JPS6124286Y2 - - Google Patents
Info
- Publication number
- JPS6124286Y2 JPS6124286Y2 JP1979041160U JP4116079U JPS6124286Y2 JP S6124286 Y2 JPS6124286 Y2 JP S6124286Y2 JP 1979041160 U JP1979041160 U JP 1979041160U JP 4116079 U JP4116079 U JP 4116079U JP S6124286 Y2 JPS6124286 Y2 JP S6124286Y2
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- lid
- fire
- fire extinguishing
- metal plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000843 powder Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Description
【考案の詳細な説明】
本考案は粉末消火装置のノズル先端の密閉装置
の改良に係わるものである。[Detailed Description of the Invention] The present invention relates to an improvement of a sealing device for the nozzle tip of a powder fire extinguishing system.
粉末消火装置においては粉末消火剤を圧力ガス
と共に噴出するが、そのノズルに至る配管内には
粉末剤を残存することが普通であるから、ノズル
が開口していると水分がノズルから浸入・結露
し、消火剤粉末が固結して放出しない事故が発生
する。特に油槽など危険物装置に設ける粉末消火
装置（ノズルを油面近傍の槽内壁に沿つて消火剤
が拡散するように、水平かつ通常は槽壁の切線方
向に開口するように設置する）においては石油の
蒸気が凝縮し、粉末消火を触媒として急速に固結
するおそれがあるので、消防法第17条の３の３に
もとづき、昭和50年10月16日消防庁告示第14号別
表第８により、これらすべてのノズルの先端は常
時は完全に密閉し、火災時に開口する装置を設置
するよう規制されている。 In dry powder fire extinguishing systems, powder extinguishing agent is ejected together with pressurized gas, but it is normal for powder to remain in the piping leading to the nozzle, so if the nozzle is open, moisture may enter through the nozzle and condense. However, accidents occur where the extinguishing agent powder solidifies and cannot be released. In particular, dry powder fire extinguishing systems installed in hazardous materials equipment such as oil tanks (the nozzle is installed horizontally and usually opens in the tangential direction of the tank wall so that the extinguishing agent spreads along the tank inner wall near the oil surface) As petroleum vapor may condense and solidify rapidly using powder extinguishing as a catalyst, based on Article 17-3-3 of the Fire Service Act, Fire and Disaster Management Agency Notification No. 14 Appended Table 8 dated October 16, 1975. According to regulations, the tips of all these nozzles must be completely sealed at all times, and devices must be installed to open them in the event of a fire.
従来使用された密閉装置は、第１図に示すよう
に、椀底にノズルと同一の口径の孔を有する椀状
の蓋体４′をノズル本体１の先端に螺設し、アル
ミ箔１１をパツキング８を介してノズル先端の開
口部に張設・密封する方法があつた。火災時に粉
末消火と加圧ガス（通常ノズル先端で３Kg／cm2程
度以上）がアルミ箔を破つて噴出し、蓋体４′は
残存してノズル本体と共にノズル先端部を形成す
るもである。しかしながら、この方法ではアルミ
箔１１が常時外力により破れ易く、また先端５′
の附近に油の固形物を形成するなどの不備があつ
た。他にアルミ箔１１を用いない方法（図示しな
い）として椀状蓋体４′を無孔なものとし、螺設
部を止め、例えば平滑な擦着面とし、ゴムパツキ
ングを用いるなど低度の係止力で係止する方法が
あつた。火災時に粉末消火剤と加圧ガスが、前記
低度の係止力に打勝つて蓋体４′を吹き飛ばして
噴出する機構である。しかしながら、この方法も
常時に配管内の圧力が徐々に大となつて開口する
恐れがあり、また蓋体とノズル本体との擦着部な
どに汚物・錆等を生じて固着し、火災時に開口し
ない事故が生じるなどの欠点がある。 As shown in FIG. 1, the conventional sealing device has a bowl-shaped lid 4' having a hole with the same diameter as the nozzle in the bottom of the bowl, which is screwed onto the tip of the nozzle body 1, and an aluminum foil 11 is attached. There was a method in which the opening at the tip of the nozzle was stretched and sealed via the packing 8. In the event of a fire, extinguishing powder and pressurized gas (usually about 3 kg/cm 2 or more at the tip of the nozzle) break through the aluminum foil and eject, and the lid 4' remains and forms the tip of the nozzle together with the nozzle body. However, in this method, the aluminum foil 11 is always easily torn due to external force, and the tip 5'
There were deficiencies such as the formation of solid oil near the area. Another method (not shown) that does not use the aluminum foil 11 is to make the bowl-shaped lid 4' non-porous, fix the threaded part, make it a smooth rubbing surface, and use a low degree of locking such as using rubber packing. There was a way to lock it by force. In the event of a fire, the powder extinguishing agent and pressurized gas overcome the low locking force and blow out the lid 4'. However, even with this method, there is a risk that the pressure inside the pipe will gradually increase and the pipe will open, and dirt, rust, etc. may form and stick to the area where the lid body rubs against the nozzle body, causing the pipe to open in the event of a fire. There are disadvantages such as accidents that may occur.
