JPS6354968B2 - - Google Patents
Info
- Publication number
- JPS6354968B2 JPS6354968B2 JP58179546A JP17954683A JPS6354968B2 JP S6354968 B2 JPS6354968 B2 JP S6354968B2 JP 58179546 A JP58179546 A JP 58179546A JP 17954683 A JP17954683 A JP 17954683A JP S6354968 B2 JPS6354968 B2 JP S6354968B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pipe
- valve bodies
- prevention device
- space
- 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
- 239000012530 fluid Substances 0.000 claims description 14
- 230000002265 prevention Effects 0.000 claims description 10
- 239000007789 gas Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920004449 Halon® Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Landscapes
- Gas Burners (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、バツクフアイヤー防止装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a backfire prevention device.
熱硬化性樹脂積層板の製造に於いて、紙、ガラ
スクロス等の基材に熱硬化性樹脂を含浸、乾燥さ
せたプリプレグが使用される。
In the production of thermosetting resin laminates, prepreg is used, which is a base material such as paper or glass cloth impregnated with a thermosetting resin and dried.
プリプレグは、基材に熱硬化性樹脂ワニスを含
浸させ、乾燥させて得られるが、乾燥の際、ワニ
スの溶剤であるアルコール、アセトン、メチルエ
チルケトン等が乾燥機内に蒸発する。この溶剤蒸
気は乾燥機外部に導かれ、燃焼機で燃焼処理され
ている。 Prepreg is obtained by impregnating a base material with thermosetting resin varnish and drying it, but during drying, the solvents of the varnish, such as alcohol, acetone, and methyl ethyl ketone, evaporate in the dryer. This solvent vapor is led to the outside of the dryer and is burned in a combustor.
この発明のバツクフアイヤー防止装置は、例え
ばこのような乾燥機と燃焼機とを連結する可燃性
ガスが流れる管路の途中に設けられる。 The backfire prevention device of the present invention is installed, for example, in the middle of a pipe through which flammable gas flows, which connects such a dryer and a combustor.
従来この種のバツクフアイヤー防止装置として
は、特公昭52−38616号公報に示されるように、
可燃性ガスの管路の一部をある圧力がその内部か
ら加えられたときに損壊するような材料で構成し
てその部分を水面下に配設するようにしたものが
知られている。 Conventionally, as this type of backfire prevention device, as shown in Japanese Patent Publication No. 52-38616,
It is known that a part of a combustible gas pipe is made of a material that will be damaged when a certain pressure is applied from inside, and that part is disposed below the water surface.
この装置では、バツクフアイヤー発生の都度装
置を交換しなければならず、また可燃性ガスの発
生が多いときはバツクフアイヤーを完全に防止で
きない場合もあつた。 With this device, the device had to be replaced every time a backup fire occurred, and when a large amount of flammable gas was generated, backup fires could not be completely prevented in some cases.
管路を開閉自在の弁で閉塞する手段では、微小
な隙間があつても火炎が伝播するため、バツクフ
アイヤー防止装置としては使用できない。 If the pipe is closed with a valve that can be opened and closed, the flame will propagate even if there is a small gap, so it cannot be used as a backfire prevention device.
この発明は、このような欠点のないバツクフア
イヤー防止装置を提供することを目的とする。 The object of the present invention is to provide a backfire prevention device that does not have these drawbacks.
この発明は、可燃性ガスが流れる管路２を閉塞
する一対の開閉自在の弁体７，７と、この弁体
７，７により閉塞された空間８内に不燃性流体を
供給する機構とを備えることを特徴とするバツク
フアイヤー防止装置である。
This invention includes a pair of valve bodies 7, 7 which can be opened and closed to close a pipe 2 through which combustible gas flows, and a mechanism for supplying nonflammable fluid into a space 8 closed by the valve bodies 7, 7. This is a backfire prevention device characterized by comprising:
管路２中の可燃性ガス濃度が爆発限界に到達し
たときに、弁体７，７により管路を閉塞し、この
弁体間の空間８に不燃性流体を注入する。乾燥機
のような火気源でもし着火しても、火炎の伝播は
不燃性流体により防止され、不燃性流体の発生源
迄伝播せず、確実に爆発を防止できる。
When the combustible gas concentration in the pipe line 2 reaches the explosion limit, the pipe line is closed by the valve bodies 7, and nonflammable fluid is injected into the space 8 between the valve bodies. Even if a fire were to ignite from a fire source such as a dryer, the flame would be prevented from propagating by the non-flammable fluid and would not spread to the source of the non-flammable fluid, thereby reliably preventing an explosion.
