JP2005307344A - Method and apparatus for preventing occurrence of intake eddy of fluid - Google Patents

Method and apparatus for preventing occurrence of intake eddy of fluid Download PDF

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JP2005307344A
JP2005307344A JP2005071150A JP2005071150A JP2005307344A JP 2005307344 A JP2005307344 A JP 2005307344A JP 2005071150 A JP2005071150 A JP 2005071150A JP 2005071150 A JP2005071150 A JP 2005071150A JP 2005307344 A JP2005307344 A JP 2005307344A
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fluid
outflow
generation
outflow channel
suction vortex
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Shinichiro Yokoya
真一郎 横谷
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Japan Science and Technology Agency
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus capable of preventing the occurrence of intake eddy of fluid with a simple confoguration. <P>SOLUTION: This apparatus is provided with; a fluid reserving part 1, in which the float-up fluid material 5 to be prevented to the mixing when the fluid material 4 is taken out, at the upper part of the fluid material 4 to be made to flowing-out; a cylindrical or a funnel-shaped flowing-out passage 2 formed at the bottom part of this fluid reserving part 1 and having 0-85° tapered angle on the inner peripheral surface of this flowing-out passage; and a guide vane 3 having the diameter corresponding to the shape of this flowing-out passage 2 and also, the length in the flowing-out passage direction, and fitted to this flowing-out passage 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、流体の吸い込み渦の発生防止方法およびその装置に係り、特に、溶鋼と一緒にスラグが流出するのを防止する方法およびその装置に関するものである。   The present invention relates to a method and apparatus for preventing the generation of fluid suction vortices, and more particularly to a method and apparatus for preventing slag from flowing out together with molten steel.

一般に、例えば、風呂の水を抜く際に流体渦の発生により水面の回転中心部分が凹んで空気を巻き込んでしまう現象が見られる。つまり、流体の吸い込み渦が発生する。これは水に限った現象ではなく、製鋼プロセスの溶鋼流出時にも同じ現象が起きる。   In general, for example, when a bath water is drained, there is a phenomenon that the center of rotation of the water surface is recessed due to the generation of fluid vortex and air is entrained. That is, a fluid suction vortex is generated. This phenomenon is not limited to water. The same phenomenon occurs when molten steel flows out of the steelmaking process.

図１５は従来の製鋼プロセスの転炉の模式図である。この図に示すように、炉体１０１の底部の出鋼孔１０２から溶鋼１０３を流出させる際、流体の吸い込み渦１０４の発生により溶鋼１０３と共に非金属生成物であるスラグ１０５も吸い込まれて流出してしまう。   FIG. 15 is a schematic view of a conventional steelmaking process converter. As shown in this figure, when the molten steel 103 flows out from the steel outlet hole 102 at the bottom of the furnace body 101, the slag 105, which is a non-metallic product, is also sucked out together with the molten steel 103 due to the generation of the fluid suction vortex 104. End up.

製鋼プロセスにおけるスラグカットは良質の鋼製品を製造するためには、重要な問題である。そのため、従来より、製鋼プロセスの精錬終了後に溶鋼を流出させる際の、容器内のスラグと溶鋼との効率良い分離が要望されている。
なし Slag cutting in the steelmaking process is an important issue for producing good quality steel products. Therefore, conventionally, efficient separation between the slag in the container and the molten steel is required when the molten steel is allowed to flow out after the refining of the steelmaking process.
None

上記したように、溶鋼１０３の流出時に流体の吸い込み渦１０４の発生により溶鋼１０３と共にスラグ１０５も吸い込まれてしまうことがないようにするために、図１６に示すように、出鋼孔１０２にボール状の浮体１０６を浮かせたり、図１７に示すように、出鋼孔１０２にダーツ状の浮体１０７を浮かせたり、図１８に示すように、石灰１０８を添加することでスラグ１０５を固化させるなどの試みがある。   As described above, in order to prevent the slag 105 from being sucked together with the molten steel 103 due to the generation of the fluid suction vortex 104 when the molten steel 103 flows out, as shown in FIG. The floating body 106 is floated, as shown in FIG. 17, the dart-shaped floating body 107 is floated in the outgoing steel hole 102, or the slag 105 is solidified by adding lime 108 as shown in FIG. There is an attempt.

