内の窒素の浪費を防止できる。従っ
て、前記のように、火災発生時には加圧ボンベ１６内の
窒素を有効に使用できる。また、貯蔵タンク５内の窒素
ガスが漏洩しても、不活性ガス発生装置によりその漏洩
分を補充できるため、導入弁７やフランジ９等の気密性
について厳密な設計は要求されないので、装置の設計が
容易となる。As described above, according to this embodiment, the pressure of the nitrogen gas in the storage tank 5 containing the fire extinguishing agent 4 is always kept at a predetermined pressure by an inert gas generator other than the pressure cylinder 16. Since it is maintained, the fire in the storage case 1 can be quickly dealt with at the same time as the fire occurs. Therefore, it is not necessary to open the storage tank pressurizing valve 20 to constantly apply the pressure in the pressurizing cylinder 16 to the storage tank 5, and it is possible to prevent waste of nitrogen in the pressurizing cylinder 16 due to leakage. Therefore, as described above, the nitrogen in the pressurized cylinder 16 can be effectively used when a fire occurs. Further, even if the nitrogen gas in the storage tank 5 leaks, the leaked amount can be supplemented by the inert gas generator, so that a strict design of the airtightness of the introduction valve 7, the flange 9, etc. is not required. Design becomes easy.
【００２９】さらに、前記実施例においては、不活性ガ
スとして大気中の窒素ガスを濃縮して使用するので、漏
洩分のガスを補充するためのボンベは不要である。な
お、ナトリウム−硫黄電池の消火にはナトリウムとの反
応性や絶縁性から水分は厳禁されているが、常時大気中
から窒素ガスを得て貯蔵タンク５に補充していくと、大
気中の湿気がまぎれ込み、長期間のうちには貯蔵タンク
５内の消火剤の湿分、水分が高まるとの懸念があり、コ
ンプレッサ３２の出口で水分離装置を設けるべきとの考
えもある。Furthermore, in the above-mentioned embodiment, since nitrogen gas in the atmosphere is concentrated and used as the inert gas, a cylinder for replenishing the leaked gas is unnecessary. Moisture is strictly prohibited to extinguish a sodium-sulfur battery due to its reactivity with sodium and its insulating property. However, if nitrogen gas is constantly obtained from the atmosphere and replenished in the storage tank 5, moisture in the atmosphere will be lost. There is a concern that the moisture and water content of the extinguishing agent in the storage tank 5 will increase over a long period of time due to the inclusion of water, and there is also an idea that a water separation device should be provided at the outlet of the compressor 32.
【００３０】しかし、前述したように、水蒸気は酸素以
上に分離膜４３を透過する特性があるので、湿気は全て
酸素富化室４５側に移動し、窒素富化室４４側に残らな
いので、この方式による窒素発生器３１には水分離装置
が不要であるとの利点も有する。However, as described above, since water vapor has a property of permeating the separation membrane 43 more than oxygen, all moisture moves to the oxygen enrichment chamber 45 side and does not remain on the nitrogen enrichment chamber 44 side. The nitrogen generator 31 according to this method also has an advantage that a water separator is not required.
【００３１】本発明は上記実施例に限定されるものでは
なく、例えば不活性ガス発生装置として漏洩ガス圧補充
用のガスボンベを使用したり等してもよい。The present invention is not limited to the above embodiment, and for example, a gas cylinder for supplementing the leak gas pressure may be used as an inert gas generator.
【００３２】[0032]
【発明の効果】以上詳述したように本発明によれば、消
火剤を収容する貯蔵タンク内の不活性ガスの圧力を常時
確保でき、ナトリウム−硫黄電池の収納ケース内の火災
に対して迅速に対処できるという優れた効果を奏する。
また、本発明によれば、大気中の窒素ガスを不活性ガス
として利用できるという効果を奏する。As described above in detail, according to the present invention, the pressure of the inert gas in the storage tank containing the fire extinguishing agent can be always secured, and the fire in the storage case of the sodium-sulfur battery can be quickly performed. It has an excellent effect of being able to deal with.
Further, according to the present invention, there is an effect that nitrogen gas in the atmosphere can be used as an inert gas.
【図１】本発明の実施例の消火装置を示す説明図であ
る。FIG. 1 is an explanatory diagram showing a fire extinguisher according to an embodiment of the present invention.
【図２】窒素発生器を示す概略断面図である。FIG. 2 is a schematic sectional view showing a nitrogen generator.
【図３】不活性ガス発生装置を作動させるための制御回
路を示すブロック図である。FIG. 3 is a block diagram showing a control circuit for operating an inert gas generator.
１…収納ケース、４…粒状消火剤、５…貯蔵タンク、６
…連結配管、７…弁としての導入弁。1 ... Storage case, 4 ... Granular fire extinguisher, 5 ... Storage tank, 6
… Connection pipe, 7… Introduction valve as a valve.
