JP3047486U - Fire extinguisher for dry flashback - Google Patents
Fire extinguisher for dry flashbackInfo
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- JP3047486U JP3047486U JP1997008434U JP843497U JP3047486U JP 3047486 U JP3047486 U JP 3047486U JP 1997008434 U JP1997008434 U JP 1997008434U JP 843497 U JP843497 U JP 843497U JP 3047486 U JP3047486 U JP 3047486U
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Abstract
(57)【要約】
【課題】 ガスの通過量が大きくて圧力の低下が少な
く、且つガス配管中の爆発燃焼発生時に生じる火炎を効
果的に消炎し得ると共に、製造が簡易で多量生産に適
し、低コスト化が図れる乾式逆火防止器の消炎具を提供
すること。
【解決手段】 本考案に係る乾式逆火防止器は、厚さの
薄い且つ網目の細かいステンレス金網２を、互いの網目
３が分断されて微細になるように多数枚積層し、焼結加
圧により一体化して構成されている。
PROBLEM TO BE SOLVED: To provide a large amount of gas passage, a small decrease in pressure, to effectively extinguish a flame generated at the time of explosive combustion in gas piping, to be simple to manufacture, and suitable for mass production. To provide a flame extinguisher for a dry flashback arrestor that can be reduced in cost. SOLUTION: The dry flashback arrestor according to the present invention is formed by laminating a large number of stainless steel meshes 2 having a small thickness and a fine mesh so that the meshes 3 are separated and fine, and sintering and pressing are performed. And are integrated.
Description
【０００１】[0001]
従来、乾式逆火防止器の消炎具としては、ステンレス粉末等の焼結金属で円筒 状に形成されたもの、ニッケルおよびニッケルクロム等からなる発泡金属板を多 数枚重合したもの、または不銹鋼、銅、真鍮等からなる円形金属板の中心に通気 孔を穿設し、その通気孔より外周方向に向かって多数の細溝をエッチングし、外 周面に開口する円形金属板を多数枚積層した金属板の消炎具のものがあった。 Conventionally, fire extinguishers of a dry flashback arrestor include those made of sintered metal such as stainless steel powder and formed into a cylindrical shape, those formed by polymerizing a number of foamed metal plates made of nickel, nickel chrome, etc., or stainless steel. Ventilation holes were drilled in the center of a circular metal plate made of copper, brass, etc., a large number of narrow grooves were etched from the ventilation holes toward the outer periphery, and a number of circular metal plates opened on the outer peripheral surface were laminated. There was a metal plate extinguisher.
【０００２】 しかしながら、焼結金属の場合は、ガスの通過間隙面積の不定形および変動で ガスの流量を一定に確保することができにくいばかりでなく、小容量でガスの通 過による圧力低下が大きいので消炎効果が悪かった。また、大きいものになると 型代が高価になるばかりか、強度が弱く割れて破損する虞れがあった。さらに、 長い円筒状のものになると、プレスで成形するので均一な厚みの製品ができず、 仕上がり具合も悪く品質良好なものができなかった。However, in the case of a sintered metal, not only is it difficult to secure a constant gas flow rate due to the irregular shape and fluctuation of the gas passage gap area, but also the pressure drop due to gas passage with a small capacity. Since it was large, the anti-inflammatory effect was bad. In addition, when the size becomes large, not only the mold cost becomes expensive, but also the strength is weak, and there is a possibility that the mold is broken and damaged. Furthermore, when it was made into a long cylindrical product, it could not be produced with a uniform thickness because it was formed by pressing, and the quality was poor and the quality was not good.
【０００３】 発泡金属板の場合は、気泡通過中に吸熱作用を効果的に発揮し消炎を行なうが 、気泡の大きさにバラツキが出て、気泡によっては充分な吸熱作用を発揮するこ とができず消炎しにくいことがあると共に、発泡金属板は非常に高価であるので コスト高になった。[0003] In the case of a foamed metal plate, heat is extinguished by effectively exhibiting an endothermic effect during the passage of bubbles, but the size of the bubbles varies, and depending on the bubbles, a sufficient endothermic effect may be exhibited. In some cases, it was difficult to extinguish the flame, and the cost was high because the metal foam sheet was very expensive.
【０００４】 円形金属板の場合は、ガスの通路距離を長くする必要があるため、ガスの流動 圧力抵抗が大きくなり、消炎効果が上がらず、また多数の細溝を刻設しなければ ならないので、製作に手間がかかり保守点検にも多大の時間を要する問題点があ った。[0004] In the case of a circular metal plate, it is necessary to increase the gas passage distance, so that the gas flow pressure resistance increases, the quenching effect does not increase, and a large number of narrow grooves must be cut. However, there was a problem that the production was troublesome and the maintenance and inspection required much time.
【０００５】[0005]
本考案はこのような問題点を解消したもので、ガスの通過量が大きくて圧力の 低下が少なく、且つガス配管中の爆発燃焼発生時に生じる火炎を効果的に消炎し 得ると共に、製造が簡易で多量生産に適し、低コスト化が図れる乾式逆火防止器 の消炎具を提供するものである。 The present invention has solved such a problem, and has a large gas passage, a small decrease in pressure, and can effectively extinguish a flame generated when explosive combustion occurs in a gas pipe, and can be manufactured easily. It is intended to provide a fire extinguisher for a dry flashback arrestor which is suitable for mass production at low cost.