以下図面に示す実施例について説明する。 The embodiments shown in the drawings will be described below.
第１図はこの発明の装置を使用した全体の系統
図であり、乾燥機１で発生した可燃性ガスは管路
２を経て燃焼機５に送られ、燃焼処理される。管
路２の途中に一対の弁体７，７を備え、この弁体
７，７間の空間８にタンク４に貯蔵された水のよ
うな不燃性流体をバルブ１２を開けて注入するよ
うにしたバツクフアイヤー防止装置３を設けてあ
る。不燃性流体としては水の他窒素ガス、ハロン
ガス、水蒸気等も使用できるが、万一火気源側で
火災を生じた場合には、放射熱の遮断も行えるの
で、水を使用するのが好ましい。水の場合はタン
ク４を高所に設置しておけば自重により落下注入
できる。勿論ポンプにより注入するようにしても
よい。不燃性流体としてガス体を使用する場合は
タンク４として高圧容器を使用し、ポンプにより
圧入する必要がある。 FIG. 1 is an overall system diagram using the apparatus of the present invention, in which combustible gas generated in a dryer 1 is sent to a combustor 5 via a pipe 2 and is combusted. A pair of valve bodies 7, 7 is provided in the middle of the pipe line 2, and a nonflammable fluid such as water stored in the tank 4 is injected into the space 8 between the valve bodies 7, 7 by opening the valve 12. A backfire prevention device 3 is provided. In addition to water, nitrogen gas, halon gas, water vapor, etc. can be used as the non-flammable fluid, but in the event that a fire occurs on the fire source side, it is preferable to use water because it can also cut off the radiant heat. In the case of water, if the tank 4 is installed at a high place, it can be poured by dropping due to its own weight. Of course, the injection may be performed using a pump. When using a gas as the nonflammable fluid, it is necessary to use a high-pressure container as the tank 4 and pressurize it with a pump.
第２図及び第３図は系統図を含む要部の断面図
である。弁胴１１に設けた弁体７，７はエヤーシ
リンダー６，６を作動させるとリンク９、弁軸１
０により回動して管路２を閉塞する。エヤーシリ
ンダー６，６は管路の適宜箇所に設けたセンサー
２１の信号をガス濃度計１８により感知し、ガス
濃度が所定値を越えた場合にシリンダーの切り換
え電磁弁１９，１９を動作させ、空気を送り込む
ことにより作動する。弁体７，７が弁座に着座す
るとリミツトスイツチ２０，２０が作動してバル
ブ１２を開き、注入管１３を経て空間８内にタン
ク４内の不燃性流体が注入される。その際空間８
内あるガス体は排出管１４、内圧が微増したとき
に開となるリークバルブ１５を経て空間８外に排
出される。可燃性ガスの濃度が所定値以下に低下
した後ドレン抜き管１６のバルブ１７を開き、弁
体７，７を開くことにより系外に排出され、再使
用可能となる。 FIGS. 2 and 3 are sectional views of main parts including a system diagram. When the air cylinders 6, 6 are operated, the valve bodies 7, 7 provided in the valve body 11 are connected to the link 9, the valve stem 1.
0 to close the pipe line 2. The air cylinders 6, 6 detect the signal of the sensor 21 provided at an appropriate location in the pipe line with the gas concentration meter 18, and when the gas concentration exceeds a predetermined value, operate the cylinder switching solenoid valves 19, 19, and air the air cylinders 6, 6. It is activated by feeding. When the valve bodies 7, 7 are seated on the valve seats, the limit switches 20, 20 are operated to open the valve 12, and the nonflammable fluid in the tank 4 is injected into the space 8 through the injection pipe 13. At that time space 8
The gas inside is discharged to the outside of the space 8 through a discharge pipe 14 and a leak valve 15 that opens when the internal pressure increases slightly. After the concentration of the flammable gas has decreased to a predetermined value or less, the valve 17 of the drain pipe 16 is opened, and the valve bodies 7, 7 are opened to discharge the combustible gas to the outside of the system, making it possible to reuse it.