【手続補正書】[Procedure amendment]
【提出日】平成３年１０月２１日[Submission date] October 21, 1991
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１９[Name of item to be corrected] 0019
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１９】前記窒素富化室４４は実際には蛇行する一
本の溝状になっており、その一端には大気からの入口配
管４６が接続され、他端はコンプレッサ３２への給気配
管４７が接続されている。酸素富化室４５には真空ポン
プ４１の吸引配管４８が接続されている。真空ポンプ４
１を起動すると酸素富化室４５は窒素富化室４４より低
圧となり、窒素富化室４４内の空気は分離膜４３に溶
解、拡散し、酸素富化室４５側の表面で離脱して空気の
移動が行われるが、溶解、離脱する割合が各ガスによっ
て異なり、空気中に一般に含まれるものとしては、窒
素、酸素、アルゴン、炭酸ガス、水蒸気の順に高くな
り、酸素は窒素に対して２〜３倍大きい。The nitrogen enrichment chamber 44 is actually in the form of a meandering groove, one end of which is connected to an inlet pipe 46 from the atmosphere, and the other end of which is an air supply pipe 47 to the compressor 32. Are connected. A suction pipe 48 of the vacuum pump 41 is connected to the oxygen enrichment chamber 45. Vacuum pump 4
When 1 is activated, the oxygen enrichment chamber 45 has a lower pressure than the nitrogen enrichment chamber 44, the air in the nitrogen enrichment chamber 44 is dissolved and diffused in the separation membrane 43, and is separated on the surface on the oxygen enrichment chamber 45 side to release the air. However, the rate of dissolution and desorption varies depending on the gas. Generally, air contains nitrogen, oxygen, argon, carbon dioxide, and water vapor in that order. ~ 3 times larger.
Claims (2)
集合電池を収納した収納ケースと、粉末又は粒状の消火
剤が貯蔵された貯蔵タンクと、前記収納ケースと貯蔵タ
ンクとを連結する連結配管と、その連結配管中に設けら
れた弁と、前記貯蔵タンク内へ不活性ガスを供給するガ
ス供給装置と、前記弁の開放により消火剤を不活性ガス
流にのせて収納ケース内に投入するように構成した消火
装置において、 前記貯蔵タンクの内部に不活性ガスを圧入して同タンク
内を加圧する不活性ガス発生装置と、貯蔵タンク内の圧
力が一定に保持されるように前記不活性ガス発生装置の
作動を制御する制御装置とを設けたことを特徴とするナ
トリウム−硫黄電池における消火装置。1. A storage case storing an assembled battery composed of a sodium-sulfur battery, a storage tank storing powder or granular extinguishant, and a connecting pipe connecting the storage case and the storage tank. A valve provided in the connecting pipe, a gas supply device for supplying an inert gas into the storage tank, and a fire extinguishant placed on the inert gas flow by the opening of the valve so as to be put into the storage case. In the fire extinguisher configured, an inert gas generator that pressurizes an inert gas into the storage tank to pressurize the same, and the inert gas generation so that the pressure in the storage tank is kept constant. A fire extinguisher in a sodium-sulfur battery, which is provided with a control device for controlling the operation of the device.
離膜を用いて大気から窒素ガスを分離濃縮し、同ガスを
加圧して貯蔵タンク内に供給することを特徴とする請求
項１に記載のナトリウム−硫黄電池における消火装置。2. The inert gas generator uses an inert gas separation membrane to separate and concentrate nitrogen gas from the atmosphere, pressurize the gas and supply the gas into a storage tank. Fire extinguishing device in the sodium-sulfur battery described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3249528A JP2771360B2 (en) | 1991-09-27 | 1991-09-27 | Fire extinguisher in sodium-sulfur battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3249528A JP2771360B2 (en) | 1991-09-27 | 1991-09-27 | Fire extinguisher in sodium-sulfur battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0589908A true JPH0589908A (en) | 1993-04-09 |
| JP2771360B2 JP2771360B2 (en) | 1998-07-02 |
Family
ID=17194325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3249528A Expired - Lifetime JP2771360B2 (en) | 1991-09-27 | 1991-09-27 | Fire extinguisher in sodium-sulfur battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2771360B2 (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07178192A (en) * | 1993-12-24 | 1995-07-18 | Hochiki Corp | Extinguishment facility |
| US5607787A (en) * | 1993-05-04 | 1997-03-04 | Programme 3 Patent Holdings | High temperature storage battery |
| JPH10263109A (en) * | 1997-03-27 | 1998-10-06 | Nohmi Bosai Ltd | Fire extinguishing method and fire extinguishing device |
| JP2002095764A (en) * | 2000-09-26 | 2002-04-02 | Japan Field Kk | Method and device for fire extinguishing or pilot-ignition prevention for combustible liquid |