【０００６】[0006]
上記の課題を解決し、その目的を達成する手段として、本考案では、厚さの薄 い且つ網目の細かいステンレス金網を、互いの網目が分断されて微細になるよう に多数枚積層し、焼結加圧により一体化してなる乾式逆火防止器の消炎具を開発 し、採用した。 As a means for solving the above-mentioned problems and achieving the object, according to the present invention, a large number of thin stainless steel meshes having a fine mesh are laminated so that the meshes of the stainless steel meshes are divided and become fine. We have developed and adopted a fire extinguisher for a dry flashback arrestor integrated by consolidation and pressurization.
【０００７】 また、本考案では上記のように構成した乾式逆火防止器の消炎具において、多 数枚積層し、焼結加圧により一体化したステンレス金網の少なくとも片面に補強 金網を設けてなる乾式逆火防止器の消炎具、および多数枚積層し、焼結加圧によ り一体化したステンレス金網を円筒状に形成してなる乾式逆火防止器の消炎具を 開発し、採用した。Further, in the present invention, in the fire extinguisher of the dry flashback arrestor configured as described above, a reinforcing metal net is provided on at least one surface of a stainless steel net that is laminated and integrated by sintering and pressing. We have developed and adopted a fire extinguisher for a dry flash arrestor and a fire extinguisher for a dry flash arrestor that is formed by laminating a large number of sheets and integrating a stainless steel wire mesh into a cylindrical shape by sintering and pressing.
【０００８】[0008]
以下に、本考案の実施の形態を添付図面に基づいて説明すれば、１は極めて厚 さの薄い且つ網目の細かいステンレス製の金網２を多数枚各種各様に重ねること により、互いの網目３が分断されて微細になるよう積層し、焼結加圧して一体化 した消炎具本体である。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a mesh 3 formed by stacking a large number of extremely thin stainless steel meshes 2 in various forms. This is a flame extinguisher body that is laminated so as to be divided into fine pieces, and then sintered and pressed to be integrated.
【０００９】 この消炎具本体１を構成するステンレス金網２の積み重ね枚数は、使用するガ スの種類によって変わるが、例えば、アセチレンと酸素の混合ガスの場合には、 数百枚積層したものを使用し、水素と酸素またはプロパンと酸素の混合ガスの場 合はその約１／３の枚数でよく、数十枚から数百枚迄適宜に選択できる。The number of stacked stainless steel meshes 2 constituting the flame extinguishing tool main body 1 varies depending on the type of gas used. For example, in the case of a mixed gas of acetylene and oxygen, a stack of several hundred sheets is used. However, in the case of a mixed gas of hydrogen and oxygen or propane and oxygen, the number of sheets may be about 1/3 of the number, and several tens to several hundreds can be appropriately selected.
【００１０】 また、ステンレス金網２の厚さは２μ〜５００μ、網目３の大きさは２０〜１ ４００メッシュ、金網の種類は平織り、畳織り、綾畳織り等種々選択できると共 に、積層された上下のステンレス金網２、２同士を一体化する手段も、焼結の他 に、圧着、溶着、接着、ボルト締め等必要に応じて適当な手段が選ばれる。The thickness of the stainless steel wire mesh 2 is 2 μm to 500 μm, the size of the mesh 3 is 20 to 1400 mesh, and the type of wire mesh can be selected from various types such as plain weave, tatami weave, and twill tatami weave. Means for integrating the upper and lower stainless steel meshes 2 and 2 may be selected as appropriate in addition to sintering, such as crimping, welding, bonding, and bolting, as necessary.
【００１１】 数十枚〜数百枚積層されるステンレス金網２の下面または上面あるいは上下両 面には、線径の太い補強用の金網が重ねられることがあり、この金網を用いると 消炎具本体１が補強されて堅牢強固になる。A reinforcing wire mesh having a large wire diameter may be overlaid on the lower surface, upper surface, or both upper and lower surfaces of the stainless wire mesh 2 in which several tens to several hundreds are stacked. 1 is reinforced and becomes robust.
【００１２】 また、数十枚〜数百枚積層されるステンレス金網２の両側端を外側方に曲げ、 その両側端同士を接合溶接して図３に示すような円筒状に形成すれば、表面積が 増して大容量の場合の消炎具本体１として使用できるものである。この円筒状の 場合にも、内面または外面あるいは内外両面に線径の太い金網４を用いて補強す ることもある。[0012] Furthermore, if several tens to several hundreds of laminated stainless steel wire meshes 2 are bent outward on both sides, and both ends are welded together to form a cylindrical shape as shown in FIG. It can be used as the flame extinguisher body 1 in the case of a larger capacity. Even in the case of this cylindrical shape, the inner surface, the outer surface, or the inner and outer surfaces may be reinforced with a wire mesh 4 having a large wire diameter.
【００１３】 このように構成された消炎具本体１を乾式逆火防止器Ａに用いる例を図５で説 明すれば、１次側キャップ５に設けた流入口６と２次側キャップ７に設けた流出 口８の間の外筒９と内筒１０の間の消炎室１１に消炎具本体１が納められて用い られる。FIG. 5 illustrates an example in which the flame extinguishing tool body 1 configured as described above is used for a dry flashback arrester A. In FIG. 5, an inflow port 6 provided in the primary cap 5 and a secondary cap 7 are provided. The flame extinguisher main body 1 is used in a flame-extinguishing chamber 11 between the outer cylinder 9 and the inner cylinder 10 between the provided outlets 8.