他方、ノズル先端を専ら外力による破損から防
止する目的をもつて、スプリンクラーヘツドをカ
バー状蓋体を用いて包蓋する提案が実開昭53−
65697号などに示されている。 On the other hand, a proposal was made in 1973 to cover the sprinkler head with a cover-like lid, with the sole purpose of preventing the nozzle tip from being damaged by external force.
This is shown in No. 65697, etc.
この場合においてはカバーの有無に拘らず、昭
和40年自治省令第２号に定めるスプリンクラーヘ
ツドの技術上の規格、特に作動温度の規格に合格
する必要がある。更にまた噴出水圧（通常１Kg／
cm2以上）が低いため噴出水圧により吹きとばされ
る機構は採用し難い。したがつて帯状のカバー材
を採用し、低融点合金など高温により分解して自
重により投げ出される機構が採用される。したが
つて常時は無孔の密閉型カバーを必要とし、火災
時は噴出力により吹きとばされる必要のある粉末
消火装置のノズルには転用し難いものであつた。 In this case, regardless of the presence or absence of a cover, it is necessary to pass the technical standards for sprinkler heads stipulated in Ministry of Home Affairs Ordinance No. 2 of 1965, especially the standards for operating temperature. Furthermore, the water pressure (usually 1Kg/
cm 2 or more), it is difficult to adopt a mechanism in which it is blown away by jet water pressure. Therefore, a belt-shaped cover material is used, and a mechanism is adopted in which it decomposes at high temperatures and is thrown out by its own weight, such as a low-melting-point alloy. Therefore, it is difficult to use it as a nozzle for a powder fire extinguishing system, which requires a non-perforated airtight cover at all times, and which needs to be blown away by the ejection force in the event of a fire.