また、図１９に示すように、出鋼孔１０２の下方にスライディングノズル１０９を設け、その開閉を制御するようにしたり、図２０に示すように、出鋼孔１０２の下方からエアージェット１１０によりスラグ１０５を吹き上げるようにしたり、図２１に示すように、出鋼孔１０２の下方に配置されるストッパー式のエアージェット１１１によりスラグ１０５を吹き上げるようにしたものが提案されている。   Further, as shown in FIG. 19, a sliding nozzle 109 is provided below the steel outlet hole 102 so as to control the opening and closing thereof, or as shown in FIG. As shown in FIG. 21, the slag 105 is blown up by a stopper type air jet 111 arranged below the steel output hole 102 as shown in FIG.

しかしながら、上記のような方法では、有効なスラグのカットにはならず、大きな改善はできなかった。   However, the method as described above did not cut slag effectively, and could not be improved greatly.

本発明は、上記状況に鑑みて、簡単な構成により、流体の吸い込み渦の発生を防止することができる流体の吸い込み渦の発生防止方法およびその装置を提供することを目的とする。   In view of the above circumstances, an object of the present invention is to provide a fluid suction vortex generation prevention method and apparatus capable of preventing the generation of a fluid suction vortex with a simple configuration.

〔１〕流体の吸い込み渦の発生防止方法において、流出すべき流体物の上部に該流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体を入れた流体溜め部の、前記流出すべき流体物の流出流路と前記流体溜め部との境界部に、この流出流路方向に長さを有する案内羽根を配置し、流体の吸い込み渦の発生を防止し、前記浮遊流体物が流出流路へ流出することを防止することを特徴とする。   [1] In the method for preventing the generation of the fluid suction vortex, the outflow of the fluid reservoir in which the fluid in which the floating fluid to be prevented from being mixed at the time of the outflow of the fluid is placed in the upper part of the fluid to be outflowed A guide vane having a length in the direction of the outflow channel is arranged at the boundary between the outflow channel of the fluid to be discharged and the fluid reservoir, so that the generation of the fluid suction vortex is prevented, and the floating fluid flows out. It is characterized by preventing outflow to the flow path.

〔２〕流出すべき流体物の上部に該流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体を入れた流体溜め部の、前記流出すべき流体物の流出流路中に、この流出流路方向に長さを有する案内羽根を配置し、流体の吸い込み渦の発生を防止し、前記浮遊流体物が流出流路へ流出することを防止することを特徴とする。   [2] In the outflow passage of the fluid to be discharged, in the fluid reservoir part in which the fluid in which the floating fluid to be prevented from being mixed at the time of the outflow of the fluid is placed in the upper part of the fluid to be discharged, A guide vane having a length in the direction of the outflow channel is arranged to prevent the generation of a fluid suction vortex and to prevent the floating fluid from flowing out into the outflow channel.

〔３〕上記〔２〕記載の流体の吸い込み渦の発生防止方法において、前記流出流路は、該流出流路の内周面がテーパ角０°〜８５°を有する円筒形または漏斗形の流出流路であり、前記案内羽根は前記流出流路の形状に対応した径を有することを特徴とする。   [3] In the method for preventing generation of a fluid suction vortex according to [2] above, the outflow channel is a cylindrical or funnel-shaped outflow in which an inner peripheral surface of the outflow channel has a taper angle of 0 ° to 85 °. The guide vane has a diameter corresponding to the shape of the outflow channel.

〔４〕上記〔２〕記載の流体の吸い込み渦の発生防止方法において、前記案内羽根の上下位置を調整可能にすることを特徴とする。   [4] In the method for preventing generation of a fluid suction vortex according to [2], the vertical position of the guide vanes can be adjusted.

〔５〕流体の吸い込み渦の発生防止装置において、流出させるべき流体物の上部に前記流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体溜め部と、この流体溜め部の底部に形成される流出流路と、この流出流路と前記流体溜め部との境界部に前記流出流路方向に長さを有する案内羽根とを具備することを特徴とする。   [5] In the apparatus for preventing the generation of a fluid suction vortex, a fluid reservoir portion where floating fluid to be prevented from being mixed at the time of outflow of the fluid material floats above the fluid material to be discharged, and a bottom portion of the fluid reservoir portion. An outflow passage formed, and a guide vane having a length in the outflow passage direction is provided at a boundary portion between the outflow passage and the fluid reservoir.

〔６〕上記〔５〕記載の流体の吸い込み渦の発生防止装置において、前記流出流路に段部を設け、この段部に前記案内羽根を保持することを特徴とする。   [6] The fluid suction vortex generation preventing device according to [5], wherein a step portion is provided in the outflow passage, and the guide blade is held in the step portion.