以上説明した一連の動作はこのように自動的に
行うのが好ましいが、全て又は部分的に手動で動
作させるようにしても差支えない。またリンクと
シリンダーのバランスは使用する不燃性流体によ
つても異なるが、水の場合400Kgの水圧がかかる
のでこれに耐えるように設計する必要がある。更
に、各バルブ特に不燃性流体の注入用バルブ１２
はできるだけ短時間に注入完了できるサイズのバ
ルブを選定しなければならない。 Although it is preferable that the series of operations described above be performed automatically in this manner, it is also possible to perform all or part of the operations manually. The balance between the link and cylinder will also vary depending on the nonflammable fluid used, but in the case of water, 400 kg of water pressure is applied, so the design must be able to withstand this pressure. Furthermore, each valve, in particular a valve 12 for the injection of non-flammable fluids.
A valve of a size that allows the injection to be completed in as short a time as possible must be selected.
この発明のバツクフアイヤー防止装置は、可燃
性ガスが流れる管路２を閉塞する一対の開閉自在
の弁体７，７と、この弁体７，７により閉塞され
る空間８内に不燃性流体を供給する機構とを備え
この空間８内に不燃性流体を注入するようにした
ので、バツクフアイヤーを確実に防止でき、また
注入した不燃性流体を排出するだけで装置を再使
用できるようになつた。
The backfire prevention device of the present invention includes a pair of valve bodies 7, 7 which can be opened and closed to block a pipe 2 through which combustible gas flows, and a nonflammable fluid is supplied into a space 8 blocked by the valve bodies 7, 7. Since the nonflammable fluid is injected into this space 8, backfire can be reliably prevented, and the device can be reused simply by discharging the injected nonflammable fluid.
図面は何ずれも本発明の実施例を示し、第１図
は全体の系統図、第２図は要部の断面図、第３図
は系統図を含む要部の一部切欠断面図である。
符号の説明 １…可燃性ガス発生源、３…バツ
クフアイヤー防止装置、４…タンク、５…燃焼
機、７…弁体、８…空間。
The drawings all show embodiments of the present invention, and Fig. 1 is an overall system diagram, Fig. 2 is a sectional view of the main part, and Fig. 3 is a partially cutaway sectional view of the main part including the system diagram. . Explanation of symbols 1... Flammable gas generation source, 3... Backfire prevention device, 4... Tank, 5... Burner, 7... Valve body, 8... Space.
Claims (1)
閉自在の弁体と、この弁体により閉塞された空間
内に不燃性流体を供給する機構とを備えることを
特徴とするバツクフアイヤー防止装置。1. A backfire prevention device characterized by comprising a pair of valve bodies that can be opened and closed to close a pipe through which combustible gas flows, and a mechanism that supplies nonflammable fluid into a space blocked by the valve bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17954683A JPS6071811A (en) | 1983-09-28 | 1983-09-28 | Prevention device of back fire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17954683A JPS6071811A (en) | 1983-09-28 | 1983-09-28 | Prevention device of back fire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6071811A JPS6071811A (en) | 1985-04-23 |
| JPS6354968B2 true JPS6354968B2 (en) | 1988-10-31 |
Family
ID=16067635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17954683A Granted JPS6071811A (en) | 1983-09-28 | 1983-09-28 | Prevention device of back fire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6071811A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040002264A (en) * | 2002-06-29 | 2004-01-07 | 현대자동차주식회사 | Damping apparatus on back fire |
| KR100534980B1 (en) * | 2002-09-13 | 2005-12-08 | 현대자동차주식회사 | a counterflow preventing apparatus for an intake air system of automobile engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238616A (en) * | 1975-09-22 | 1977-03-25 | Toshiba Corp | Rotary compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5837416Y2 (en) * | 1981-05-28 | 1983-08-23 | 能美防災工業株式会社 | Fire prevention equipment for air transport ducts for raw materials, etc. |
-
1983
- 1983-09-28 JP JP17954683A patent/JPS6071811A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238616A (en) * | 1975-09-22 | 1977-03-25 | Toshiba Corp | Rotary compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6071811A (en) | 1985-04-23 |
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