| JP2005522239A (en) * | 2002-02-09 | 2005-07-28 | アロイス・ヴォベン | Fire prevention |
| JP2011178250A (en) * | 2010-02-26 | 2011-09-15 | National Maritime Research Institute | System and method for storing and supplying inert gas |
| FR2997231A1 (en) * | 2012-10-18 | 2014-04-25 | IFP Energies Nouvelles | Emergency cooling system for lithium-ion battery of e.g. hybrid car, has fluid cartridge connected to gas diffusion device, and visual checking unit for checking operating condition of fluid cartridge and comprising luminous indicator |
| JP2014189375A (en) * | 2013-03-27 | 2014-10-06 | Daifuku Co Ltd | Product storing facility |
| JP2018075239A (en) * | 2016-11-10 | 2018-05-17 | 株式会社モリタホールディングス | Fire-extinguishing apparatus and method for extinguishing fire |
| CN113586126A (en) * | 2021-09-14 | 2021-11-02 | 南京双京电博特种机器人产业研究院有限公司 | Nitrogen-filled positive pressure explosion-proof system of underground wireless charging safety house and working method thereof |
| CN113578226A (en) * | 2021-09-08 | 2021-11-02 | 安徽芯核防务装备技术股份有限公司 | Inert gas protection system |
| CN114889428A (en) * | 2021-06-21 | 2022-08-12 | 宇通客车股份有限公司 | Power battery protection method and system |
| CN116454426A (en) * | 2023-06-16 | 2023-07-18 | 安徽中科中涣智能装备股份有限公司 | Method for controlling inert gas protection concentration of battery box |
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-
1991
- 1991-09-27 JP JP3249528A patent/JP2771360B2/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5607787A (en) * | 1993-05-04 | 1997-03-04 | Programme 3 Patent Holdings | High temperature storage battery |
| JPH07178192A (en) * | 1993-12-24 | 1995-07-18 | Hochiki Corp | Extinguishment facility |
| JPH10263109A (en) * | 1997-03-27 | 1998-10-06 | Nohmi Bosai Ltd | Fire extinguishing method and fire extinguishing device |
| JP2002095764A (en) * | 2000-09-26 | 2002-04-02 | Japan Field Kk | Method and device for fire extinguishing or pilot-ignition prevention for combustible liquid |
| JP2005522239A (en) * | 2002-02-09 | 2005-07-28 | アロイス・ヴォベン | Fire prevention |
| KR100815219B1 (en) * | 2002-02-09 | 2008-03-19 | 알로이즈 워벤 | Wind Power Installation with Equipment for Protection against Fire |
| JP2011178250A (en) * | 2010-02-26 | 2011-09-15 | National Maritime Research Institute | System and method for storing and supplying inert gas |
| FR2997231A1 (en) * | 2012-10-18 | 2014-04-25 | IFP Energies Nouvelles | Emergency cooling system for lithium-ion battery of e.g. hybrid car, has fluid cartridge connected to gas diffusion device, and visual checking unit for checking operating condition of fluid cartridge and comprising luminous indicator |
| JP2014189375A (en) * | 2013-03-27 | 2014-10-06 | Daifuku Co Ltd | Product storing facility |
| JP2018075239A (en) * | 2016-11-10 | 2018-05-17 | 株式会社モリタホールディングス | Fire-extinguishing apparatus and method for extinguishing fire |
| CN114889428A (en) * | 2021-06-21 | 2022-08-12 | 宇通客车股份有限公司 | Power battery protection method and system |
| CN113578226A (en) * | 2021-09-08 | 2021-11-02 | 安徽芯核防务装备技术股份有限公司 | Inert gas protection system |
| CN113586126A (en) * | 2021-09-14 | 2021-11-02 | 南京双京电博特种机器人产业研究院有限公司 | Nitrogen-filled positive pressure explosion-proof system of underground wireless charging safety house and working method thereof |
| CN113586126B (en) * | 2021-09-14 | 2024-03-15 | 南京双京电博特种机器人产业研究院有限公司 | Nitrogen-filled positive-pressure explosion-proof system of underground wireless charging safety house and working method thereof |
| WO2023140659A1 (en) * | 2022-01-19 | 2023-07-27 | 주식회사 엘지에너지솔루션 | Water injection unit and energy storage system including the same |
| CN116454426A (en) * | 2023-06-16 | 2023-07-18 | 安徽中科中涣智能装备股份有限公司 | Method for controlling inert gas protection concentration of battery box |
| CN116454426B (en) * | 2023-06-16 | 2023-08-22 | 安徽中科中涣智能装备股份有限公司 | Method for controlling inert gas protection concentration of battery box |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2771360B2 (en) | 1998-07-02 |
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