〔７〕流体の吸い込み渦の発生防止装置において、流出させるべき流体物の上部に前記流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体溜め部と、この流体溜め部の底部に形成され、内周面がテーパ角０°〜８５°を有する円筒形または漏斗形の流出流路と、この流出流路の形状に対応した径を有するとともに、この流出流路方向に長さを有し、前記流出流路に装着される案内羽根とを具備することを特徴とする。   [7] In the fluid suction vortex generation preventing device, a fluid reservoir portion where floating fluid to be prevented from being mixed at the time of outflow of the fluid material floats above the fluid material to be discharged, and a bottom portion of the fluid reservoir portion. A cylindrical or funnel-shaped outflow passage formed with an inner peripheral surface having a taper angle of 0 ° to 85 °, a diameter corresponding to the shape of the outflow passage, and a length in the outflow passage direction. And a guide vane attached to the outflow channel.

〔８〕流体の吸い込み渦の発生防止装置において、流出すべき流体物の上部に前記流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体溜め部と、この流体溜め部の底部に形成され、内周面がテーパ角０°〜８５°を有する円筒形または漏斗形の流出流路と、この流出流路の形状に対応した径を有するとともに、この流出流路方向に長さを有し、前記流出流路に装着される案内羽根と、この案内羽根の固定具とを具備することを特徴とする。   [8] In the fluid suction vortex generation prevention device, a fluid reservoir portion where floating fluid to be prevented from being mixed at the time of the outflow of the fluid material floats above the fluid material to be discharged, and a bottom portion of the fluid reservoir portion. A cylindrical or funnel-shaped outflow passage formed with an inner peripheral surface having a taper angle of 0 ° to 85 °, a diameter corresponding to the shape of the outflow passage, and a length in the outflow passage direction. And a guide vane mounted on the outflow channel and a fixture for the guide vane.

〔９〕上記〔５〕から〔８〕の何れか１項記載の流体の吸い込み渦の発生防止装置において、前記案内羽根の羽根の数が２〜８枚であることを特徴とする。   [9] The fluid suction vortex generation preventing device according to any one of [5] to [8] above, wherein the number of the guide blades is 2 to 8.

〔１０〕上記〔７〕、〔８〕又は〔９〕記載の流体の吸い込み渦の発生防止装置において、前記案内羽根の上端の回転径と下端回転径と間の差と前記流出流路の中心線とのなす角が０°〜８５°であることを特徴とする。   [10] In the fluid suction vortex generation preventing device according to [7], [8] or [9] above, the difference between the upper end rotating diameter and the lower end rotating diameter of the guide vane and the center of the outflow passage The angle formed with the line is 0 ° to 85 °.

〔１１〕上記〔７〕から〔１０〕の何れか１項記載の流体の吸い込み渦の発生防止装置において、前記固定装置は前記案内羽根の上下方向の位置調整手段を具備することを特徴とする。   [11] The fluid suction vortex generation preventing device according to any one of [7] to [10], wherein the fixing device includes a vertical position adjustment means for the guide vanes. .

〔１２〕上記〔５〕から〔１１〕の何れか１項記載の流体の吸い込み渦の発生防止装置において、前記流体溜め部が円筒形状又は角筒形状であることを特徴とする。   [12] The fluid suction vortex generation preventing device according to any one of [5] to [11], wherein the fluid reservoir portion has a cylindrical shape or a rectangular tube shape.

〔１３〕上記〔１２〕記載の流体の吸い込み渦の発生防止装置において、前記流出流路を前記円筒形状又は角筒形状の流体溜め部の中心部から偏芯させた位置に配置することを特徴とする。   [13] The fluid suction vortex preventing device according to [12], wherein the outflow channel is arranged at a position eccentric from a center of the cylindrical or square cylindrical fluid reservoir. And

本発明によれば、簡単な構成により、流出流路断面積を狭めることなく、流体の吸い込み渦の発生を防止し、流出すべき液体物の流出時に浮遊流体物の混入を阻止することができる。   According to the present invention, it is possible to prevent the generation of a fluid suction vortex without reducing the cross-sectional area of the outflow channel with a simple configuration, and to prevent the floating fluid from being mixed when the liquid material to be outflowed. .

流出すべき流体物の上部に前記流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体溜め部の流出流路中にこの流出流路方向に長さを有する案内羽根を配置し、流出流路断面積を狭めることなく、流体の吸い込み渦の発生を防止し、前記浮遊流体物の流出流路への流出を防止する。   A guide vane having a length in the direction of the outflow channel is disposed in the outflow channel of the fluid reservoir in which the floating fluid to be prevented from being mixed at the time of outflow of the fluid is disposed above the fluid to be outflowed, Without narrowing the cross-sectional area of the outflow channel, the generation of a fluid suction vortex is prevented and the outflow of the floating fluid to the outflow channel is prevented.