【００１４】 そして、ガスの流通が正常な時には、図５に示すように、可燃性ガスは１次側 キャップ５の流入口６より入って逆止弁１２、遮断弁１３を押し上げて内筒１０ の通孔１４を通って消炎室１１内に入り、消炎具本体１のステンレス金網２の微 細な網目３を通過して外筒９と２次側キャップ７との空間１５を通って２次側キ ャップ７の流出口８に流れる。When the gas flow is normal, as shown in FIG. 5, the flammable gas enters through the inlet 6 of the primary side cap 5 and pushes up the check valve 12 and the shutoff valve 13 to raise the inner cylinder 10. Into the flame-extinguishing chamber 11 through the through hole 14 of the flame extinguishing tool, passes through the fine mesh 3 of the stainless steel wire mesh 2 of the flame-extinguishing tool body 1, passes through the space 15 between the outer cylinder 9 and the secondary side cap 7, It flows to the outlet 8 of the side cap 7.
【００１５】 逆火が生じた場合には、火炎が消炎室１１内に逆流伝播するが、逆流ガスは消 炎具本体１のステンレス金網２の微細な網目３を通過し、その圧力によって遮断 弁１３、逆止弁１２が下動すると共に、遮断弁１３が遮断解除スピンドル１６を 押し上げて遮断弁１３が１次側キャップ５の流入口６を塞いで閉鎖する。火炎は 多数枚重合されたステンレス金網２の消炎具本体１によって完全に消炎される。When a backfire occurs, the flame propagates back into the flame-extinguishing chamber 11, but the backflow gas passes through the fine mesh 3 of the stainless steel mesh 2 of the flame-extinguishing device main body 1, and the pressure thereof causes a shut-off valve. 13. As the check valve 12 moves down, the shut-off valve 13 pushes up the shut-off release spindle 16, and the shut-off valve 13 closes the inlet 6 of the primary side cap 5 to close. The flame is completely extinguished by the flame extinguisher body 1 of the stainless steel wire mesh 2 formed by multiplying the flame.
【００１６】[0016]
（実施例１） 以下に、本発明の具体的実施例を説明する。 縦線の直径が０．０７mm、横線の直径が０．０５mmであると共に、縦線方向が ２００メッシュ、横線方向が１４００メッシュ、厚さ１０μの畳織りしたＳＵＳ ３１６製の金網２を４００枚積層し、焼結加圧して７０φ×１００Ｌ×１０μの 消炎具本体１を得た。 (Example 1) Hereinafter, a specific example of the present invention will be described. The diameter of the vertical line is 0.07 mm, the diameter of the horizontal line is 0.05 mm, the vertical line direction is 200 mesh, the horizontal line direction is 1400 mesh, and the thickness is 10 μm. Then, the sintering pressure was applied to obtain a fire extinguisher main body 1 of 70φ × 100L × 10μ.
【００１７】 （実施例２） 縦線の直径が０．０７mm、横線の直径が０．０５mmであると共に、縦線方向が １５０メッシュ、横線方向が１５０メッシュ、厚さ１０μの平織りしたＳＵＳ３ １６製の金網２を５０枚積層し、両面に２０メッシュの補強用の太い金網４、４ を配した７０φ×１００Ｌ×１０μ×５０枚で板厚２．５２mmの消炎具本体１を 得た。(Example 2) A woven SUS316 having a vertical line diameter of 0.07 mm, a horizontal line diameter of 0.05 mm, a vertical line direction of 150 mesh, a horizontal line direction of 150 mesh, and a thickness of 10 μm, is plain-woven. 50 wire meshes 2 were laminated, and thickened wire meshes 4 and 4 of 20 mesh were provided on both sides to obtain 50 pieces of 70φ × 100L × 10 μ × 50 flame extinguishing tool bodies 1 having a thickness of 2.52 mm.
【００１８】 （実施例３） 縦線の直径が０．０７mm、横線の直径が０．０５mmであると共に、縦線方向が １５０メッシュ、横線方向が１５０メッシュ、厚さ１０μの平織りしたＳＵＳ３ １６製の金網２を８０枚積層し、両面に２０メッシュの補強用の太い金網４、４ を配した７０φ×１００Ｌ×１０μ×８０枚で板厚３．９５mmの消炎具本体１を 得た。(Example 3) A woven SUS316 having a vertical line diameter of 0.07 mm, a horizontal line diameter of 0.05 mm, a vertical line direction of 150 mesh, a horizontal line direction of 150 mesh and a thickness of 10 μm is plain woven. 80 wire meshes 2 were laminated, and a 70 mm × 100 L × 10 μ × 80 pieces of flame extinguisher main body 1 having a thickness of 3.95 mm and having a thick wire mesh 4 for reinforcement of 20 mesh on both sides were obtained.
【００１９】 （実施例４） 縦線の直径が０．０７mm、横線の直径が０．０５mmであると共に、縦線方向が １５０メッシュ、横線方向が１５０メッシュ、厚さ１０μの平織りしたＳＵＳ３ １６製の金網２を１００枚積層し、両面に２０メッシュの補強用の太い金網４、 ４を配した７０φ×１００Ｌ×１０μ×１００枚で板厚４．７７mmの消炎具本体 １を得た。Example 4 A woven SUS316 having a vertical line diameter of 0.07 mm, a horizontal line diameter of 0.05 mm, a vertical line direction of 150 mesh, a horizontal line direction of 150 mesh, and a thickness of 10 μm, is plain-woven. 100 wire meshes 2 were laminated, and a 70 mm × 100 L × 10 μ × 100 pieces of fire extinguisher main body 1 having a thickness of 4.77 mm were obtained in which 20 mesh thick reinforcing wire meshes 4 and 4 were arranged on both sides.