本願考案人は粉末消火装置のノズルにおける噴
出圧力が、薄い金属板を吹き飛ばすのに充分な力
をもつものであること、したがつて破れ易いアル
ミ箔を使用しなくても薄い金属板を用いて充分な
気密性を保つ方が有利であり、さらに間隙などに
汚物・錆を付着させて固着する恐れのある従来の
構造を、ノズル先端の外周への接着部分を減ずる
ことにより改良しうること、及びスプリンクラー
設備などに用いられる低融点合金などの高温によ
り分解する機構を粉末消火装置のノズルに新規に
導入することに着目し、前記の技術課題を解決す
べく種々検討した。その結果無孔の金属性の蓋
体、好ましくは椀状の薄い金属板よりなる蓋体
を、ノズルの前面の空間、好ましくはノズル先端
とその外周に空隙としての空間を隔てた位置に配
置し、該椀状蓋体の線状円形の口縁部を、ノズル
先端近傍の外周に低融点合金を用いて接合するこ
とにより、常時に丈夫で外力等によつては離脱し
難く、火災時は容易に外れて、しかも常時の腐食
進行による錆などにより固着する恐れのすくない
構造とした粉末消火装置の密閉ノズルを完成し、
本願考案に到達したものである。 The inventor of this application has determined that the jet pressure at the nozzle of the dry powder fire extinguishing system is strong enough to blow away a thin metal plate, and therefore, it is possible to use a thin metal plate without using easily tearable aluminum foil. It is advantageous to maintain sufficient airtightness, and furthermore, the conventional structure in which there is a risk of dirt and rust adhering to and sticking to the gaps can be improved by reducing the adhesive part of the nozzle tip to the outer periphery; We focused on introducing a new mechanism into the nozzle of powder fire extinguishing equipment that decomposes low melting point alloys used in sprinkler equipment and the like at high temperatures, and conducted various studies to solve the above technical problems. As a result, a nonporous metal lid, preferably a bowl-shaped thin metal plate, is placed in a space in front of the nozzle, preferably in a position separated by a gap between the nozzle tip and its outer periphery. By joining the linear circular mouth edge of the bowl-shaped lid to the outer periphery near the nozzle tip using a low melting point alloy, it is always strong and difficult to separate due to external force, etc., and in the event of a fire. We have completed a sealed nozzle for a powder fire extinguishing system that has a structure that allows it to come off easily and is less likely to become stuck due to rust due to constant corrosion.
This is what the invention of the present application has been achieved.
以下実施例を挙げて本考案を説明する。 The present invention will be explained below with reference to Examples.
第２図において、ノズル１には先端に開口部２
が、また根元３は配管接続部となつている。開口
部２の前面には、椀型の薄い金属板よりなる無孔
の蓋体４が、ノズル先端部５と空間部９を置いて
配置してある。ノズル１の外側部には薄い金属板
のリング６が設けてある。 In Figure 2, the nozzle 1 has an opening 2 at its tip.
However, the base 3 serves as a piping connection. A non-porous lid 4 made of a bowl-shaped thin metal plate is placed on the front surface of the opening 2, with a nozzle tip 5 and a space 9 in between. A ring 6 made of a thin metal plate is provided on the outer side of the nozzle 1.
リング６はナツト７でノズル１に固定してあ
り、８はパツキングである。そしてこのリング６
の外周部に前記蓋体４の口縁部３ａをハンダでろ
う付けしてある。ハンダは100℃で溶ける低融点
合金が好ましいが、必要に応じ、それ以上の又は
それ以下温度で溶けるものも使うことができる。
この構造以外に、ノズル１よりリング６を直接一
体に成形しても差支えない。 The ring 6 is fixed to the nozzle 1 with a nut 7, and 8 is a packing. And this ring 6
The mouth edge 3a of the lid 4 is soldered to the outer periphery of the lid 4. The solder is preferably a low melting point alloy that melts at 100°C, but it is also possible to use a solder that melts at a higher or lower temperature if necessary.
In addition to this structure, the ring 6 may be directly formed integrally with the nozzle 1.
また、蓋体４は耐蝕加工を施すことが好まし
い。 Further, it is preferable that the lid body 4 is subjected to a corrosion-resistant treatment.
ノズルの根元３は配管によつて粉末消火装置
（図示省略）に接続してある。 The base 3 of the nozzle is connected to a powder fire extinguishing system (not shown) via piping.
油槽に火災が発生すると、その熱で、蓋体の周
辺部３ａの低融点合金が溶けて、蓋体４は自重で
外れて落下するか、もしくは噴出する圧力ガスに
より吹き飛ばされ、ノズルの開口部２が露出する
（第３図参照）。然る後消火装置が作動して、ノズ
ル１より粉末薬剤を放出し消火する。 When a fire breaks out in the oil tank, the heat melts the low-melting-point alloy around the lid 4, and the lid 4 comes off under its own weight and falls, or is blown away by the ejected pressure gas, causing the nozzle opening to melt. 2 is exposed (see Figure 3). Thereafter, the fire extinguishing system is activated, and the powdered chemical is discharged from the nozzle 1 to extinguish the fire.