本発明の実施の形態について図面を参照して詳細に説明する。   Embodiments of the present invention will be described in detail with reference to the drawings.

図１は本発明の実施例を示す流体の吸い込み渦の発生防止装置の模式図、図２はその流出流路の形状を示す断面図、図３はその案内羽根の斜視図、図４はその案内羽根の構成図であり、図４（ａ）は上面図、図４（ｂ）は側面図である。   FIG. 1 is a schematic view of a fluid suction vortex preventing device according to an embodiment of the present invention, FIG. 2 is a sectional view showing the shape of the outflow passage, FIG. 3 is a perspective view of the guide vane, and FIG. It is a block diagram of a guide blade | wing, FIG. 4 (a) is a top view, FIG.4 (b) is a side view.

これらの図において、１は流体溜め部、２は流出流路、３は流出流路２に配置される案内羽根、４は流出すべき流体物、５は流出すべき流体物４の上部に浮かぶ浮遊流体物、６は流体の供給口である。   In these drawings, 1 is a fluid reservoir, 2 is an outflow channel, 3 is a guide vane disposed in the outflow channel 2, 4 is a fluid to be flown out, and 5 is floating above the fluid 4 to be flown out. A floating fluid, 6 is a fluid supply port.

これらの図に示すように、本発明では、流体溜め部１の流出流路２中にその流出流路２の方向に長さを有する案内羽根３を配置し、流体の吸い込み渦の発生を防止して、流出すべき流体物４の流出時に浮遊流体物５が流出流路２へ一緒に流出するのを防止する。   As shown in these drawings, in the present invention, a guide vane 3 having a length in the direction of the outflow channel 2 is disposed in the outflow channel 2 of the fluid reservoir 1 to prevent the generation of a fluid suction vortex. Thus, the floating fluid 5 is prevented from flowing out to the outflow passage 2 when the fluid 4 to be discharged flows out.

流出流路２は、図２に示すように、流出流路２の中心線７（これと平行な平行線７′）に対して、その内周面８が角度θ＝０°〜８５°を有する。つまり、上部が広く、下部が狭いテーパ角θを有する漏斗状の流出流路２となる。ただし、角度θが０°の場合は、後述する図８に示すように、円筒形状の流出流路となる。   As shown in FIG. 2, the outflow passage 2 has an inner surface 8 at an angle θ = 0 ° to 85 ° with respect to the center line 7 (parallel line 7 ′ parallel to the outflow passage 2). Have. That is, the funnel-shaped outflow passage 2 having a taper angle θ with a wide upper portion and a narrow lower portion is formed. However, when the angle θ is 0 °, as shown in FIG.

一方、案内羽根３は、図３〜図４に示すように、流出流路２の形状と対応した形状を有する。つまり、図２〜図３に示すように、流出流路２の内周面８のテーパ角がθである場合には、案内羽根３の外周部の上下方向のテーパ角もθとする。ここでは、案内羽根３は４枚の羽根からなり、流出すべき流体物４の整流を安定して生成させることができ、好適である。ただし、状況によっては、案内羽根の数を２枚〜８枚と変更することもできる。このように、例えば、２枚〜８枚と偶数の枚数であると安定な整流が生成され、流出流路断面積を狭めることなく、流体の吸い込み渦の発生を防止することができる。   On the other hand, the guide blade 3 has a shape corresponding to the shape of the outflow passage 2 as shown in FIGS. That is, as shown in FIGS. 2 to 3, when the taper angle of the inner peripheral surface 8 of the outflow passage 2 is θ, the vertical taper angle of the outer peripheral portion of the guide vane 3 is also θ. Here, the guide vane 3 is composed of four vanes, and can stably generate the rectification of the fluid 4 to be discharged, which is preferable. However, depending on the situation, the number of guide vanes can be changed from 2 to 8. Thus, for example, when the number is 2 to 8 and an even number, stable rectification is generated, and generation of fluid suction vortex can be prevented without narrowing the cross-sectional area of the outflow channel.

そして、案内羽根３および流出流路２の傾斜角を角度θに設定することにより、流出流路２の内周面８に案内羽根３の外側面が係合することになり、流体物４の流下とあいまって、案内羽根３を流出流路２に簡便に固定することができる。   Then, by setting the inclination angle of the guide vane 3 and the outflow channel 2 to the angle θ, the outer surface of the guide vane 3 is engaged with the inner peripheral surface 8 of the outflow channel 2, and the fluid 4 In combination with the flow down, the guide vane 3 can be simply fixed to the outflow channel 2.