【００２０】 以上の実施例の消炎性能の試験結果を表１に、圧力損失測定試験の結果を表２ に示す。消炎性能試験は、本消炎具本体１を内蔵する乾式逆火防止器を、１次側 圧力計と２次側圧力計の間に置き、２次側圧力計の前方に点火器を、１次側圧力 計の後方に火炎検出器を配置して行なった。Table 1 shows the test results of the quenching performance of the above examples, and Table 2 shows the results of the pressure loss measurement test. In the fire-extinguishing performance test, the dry-type flashback arrestor incorporating the fire-extinguishing device body 1 was placed between the primary pressure gauge and the secondary pressure gauge, and the igniter was placed in front of the secondary pressure gauge. A flame detector was placed behind the pressure gauge.
【００２１】 また、圧力損失測定試験は、本消炎具本体１を内蔵する乾式逆火防止器を、１ 次側圧力計と２次側圧力計の間に置き、２次側圧力計の前方に流量調整弁、流量 計を置いて計量した。その結果は、次の表１および表２に示す通りである。In the pressure loss measurement test, a dry flashback arrestor incorporating the flame extinguishing tool main body 1 is placed between the primary side pressure gauge and the secondary side pressure gauge, and in front of the secondary side pressure gauge. A flow control valve and a flow meter were placed and weighed. The results are as shown in Tables 1 and 2 below.
【００２２】 なお、実施例１ではアセチレンと酸素の混合ガスを使用し、実施例２では水素 と酸素、ＬＰＧと酸素の混合ガスを使用した。また表２の二次側圧力と圧力損の 欄の、、は消炎試験１回、３回、８回終了後の測定値である。In Example 1, a mixed gas of acetylene and oxygen was used, and in Example 2, a mixed gas of hydrogen and oxygen, or LPG and oxygen was used. Further, in the column of the secondary pressure and the pressure loss in Table 2, are measured values after completion of the extinction test once, three times, and eight times.
【００２３】[0023]
【表１】 [Table 1]
【００２４】[0024]
【表２】 [Table 2]
【００２５】[0025]
以上のように、本考案は厚さの薄い且つ網目の細かいステンレス金網を、互い の網目が分断されて微細になるように多数枚積層し、焼結加圧により一体化して なる乾式逆火防止器の消炎具にかかるものであるから、次のような優れた効果を 達成することができる。 As described above, the present invention provides a dry flashback prevention method in which a large number of stainless steel meshes having a small thickness and a fine mesh are laminated so that the meshes of the stainless steel meshes are divided and become fine, and integrated by sintering and pressing. Since it is related to the fire extinguisher of the vessel, the following excellent effects can be achieved.
【００２６】 常態においては、流入口に流入するガスを逆止弁、内筒、通孔、消炎具の各ス テンレス金網の微細な網目を通して円滑に流出口側へ供給できるのは勿論、逆火 、逆流時には微細な網目によって、ガスが流れ、その逆流圧力によって、逆止弁 、遮断弁を瞬時に作動させて流入口を閉止すると共に、火炎はステンレス金網で 吸熱作用を効果的に受け消炎される。そして、常に均一なガスの流量が得られる と共に、ステンレス金網の積層枚数の変更や種類の組み合わせによって所望の流 量とすることができる。In a normal state, the gas flowing into the inflow port can be smoothly supplied to the outflow side through the fine mesh of the stainless steel wire mesh of the check valve, the inner cylinder, the through hole, and the flame extinguishing device. At the time of backflow, gas flows through a fine mesh, and by the backflow pressure, the check valve and the shutoff valve are instantaneously operated to close the inflow port, and the flame is effectively extinguished by the endothermic effect of the stainless steel wire mesh. You. In addition, a uniform flow rate of the gas can always be obtained, and a desired flow rate can be obtained by changing the number of laminated stainless steel meshes or by combining the types.
【００２７】 また、請求項２の考案においては、多数枚積層し、焼結加圧により一体化した ステンレス金網の少なくとも片面に補強金網を設けてなるものであるから、堅牢 強硬となり、丈夫で長期間に亘って使用できる。また、逆火時においては、消炎 がより一層早くなり確実になる。Further, in the invention of claim 2, since a reinforcing metal mesh is provided on at least one surface of a stainless steel mesh which is laminated and integrated by sintering and pressurizing, it becomes robust and strong, and is durable and long. Can be used over time. In case of flashback, the extinction will be faster and more reliable.
【００２８】 さらに、請求項３の考案においては、多数枚積層し、焼結加圧により一体化し たステンレス金網を円筒状に形成してあるから、表面積が増えてガスの通過量が 大きく、流動圧力抵抗も少なく大容量の場合に適するものである。Further, in the invention of claim 3, since the stainless steel wire mesh formed by laminating a plurality of sheets and integrating them by sintering and pressing is formed in a cylindrical shape, the surface area is increased, the gas passage amount is large, and the flow rate is large. It is suitable for large capacity with low pressure resistance.
【提出日】平成９年１０月３１日[Submission date] October 31, 1997
【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】考案の詳細な説明[Correction target item name] Detailed explanation of the device
【補正方法】変更[Correction method] Change
【０００１】[0001]
本考案は、乾式逆火防止器の消炎具に関するものである。The present invention relates to a fire extinguisher for a dry flashback arrestor.
【０００２】[0002]
【従来の技術】 従来、乾式逆火防止器の消炎具としては、ステンレス粉末等の焼結金属で円筒 状に形成されたもの、ニッケルおよびニッケルクロム等からなる発泡金属板を多 数枚重合したもの、または不銹鋼、銅、真鍮等からなる円形金属板の中心に通気 孔を穿設し、その通気孔より外周方向に向かって多数の細溝をエッチングし、外 周面に開口する円形金属板を多数枚積層した金属板の消炎具のものがあった。 2. Description of the Related Art Conventionally, a flame extinguishing tool for a dry flashback arrestor is formed by stacking a plurality of foamed metal plates made of nickel, nickel chromium, or the like, which are formed of a sintered metal such as stainless steel powder in a cylindrical shape. Or a circular metal plate made of stainless steel, copper, brass, etc., with a vent hole drilled in the center of the plate, and a number of narrow grooves etched into the outer peripheral direction from the vent hole to open the outer peripheral surface. There was a fire extinguisher of a metal plate in which a number of sheets were laminated.