本考案は常時ノズルを密閉し、火災の熱で自動
的に開口するので、薬剤の配管内は完全に外気を
遮断し、配管の管理が完全で危急の際に事故がな
い。ノズルは薄い金属板の蓋体およびリングを用
いて、その周辺部をハンダ付密閉する構造である
ので、その部分の熱容量は小さく、また蓋体は受
熱面が大きいので低融点合金が急速に溶解し、多
くの場合は消火剤の噴出前に蓋体が落下する。ま
た蓋体の構造をノズル本体に接触させないことに
よつて蓋体からノズルに伝達しないようにして蓋
体が外れ易いようにしたことも有効に効果する。
また低融点合金が半ば溶解し、蓋体の係止力を弱
めた時点でノズルを噴射させると、蓋体を吹き飛
ばすことにより開口することもできる。 In this invention, the nozzle is always sealed and automatically opened by the heat of the fire, so the inside of the chemical piping is completely shut off from the outside air, and the piping is completely managed, so there is no accident in the event of an emergency. The nozzle uses a thin metal plate lid and ring, and the surrounding area is sealed with solder, so the heat capacity of that part is small, and the lid has a large heat-receiving surface, so low melting point alloys melt quickly. However, in many cases, the lid falls off before the extinguishing agent is sprayed. It is also effective to prevent the lid from being transmitted to the nozzle by making the lid structure not come into contact with the nozzle body, thereby making it easier for the lid to come off.
Further, if the nozzle is activated when the low melting point alloy is partially melted and the locking force of the lid is weakened, the lid can be opened by blowing it away.
第１図は従来の密閉ノズルの縦断面図、第２図
は本考案のノズルの縦断面図、第３図は蓋体が外
れている状態を示す側面図。
１……ノズル、４……蓋体。
FIG. 1 is a vertical sectional view of a conventional sealed nozzle, FIG. 2 is a vertical sectional view of the nozzle of the present invention, and FIG. 3 is a side view showing a state in which the lid is removed. 1... Nozzle, 4... Lid body.
Claims (1)
に直接接触しないように空間９を設けてノズル
の前面に載置し、該蓋体の周辺全部をノズルの
外周部に低融点合金を用いて接合することを特
徴とする粉末消火装置の密閉ノズル。 ２ ノズルの外周部に設けた薄い金属板よりなる
リング６に蓋体の周辺全部を接合してなる特徴
とする実用新案登録請求の範囲第１項記載の粉
末消火装置の密閉ノズル。[Claims for Utility Model Registration] 1. A non-porous lid body 4 made of a thin metal plate is connected to a nozzle 1.
A closed nozzle for a powder fire extinguishing system, characterized in that the lid is placed on the front surface of the nozzle with a space 9 provided therein so as not to come into direct contact with the nozzle, and the entire periphery of the lid is joined to the outer periphery of the nozzle using a low melting point alloy. . 2. A sealed nozzle for a dry powder fire extinguishing system according to claim 1, which is characterized in that the entire periphery of the lid is joined to a ring 6 made of a thin metal plate provided on the outer periphery of the nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979041160U JPS6124286Y2 (en) | 1979-03-29 | 1979-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979041160U JPS6124286Y2 (en) | 1979-03-29 | 1979-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55142168U JPS55142168U (en) | 1980-10-11 |
| JPS6124286Y2 true JPS6124286Y2 (en) | 1986-07-21 |
Family
ID=28911226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979041160U Expired JPS6124286Y2 (en) | 1979-03-29 | 1979-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6124286Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2554239B2 (en) * | 1994-07-12 | 1996-11-13 | 株式会社加藤厨房設備 | Equipment for removing oily smoke |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558596Y2 (en) * | 1976-11-05 | 1980-02-26 |
-
1979
- 1979-03-29 JP JP1979041160U patent/JPS6124286Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55142168U (en) | 1980-10-11 |
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