図５および図６は上記した案内羽根３の一部を変更したものであり、案内羽根１１の上端に係合突起１２を設けるようにして、この係合突起１２のみが流出流路２の内周面８に係止されている。その場合、案内羽根１１を比重の大きい金属で作製することにより、重力により安定的に固定することができる。   FIGS. 5 and 6 show a part of the guide vane 3 modified as described above. An engagement projection 12 is provided at the upper end of the guide vane 11, and only this engagement projection 12 is inside the outflow channel 2. Locked to the peripheral surface 8. In that case, the guide vane 11 can be stably fixed by gravity by making it with a metal having a large specific gravity.

このように構成したことにより、案内羽根１１を流出流路２に極めて簡単に固定することができる。   With this configuration, the guide vane 11 can be fixed to the outflow channel 2 very easily.

また、案内羽根３，１１を直に流出流路２に装着する場合には、案内羽根３（または案内羽根１１の係合突起１２）の大きさを流出流路２の案内羽根３を装着したい場所の直径に合わせて取り替えることによって案内羽根３の上下方向の調整位置の調整を行うようにしてもよい。   Further, when the guide vanes 3 and 11 are directly attached to the outflow passage 2, the size of the guide vane 3 (or the engagement protrusion 12 of the guide vane 11) is desired to be attached to the outflow passage 2. You may make it adjust the adjustment position of the up-down direction of the guide blade 3 by changing according to the diameter of a place.

かかる装置には、例えば、流出すべき流体物４としての果樹液（液体）が供給口６から供給されるが、その果樹液には浮遊流体物５（泡状の浮遊物）が浮いている。そのような場合に案内羽根３の装着により流体の吸い込み渦の発生を防止できるので、下澄みの果樹液のみを流出流路２から流出させることができる。   For example, a fruit tree liquid (liquid) as a fluid substance 4 to be discharged is supplied to the apparatus from a supply port 6, and a floating fluid substance 5 (foamed floating substance) floats in the fruit tree liquid. . In such a case, since the generation of the fluid suction vortex can be prevented by mounting the guide vanes 3, only the fruit juice of the supernatant can be discharged from the outflow passage 2.

図７は本発明の他の実施例を示す流体の吸い込み渦の発生防止装置の模式図、図８は図７の変形例を示す流体の吸い込み渦の発生防止装置の模式図である。   FIG. 7 is a schematic diagram of a fluid suction vortex generation preventing apparatus according to another embodiment of the present invention, and FIG. 8 is a schematic diagram of a fluid suction vortex generation preventing apparatus according to a modification of FIG.

これらの図において、２１は流体溜め部、２２は流出流路、２３は流出流路２２に配置される案内羽根、２４は支持棒、２５は固定具、２６は流出すべき流体物、２７は流出すべき流体物２６の上部に浮かぶ浮遊流体物である。   In these drawings, 21 is a fluid reservoir, 22 is an outflow channel, 23 is a guide vane disposed in the outflow channel 22, 24 is a support rod, 25 is a fixture, 26 is a fluid to be outflowed, and 27 is This is a floating fluid floating on the top of the fluid 26 to be discharged.

流体溜め部２１の流出流路２２中にその流出流路２２方向に長さを有する案内羽根２３を配置し、流体の吸い込み渦の発生を防止して、流出すべき流体物２６の流出時に浮遊流体物２７が流出流路２２へ一緒に流出するのを防止する。   A guide vane 23 having a length in the direction of the outflow channel 22 is arranged in the outflow channel 22 of the fluid reservoir 21 to prevent the generation of a fluid suction vortex and float when the fluid 26 to be outflowed. The fluid 27 is prevented from flowing out to the outflow passage 22 together.

流出流路２２は、図７に示すように、上部が広く、下部が狭いテーパ角θ（θ＝０〜８５°）を有する漏斗状の流出流路２２となる。また、案内羽根２３の外周部の上下方向のテーパ角もθとする。ただし、角度θが０°の場合は、図８に示すように、円筒形状の流出流路３１及びそれと合致する形状で、テーパ角が０の円筒形状の案内羽根３２となる。   As shown in FIG. 7, the outflow channel 22 is a funnel-shaped outflow channel 22 having a taper angle θ (θ = 0 to 85 °) having a wide upper portion and a narrow lower portion. Further, the taper angle in the vertical direction of the outer peripheral portion of the guide vane 23 is also θ. However, when the angle θ is 0 °, as shown in FIG. 8, a cylindrical outflow passage 31 and a cylindrical guide blade 32 having a shape matching the cylindrical outflow passage 31 and a taper angle of 0 are obtained.