【０００３】 しかしながら、焼結金属の場合は、ガスの通過間隙面積の不定形および変動で ガスの流量を一定に確保することができにくいばかりでなく、小容量でガスの通 過による圧力低下が大きいので消炎効果が悪かった。また、大きいものになると 型代が高価になるばかりか、強度が弱く割れて破損する虞れがあった。さらに、 長い円筒状のものになると、プレスで成形するので均一な厚みの製品ができず、 仕上がり具合も悪く品質良好なものができなかった。However, in the case of a sintered metal, not only is it difficult to secure a constant gas flow rate due to the irregular shape and fluctuation of the gas passage gap area, but also the pressure drop due to gas passage with a small capacity. Since it was large, the anti-inflammatory effect was bad. In addition, when the size becomes large, not only the mold cost becomes expensive, but also the strength is weak, and there is a possibility that the mold is broken and damaged. Furthermore, when it was made into a long cylindrical product, it could not be produced with a uniform thickness because it was formed by pressing, and the quality was poor and the quality was not good.
【０００４】 発泡金属板の場合は、気泡通過中に吸熱作用を効果的に発揮し消炎を行なうが 、気泡の大きさにバラツキが出て、気泡によっては充分な吸熱作用を発揮するこ とができず消炎しにくいことがあると共に、発泡金属板は非常に高価であるので コスト高になった。[0004] In the case of a foamed metal plate, the endothermic effect is effectively exhibited during the passage of the bubbles to extinguish the flame, but the size of the bubbles varies, and depending on the bubbles, a sufficient endothermic effect may be exhibited. In some cases, it was difficult to extinguish the flame, and the cost was high because the metal foam sheet was very expensive.
【０００５】 円形金属板の場合は、ガスの通路距離を長くする必要があるため、ガスの流動 圧力抵抗が大きくなり、消炎効果が上がらず、また多数の細溝を刻設しなければ ならないので、製作に手間がかかり保守点検にも多大の時間を要する問題点があ った。[0005] In the case of a circular metal plate, it is necessary to increase the gas passage distance, so that the gas flow pressure resistance increases, the quenching effect does not increase, and a large number of narrow grooves must be cut. However, there was a problem that the production was troublesome and the maintenance and inspection required much time.
【０００６】[0006]
本考案はこのような問題点を解消したもので、ガスの通過量が大きくて圧力の 低下が少なく、且つガス配管中の爆発燃焼発生時に生じる火炎を効果的に消炎し 得ると共に、製造が簡易で多量生産に適し、低コスト化が図れる乾式逆火防止器 の消炎具を提供するものである。 The present invention has solved such a problem, and has a large gas passage, a small decrease in pressure, and can effectively extinguish a flame generated when explosive combustion occurs in a gas pipe, and can be manufactured easily. It is intended to provide a fire extinguisher for a dry flashback arrestor which is suitable for mass production at low cost.
【０００７】[0007]
上記の課題を解決し、その目的を達成する手段として、本考案では、厚さの薄 い且つ網目の細かいステンレス金網を、互いの網目が分断されて微細になるよう に多数枚積層し、焼結加圧により一体化してなる乾式逆火防止器の消炎具を開発 し、採用した。 As a means for solving the above-mentioned problems and achieving the object, according to the present invention, a large number of thin stainless steel meshes having a fine mesh are laminated so that the meshes of the stainless steel meshes are divided and become fine. We have developed and adopted a fire extinguisher for a dry flashback arrestor integrated by consolidation and pressurization.
【０００８】 また、本考案では上記のように構成した乾式逆火防止器の消炎具において、多 数枚積層し、焼結加圧により一体化したステンレス金網の少なくとも片面に補強 金網を設けてなる乾式逆火防止器の消炎具、および多数枚積層し、焼結加圧によ り一体化したステンレス金網を円筒状に形成してなる乾式逆火防止器の消炎具を 開発し、採用した。Further, in the present invention, in the fire extinguisher of the dry flashback arrestor configured as described above, a reinforcing wire mesh is provided on at least one side of a stainless wire mesh which is laminated in large numbers and integrated by sintering and pressing. We have developed and adopted a fire extinguisher for a dry flash arrestor and a fire extinguisher for a dry flash arrestor that is formed by laminating a large number of sheets and integrating a stainless steel wire mesh into a cylindrical shape by sintering and pressing.
【０００９】[0009]
以下に、本考案の実施の形態を添付図面に基づいて説明すれば、１は極めて厚 さの薄い且つ網目の細かいステンレス製の金網２を多数枚各種各様に重ねること により、互いの網目３が分断されて微細になるよう積層し、焼結加圧して一体化 した消炎具本体である。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Reference numeral 1 denotes a mesh 3 formed by stacking a large number of extremely thin stainless steel meshes 2 in various forms. This is a flame extinguisher body that is laminated so as to be divided into fine pieces, and then sintered and pressed to be integrated.
【００１０】 この消炎具本体１を構成するステンレス金網２の積み重ね枚数は、使用するガ スの種類によって変わるが、例えば、アセチレンと酸素の混合ガスの場合には、 数百枚積層したものを使用し、水素と酸素またはプロパンと酸素の混合ガスの場 合はその約１／３の枚数でよく、数十枚から数百枚迄適宜に選択できる。The number of stacked stainless steel meshes 2 constituting the flame extinguishing tool main body 1 varies depending on the type of gas used. For example, in the case of a mixed gas of acetylene and oxygen, a stack of several hundred sheets is used. However, in the case of a mixed gas of hydrogen and oxygen or propane and oxygen, the number of sheets may be about 1/3 of the number, and several tens to several hundreds can be appropriately selected.
【００１１】 また、ステンレス金網２の厚さは２μ〜５００μ、網目３の大きさは２０〜１ ４００メッシュ、金網の種類は平織り、畳織り、綾畳織り等種々選択できると共 に、積層された上下のステンレス金網２、２同士を一体化する手段も、焼結の他 に、圧着、溶着、接着、ボルト締め等必要に応じて適当な手段が選ばれる。The thickness of the stainless steel wire mesh 2 is 2 μm to 500 μm, the size of the mesh 3 is 20 to 1400 mesh, and the type of wire mesh can be selected from plain weave, tatami weave, twill tatami weave and the like. Means for integrating the upper and lower stainless steel meshes 2 and 2 may be selected as appropriate in addition to sintering, such as crimping, welding, bonding, and bolting, as necessary.
【００１２】 数十枚〜数百枚積層されるステンレス金網２の下面または上面あるいは上下両 面には、線径の太い補強用の金網が重ねられることがあり、この金網を用いると 消炎具本体１が補強されて堅牢強固になる。A reinforcing wire mesh having a large wire diameter may be overlaid on the lower surface, the upper surface, or both upper and lower surfaces of the stainless steel wire mesh 2 in which several tens to several hundreds of wires are laminated. 1 is reinforced and becomes robust.
【００１３】 また、数十枚〜数百枚積層されるステンレス金網２の両側端を外側方に曲げ、 その両側端同士を接合溶接して図３に示すような円筒状に形成すれば、表面積が 増して大容量の場合の消炎具本体１として使用できるものである。この円筒状の 場合にも、内面または外面あるいは内外両面に線径の太い金網４を用いて補強す ることもある。[0013] Furthermore, if several tens to several hundreds of laminated stainless steel wire meshes 2 are bent outward on both sides, and the both ends are welded together to form a cylindrical shape as shown in FIG. It can be used as the flame extinguisher body 1 in the case of a larger capacity. Even in the case of this cylindrical shape, the inner surface, the outer surface, or the inner and outer surfaces may be reinforced with a wire mesh 4 having a large wire diameter.
【００１４】 このように構成された消炎具本体１を乾式逆火防止器Ａに用いる例を図５で説 明すれば、１次側キャップ５に設けた流入口６と２次側キャップ７に設けた流出 口８の間の外筒９と内筒１０の間の消炎室１１に消炎具本体１が納められて用い られる。Referring to FIG. 5, an example in which the fire extinguisher main body 1 configured as described above is used for a dry flashback arrestor A will be described. The flame extinguisher main body 1 is used in a flame-extinguishing chamber 11 between the outer cylinder 9 and the inner cylinder 10 between the provided outlets 8.
【００１５】 そして、ガスの流通が正常な時には、図５に示すように、可燃性ガスは１次側 キャップ５の流入口６より入って逆止弁１２、遮断弁１３を押し上げて内筒１０ の通孔１４を通って消炎室１１内に入り、消炎具本体１のステンレス金網２の微 細な網目３を通過して外筒９と２次側キャップ７との空間１５を通って２次側キ ャップ７の流出口８に流れる。When the gas flow is normal, as shown in FIG. 5, the combustible gas enters through the inlet 6 of the primary side cap 5 and pushes up the check valve 12 and the shutoff valve 13 to raise the inner cylinder 10. Into the flame-extinguishing chamber 11 through the through hole 14 of the flame extinguishing tool, passes through the fine mesh 3 of the stainless steel wire mesh 2 of the flame-extinguishing tool body 1, passes through the space 15 between the outer cylinder 9 and the secondary side cap 7, It flows to the outlet 8 of the side cap 7.
【００１６】 逆火が生じた場合には、火炎が消炎室１１内に逆流伝播するが、逆流ガスは消 炎具本体１のステンレス金網２の微細な網目３を通過し、その圧力によって遮断 弁１３、逆止弁１２が下動すると共に、遮断弁１３が遮断解除スピンドル１６を 押し上げて遮断弁１３が１次側キャップ５の流入口６を塞いで閉鎖する。火炎は 多数枚重合されたステンレス金網２の消炎具本体１によって完全に消炎される。When a backfire occurs, the flame propagates backward in the flame-extinguishing chamber 11, but the backflow gas passes through the fine mesh 3 of the stainless steel mesh 2 of the flame-extinguishing device main body 1, and the pressure thereof causes a shut-off valve. 13. As the check valve 12 moves down, the shut-off valve 13 pushes up the shut-off release spindle 16, and the shut-off valve 13 closes the inlet 6 of the primary side cap 5 to close. The flame is completely extinguished by the flame extinguisher body 1 of the stainless steel wire mesh 2 formed by multiplying the flame.
【００１７】[0017]
（実施例１） 以下に、本発明の具体的実施例を説明する。 縦線の直径が０．０７ｍｍ、横線の直径が０．０５ｍｍであると共に、縦線方 向が２００メッシュ、横線方向が１４００メッシュ、厚さ１０μの畳織りしたＳ ＵＳ３１６製の金網２を４００枚積層し、焼結加圧して７０φ×１００Ｌ×１０ μの消炎具本体１を得た。 (Example 1) Hereinafter, a specific example of the present invention will be described. The diameter of the vertical line is 0.07 mm, the diameter of the horizontal line is 0.05 mm, the length of the vertical line is 200 mesh, the width of the horizontal line is 1400 mesh, and 400 SUS316 wire mesh 2 of 10 μm in thickness are woven. Laminating and sintering were performed to obtain a flame-extinguishing tool main body 1 of 70φ × 100L × 10μ.