このような案内羽根２３は当然流出流路２２にそのまま装着してもよいが、図７に示すように、支持棒２４を介して固定具２５に固定するようにしてもよい。このように配置すると、流出すべき流体物２６の動きに関係なく案内羽根２３が固定具２５で固定されるので、安定な整流板の機能を果たすことができる。   Such guide vanes 23 may naturally be mounted on the outflow channel 22 as they are, but may be fixed to the fixture 25 via a support bar 24 as shown in FIG. With such an arrangement, the guide vane 23 is fixed by the fixing tool 25 regardless of the movement of the fluid 26 to be discharged, so that a stable function of the current plate can be achieved.

また、案内羽根２３の上下方向の調整を、支持棒２４と固定具２５との間の螺子の調整により行うことができる。   Further, the vertical adjustment of the guide vane 23 can be performed by adjusting a screw between the support rod 24 and the fixture 25.

図９は本発明の更なる他の実施例を示す流体の吸い込み渦の発生防止装置の模式図、図１０は図９に示す流体の吸い込み渦の発生防止装置の案内羽根の斜視図である。   FIG. 9 is a schematic view of a fluid suction vortex generation preventing apparatus according to still another embodiment of the present invention, and FIG. 10 is a perspective view of a guide vane of the fluid suction vortex generation preventing apparatus shown in FIG.

これらの図に示すように、流体溜め部４１と流出流路４２との境界部に流出流路方向に長さを有する案内羽根４３を配置する。したがって、流出すべき流体物４４は案内羽根４３によって整流された状態で流出流路４２へと導かれるので、流体の吸い込み渦の発生は防止され、流出すべき流体物４４の上部に浮かぶ浮遊流体物４５が巻き込まれることがない。   As shown in these drawings, a guide vane 43 having a length in the direction of the outflow channel is disposed at the boundary between the fluid reservoir 41 and the outflow channel 42. Therefore, since the fluid substance 44 to be discharged is guided to the outlet flow path 42 while being rectified by the guide vanes 43, the generation of the fluid suction vortex is prevented, and the floating fluid floating above the fluid substance 44 to be discharged is prevented. The object 45 is not caught up.

この実施例では、流体溜め部４１と流出流路４２との境界部に流出流路方向に長さを有する案内羽根４３を配置するだけの極めて簡便な構成で済み、コストを低減することができる。   In this embodiment, an extremely simple configuration is sufficient in which the guide vane 43 having a length in the direction of the outflow channel is disposed at the boundary between the fluid reservoir 41 and the outflow channel 42, and the cost can be reduced. .

図１１は図９の変形例を示す図、図１２はその変形例の案内羽根の上面図である。   FIG. 11 is a view showing a modification of FIG. 9, and FIG. 12 is a top view of the guide vane of the modification.

この実施例では、流体溜め部５１の底部５３に段部５４を有する流出流路５２が設けられており、その段部５４に案内羽根５５が保持されるように構成されている。因みに、各部の寸法を示すと、例えば、流体溜め部５１の直径は３２０ｍｍ、底部５３からの高さは２３２．５ｍｍ、底部５３の段部５４の直径は１６０ｍｍ、流出流路５２の直径は２０ｍｍ、羽根５５の直径は１６０ｍｍ、高さは４０ｍｍ、流出すべき流体物の底部５３からの高さは２００ｍｍである。   In this embodiment, an outflow passage 52 having a stepped portion 54 is provided at the bottom 53 of the fluid reservoir 51, and the guide vane 55 is held by the stepped portion 54. Incidentally, the dimensions of each part are shown, for example, the diameter of the fluid reservoir 51 is 320 mm, the height from the bottom 53 is 232.5 mm, the diameter of the step 54 of the bottom 53 is 160 mm, and the diameter of the outflow channel 52 is 20 mm. The diameter of the blade 55 is 160 mm, the height is 40 mm, and the height from the bottom 53 of the fluid to be discharged is 200 mm.

この実施例でも、流体溜め部５１と流出流路５２との境界部（底部５３の段部５４）に流出流路方向に長さを有する案内羽根５５を保持するだけの極めて簡便な構成で済み、コストを低減することができる。特に、この実施例によれば、羽根５５は底部５３の段部５４に安定に保持することができる。   Also in this embodiment, an extremely simple configuration is sufficient in that a guide vane 55 having a length in the direction of the outflow channel is held at the boundary between the fluid reservoir 51 and the outflow channel 52 (step 54 of the bottom 53). Cost can be reduced. In particular, according to this embodiment, the blade 55 can be stably held on the stepped portion 54 of the bottom portion 53.

図１３は本発明の流体溜め部の中心位置から偏芯させた位置に配置する流出流路を有する流体の吸い込み渦の発生防止装置の上面図であり、図１４はその模式図である。   FIG. 13 is a top view of a device for preventing the generation of a fluid suction vortex having an outflow passage disposed at a position eccentric from the center position of the fluid reservoir of the present invention, and FIG. 14 is a schematic diagram thereof.

円筒形状の流体溜め部６１の底部６２の中心部から偏芯した位置に段部６３を有する流出流路６４が形成され、その段部６３に案内羽根６５が保持されるように構成されている。ここで、円筒形状の流体溜め部６１の直径φは、例えば約１０００ｍｍであり、その中心点６８からＬ（３００ｍｍ）偏芯した位置に中心点６９がくるように流出流路６４が形成されている。   An outflow passage 64 having a stepped portion 63 is formed at a position eccentric from the center of the bottom 62 of the cylindrical fluid reservoir 61, and the guide vanes 65 are held by the stepped portion 63. . Here, the diameter φ of the cylindrical fluid reservoir 61 is, for example, about 1000 mm, and the outflow channel 64 is formed so that the center point 69 comes to a position eccentric from the center point 68 by L (300 mm). Yes.

このように構成することで、流出すべき流体物６６は偏芯した位置にある流出流路６４から流出するので、流出すべき流体物６６の上部に浮かぶ浮遊流体物６７の渦流化はより防止され、浮遊流体物６７の巻き込みが阻止されるという利点がある。   With this configuration, the fluid 66 to be discharged flows out of the outflow passage 64 at an eccentric position, and thus the vortexing of the floating fluid 67 floating above the fluid 66 to be discharged is further prevented. There is an advantage that the entrainment of the suspended fluid 67 is prevented.

かかる装置を、製鋼プロセスに適用する場合においては、流出すべき流体物は溶鋼であり、浮遊流体物はスラグである。   When such an apparatus is applied to a steelmaking process, the fluid to be discharged is molten steel and the suspended fluid is slag.

その場合には、流体溜め部における溶鋼の流れは案内羽根によって整流されて取り出されるため、流体の吸い込み渦は発生することがない。したがって、溶鋼上のスラグが下方へ巻き込まれることはなくなり、流体溜め部の溶鋼の上層部に安定して保持されることになる。   In that case, since the flow of the molten steel in the fluid reservoir is rectified and taken out by the guide vanes, the fluid suction vortex does not occur. Accordingly, the slag on the molten steel is not caught downward and is stably held in the upper layer of the molten steel in the fluid reservoir.

よって、案内羽根を配置するだけの簡単な構成により、流出流路断面積を狭めることなく、流体の吸い込み渦は発生することがなくなり、取り出されるべきでない浮遊流体物が溶鋼とともに流出流路から流出するのを防止することができる。更に、製鋼プロセスにおける転炉の場合、湯面変動も低位で安定した。   Therefore, with a simple configuration in which only the guide vanes are arranged, the suction vortex of the fluid is not generated without reducing the cross-sectional area of the outflow channel, and the floating fluid that should not be taken out flows out of the outflow channel together with the molten steel. Can be prevented. Furthermore, in the case of the converter in the steelmaking process, the molten metal surface fluctuation was stable at a low level.

なお、製鋼プロセスにおいては、転炉に限らず、取りなべ、タンディッシュ間で溶鋼を移す際にも適用できることは言うまでもない。   Needless to say, the steelmaking process can be applied not only to the converter but also to the transfer of molten steel between tundishes.

また、精錬分野を始め化学薬品等の分野にも本発明は応用可能である。   Further, the present invention can be applied to the field of chemicals and the like including the refining field.

なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。   In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

本発明の流体の吸い込み渦の発生防止方法およびその装置は、流出させるべきでない浮遊流体物の流出を有効に阻止することができ、製鋼プロセスのスラグカット装置としても利用可能である。   INDUSTRIAL APPLICABILITY The method and apparatus for preventing the generation of a fluid suction vortex according to the present invention can effectively prevent outflow of floating fluid that should not be discharged, and can also be used as a slag cutting device for steelmaking processes.