【００１８】 （実施例２） 縦線の直径が０．０７ｍｍ、横線の直径が０．０５ｍｍであると共に、縦線方 向が１５０メッシュ、横線方向が１５０メッシュ、厚さ１０μの平織りしたＳＵ Ｓ３１６製の金網２を５０枚積層し、両面に２０メッシュの補強用の太い金網４ 、４を配した７０φ×１００Ｌ×１０μ×５０枚で板厚２．５２ｍｍの消炎具本 体１を得た。Example 2 A plain woven SUS316 having a vertical line diameter of 0.07 mm, a horizontal line diameter of 0.05 mm, a vertical line direction of 150 mesh, a horizontal line direction of 150 mesh, and a thickness of 10 μm. 50 wire meshes 2 made of steel were laminated, and a thick wire mesh 4 for reinforcement of 20 mesh was disposed on both sides to obtain 50 pieces of 70φ × 100L × 10μ × 50 flame extinguishing tool bodies 1 having a thickness of 2.52 mm.
【００１９】 （実施例３） 縦線の直径が０．０７ｍｍ、横線の直径が０．０５ｍｍであると共に、縦線方 向が１５０メッシュ、横線方向が１５０メッシュ、厚さ１０μの平織りしたＳＵ Ｓ３１６製の金網２を８０枚積層し、両面に２０メッシュの補強用の太い金網４ 、４を配した７０φ×１００Ｌ×１０μ×８０枚で板厚３．９５ｍｍの消炎具本 体１を得た。Example 3 A plain woven SUS316 having a vertical line diameter of 0.07 mm, a horizontal line diameter of 0.05 mm, a vertical line direction of 150 mesh, a horizontal line direction of 150 mesh, and a thickness of 10 μm. 80 wire meshes 2 were laminated, and a 70 mm × 100 L × 10 μ × 80 pieces of flame extinguisher body 1 having a thickness of 3.95 mm and a thickness of 3.95 mm were obtained by arranging 20 mesh thick reinforcing wire meshes 4 and 4 on both sides.
【００２０】 （実施例４） 縦線の直径が０．０７ｍｍ、横線の直径が０．０５ｍｍであると共に、縦線方 向が１５０メッシュ、横線方向が１５０メッシュ、厚さ１０μの平織りしたＳＵ Ｓ３１６製の金網２を１００枚積層し、両面に２０メッシュの補強用の太い金網 ４、４を配した７０φ×１００Ｌ×１０μ×１００枚で板厚４．７７ｍｍの消炎 具本体１を得た。Example 4 A plain weave SU316 having a vertical line diameter of 0.07 mm, a horizontal line diameter of 0.05 mm, a vertical line direction of 150 mesh, a horizontal line direction of 150 mesh, and a thickness of 10 μm. 100 metal wire meshes 2 were laminated, and a 20 mm mesh reinforcing wire mesh 4 and 4 were arranged on both sides to obtain a flame-extinguishing device main body 1 of 70φ × 100L × 10 μ × 100 and having a plate thickness of 4.77 mm.
【００２１】 以上の実施例の消炎性能の試験結果を表１に、圧力損失測定試験の結果を表２ に示す。消炎性能試験は、本消炎具本体１を内蔵する乾式逆火防止器を、１次側 圧力計と２次側圧力計の間に置き、２次側圧力計の前方に点火器を、１次側圧力 計の後方に火炎検出器を配置して行なった。Table 1 shows the test results of the quenching performance of the above examples, and Table 2 shows the results of the pressure loss measurement test. In the fire-extinguishing performance test, the dry-type flashback arrestor incorporating the fire-extinguishing device body 1 was placed between the primary pressure gauge and the secondary pressure gauge, and the igniter was placed in front of the secondary pressure gauge. A flame detector was placed behind the pressure gauge.
【００２２】 また、圧力損失測定試験は、本消炎具本体１を内蔵する乾式逆火防止器を、１ 次側圧力計と２次側圧力計の間に置き、２次側圧力計の前方に流量調整弁、流量 計を置いて計量した。その結果は、次の表１および表２に示す通りである。In the pressure loss measurement test, a dry flashback arrestor incorporating the flame extinguishing tool main body 1 is placed between the primary pressure gauge and the secondary pressure gauge and in front of the secondary pressure gauge. A flow control valve and a flow meter were placed and weighed. The results are as shown in Tables 1 and 2 below.
【００２３】 なお、実施例１ではアセチレンと酸素の混合ガスを使用し、実施例２では水素 と酸素、ＬＰＧと酸素の混合ガスを使用した。また表２の二次側圧力と圧力損の 欄の、、は消炎試験１回、３回、８回終了後の測定値である。In Example 1, a mixed gas of acetylene and oxygen was used, and in Example 2, a mixed gas of hydrogen and oxygen, or LPG and oxygen was used. Further, in the column of the secondary pressure and the pressure loss in Table 2, are measured values after completion of the extinction test once, three times, and eight times.
【００２４】[0024]
【表１】 [Table 1]
【００２５】[0025]
【表２】 [Table 2]
【００２６】[0026]
以上のように、本考案は厚さの薄い且つ網目の細かいステンレス金網を、互い の網目が分断されて微細になるように多数枚積層し、焼結加圧により一体化して なる乾式逆火防止器の消炎具にかかるものであるから、次のような優れた効果を 達成することができる。 As described above, the present invention provides a dry flashback prevention method in which a large number of stainless steel meshes having a small thickness and a fine mesh are laminated so that the meshes of the stainless steel meshes are divided and become fine, and integrated by sintering and pressing. Since it is related to the fire extinguisher of the vessel, the following excellent effects can be achieved.
【００２７】 常態においては、流入口に流入するガスを逆止弁、内筒、通孔、消炎具の各ス テンレス金網の微細な網目を通して円滑に流出口側へ供給できるのは勿論、逆火 、逆流時には微細な網目によって、ガスが流れ、その逆流圧力によって、逆止弁 、遮断弁を瞬時に作動させて流入口を閉止すると共に、火炎はステンレス金網で 吸熱作用を効果的に受け消炎される。そして、常に均一なガスの流量が得られる と共に、ステンレス金網の積層枚数の変更や種類の組み合わせによって所望の流 量とすることができる。In a normal state, the gas flowing into the inflow port can be smoothly supplied to the outflow side through the fine mesh of the stainless steel wire mesh of the check valve, the inner cylinder, the through hole, and the flame extinguishing device. At the time of backflow, gas flows through a fine mesh, and by the backflow pressure, the check valve and the shutoff valve are instantaneously operated to close the inflow port, and the flame is effectively extinguished by the endothermic effect of the stainless steel wire mesh. You. In addition, a uniform flow rate of the gas can always be obtained, and a desired flow rate can be obtained by changing the number of laminated stainless steel meshes or by combining the types.
【００２８】 また、請求項２の考案においては、多数枚積層し、焼結加圧により一体化した ステンレス金網の少なくとも片面に補強金網を設けてなるものであるから、堅牢 強硬となり、丈夫で長期間に亘って使用できる。また、逆火時においては、消炎 がより一層早くなり確実になる。Further, in the invention of claim 2, since a reinforcing metal mesh is provided on at least one surface of a stainless steel mesh which is laminated and integrated by sintering and pressurizing, it becomes strong and strong, and is durable and long. Can be used over time. In case of flashback, the extinction will be faster and more reliable.
【００２９】 さらに、請求項３の考案においては、多数枚積層し、焼結加圧により一体化し たステンレス金網を円筒状に形成してあるから、表面積が増えてガスの通過量が 大きく、流動圧力抵抗も少なく大容量の場合に適するものである。Further, in the invention of claim 3, since a stainless steel wire mesh formed by laminating a plurality of sheets and integrating them by sintering and pressing is formed in a cylindrical shape, the surface area increases, the gas passage amount is large, and It is suitable for large capacity with low pressure resistance.
【図面の簡単な説明】[Brief description of the drawings]
【図１】ステンレス金網を積層した消炎具の簡略斜視図
である。FIG. 1 is a simplified perspective view of a flame extinguishing tool in which a stainless steel wire mesh is laminated.
【図２】図１の断面図である。FIG. 2 is a sectional view of FIG.
【図３】円筒状にした消炎具の斜視図である。FIG. 3 is a perspective view of a cylindrical flame extinguishing tool.
【図４】円筒状の消炎具の断面図である。FIG. 4 is a sectional view of a cylindrical flame extinguishing tool.
【図５】乾式逆火防止器に装着された状態の縦断面図で
ある。FIG. 5 is a longitudinal sectional view of a state where the apparatus is mounted on a dry flashback arrestor.
【図６】逆火の状態を示す一部の縦断面図である。FIG. 6 is a partial longitudinal sectional view showing a flashback state.
１ 消炎具本体 ２ ステンレス金網 ３ 網目 1 Flame extinguisher body 2 Stainless steel wire mesh 3 Mesh
Claims (3)
金網を、互いの網目が分断されて微細になるように多数
枚積層し、焼結加圧により一体化してなる乾式逆火防止
器の消炎具。1. A quenching method for a dry flashback arrestor formed by laminating a large number of stainless steel meshes having a small thickness and a fine mesh so that each mesh is divided and finely formed, and integrated by sintering and pressing. Utensils.
たステンレス金網の少なくとも片面に補強金網を設けて
なる請求項１に記載の乾式逆火防止器の消炎具。2. A fire extinguisher according to claim 1, wherein a reinforcing wire mesh is provided on at least one surface of a stainless wire mesh which is formed by laminating a plurality of sheets and integrating them by sintering pressure.
たステンレス金網を円筒状に形成してなる請求項１また
は２に記載の乾式逆火防止器の消炎具。3. The flame extinguisher for a dry flashback arrestor according to claim 1, wherein a stainless steel wire mesh formed by laminating a plurality of sheets and integrating them by sintering and pressing is formed in a cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997008434U JP3047486U (en) | 1997-09-04 | 1997-09-04 | Fire extinguisher for dry flashback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997008434U JP3047486U (en) | 1997-09-04 | 1997-09-04 | Fire extinguisher for dry flashback |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3047486U true JP3047486U (en) | 1998-04-14 |
Family
ID=43181793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1997008434U Expired - Lifetime JP3047486U (en) | 1997-09-04 | 1997-09-04 | Fire extinguisher for dry flashback |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3047486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023228440A1 (en) * | 2022-05-26 | 2023-11-30 | リンナイ株式会社 | Totally aerated combustion burner |
-
1997
- 1997-09-04 JP JP1997008434U patent/JP3047486U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023228440A1 (en) * | 2022-05-26 | 2023-11-30 | リンナイ株式会社 | Totally aerated combustion burner |
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