本発明の実施例を示す流体の吸い込み渦の発生防止装置の模式図である。It is a schematic diagram of the generation | occurrence | production prevention apparatus of the suction vortex of the fluid which shows the Example of this invention. 本発明の実施例を示す流出流路の形状を示す断面図である。It is sectional drawing which shows the shape of the outflow channel which shows the Example of this invention. 本発明の実施例を示す案内羽根の斜視図である。It is a perspective view of the guide blade which shows the Example of this invention. 本発明の実施例を示す案内羽根の構成図である。It is a block diagram of the guide blade | wing which shows the Example of this invention. 本発明の実施例を示す案内羽根を変形した流体の吸い込み渦の発生防止装置の模式図である。It is a schematic diagram of the generation | occurrence | production prevention apparatus of the suction vortex of the fluid which deform | transformed the guide blade which shows the Example of this invention. 図５における案内羽根の斜視図である。It is a perspective view of the guide blade | wing in FIG. 本発明の他の実施例を示す流体の吸い込み渦の発生防止装置の模式図である。It is a schematic diagram of the generation | occurrence | production prevention apparatus of the suction vortex of the fluid which shows the other Example of this invention. 図７の変形例を示す流体の吸い込み渦の発生防止装置の模式図である。FIG. 8 is a schematic diagram of a fluid suction vortex generation prevention device showing a modification of FIG. 7. 本発明の更なる他の実施例を示す流体の吸い込み渦の発生防止装置の模式図である。It is a schematic diagram of the generation | occurrence | production prevention apparatus of the suction vortex of the fluid which shows the further another Example of this invention. 図９に示す流体の吸い込み渦の発生防止装置の案内羽根の斜視図である。FIG. 10 is a perspective view of a guide vane of the fluid suction vortex generation preventing device shown in FIG. 9. 図９の変形例を示す図である。It is a figure which shows the modification of FIG. 図１１の案内羽根の上面図である。It is a top view of the guide blade | wing of FIG. 本発明の流体溜め部の中心位置から偏芯させた位置に配置する流出流路を有する流体の吸い込み渦の発生防止装置の上面図である。It is a top view of the generation | occurrence | production prevention apparatus of the suction vortex of the fluid which has an outflow channel arrange | positioned in the position eccentric from the center position of the fluid reservoir part of this invention. 図１３は流体の吸い込み渦の発生防止装置の模式図である。FIG. 13 is a schematic view of a fluid suction vortex generation prevention device. 従来の鉄鋼プロセスの転炉の模式図である。It is a schematic diagram of the converter of the conventional steel process. 従来の流体の吸い込み渦の発生防止方法（その１）を示す図である。It is a figure which shows the generation | occurrence | production prevention method (the 1) of the suction vortex of the conventional fluid. 従来の流体の吸い込み渦の発生防止方法（その２）を示す図である。It is a figure which shows the generation | occurrence | production prevention method (the 2) of the conventional fluid suction | inhalation vortex. 従来の流体の吸い込み渦の発生防止方法（その３）を示す図である。It is a figure which shows the generation | occurrence | production prevention method (the 3) of the suction vortex of the conventional fluid. 従来の流体の吸い込み渦の発生防止方法（その４）を示す図である。It is a figure which shows the generation | occurrence | production prevention method (the 4) of the suction vortex of the conventional fluid. 従来の流体の吸い込み渦の発生防止方法（その５）を示す図である。It is a figure which shows the conventional generation | occurrence | production prevention method (the 5) of the suction vortex of the fluid. 従来の流体の吸い込み渦の発生防止方法（その６）を示す図である。It is a figure which shows the conventional generation | occurrence | production prevention method (the 6) of the suction vortex of the fluid.

符号の説明Explanation of symbols

１，２１，４１，５１ 流体溜め部
２，２２，４２，５２，６４ 流出流路
３，１１，２３，４３，５５，６５ 案内羽根
４，２６，４４，６６ 流出すべき流体物
５，２７，４５，６７ 浮遊流体物
６ 流体の供給口
７ 流出流路の中心線
７′ 流出流路の中心線と平行な平行線
８ 流出流路の内周面
１２ 係合突起
２４ 支持棒
２５ 固定具
３１ 円筒形状の流出流路
３２ 円筒形状の案内羽根
５３，６２ 流体溜め部の底部
５４，６３ 段部
６１ 円筒形状の流体溜め部
６８ 流体溜め部の中心点
６９ 円筒形状の流出流路の中心点 1, 21, 41, 51 Fluid reservoir 2, 22, 42, 52, 64 Outflow passage 3, 11, 23, 43, 55, 65 Guide vanes 4, 26, 44, 66 Fluid to be discharged 5,27 , 45, 67 Floating fluid 6 Fluid supply port 7 Outflow channel center line 7 'Parallel line parallel to the outflow channel center line 8 Inner peripheral surface of the outflow channel 12 Engaging projection 24 Support rod 25 Fixing tool DESCRIPTION OF SYMBOLS 31 Cylindrical outflow channel 32 Cylindrical guide vane 53, 62 Bottom part of fluid reservoir 54, 63 Step part 61 Cylindrical fluid reservoir 68 Center point of fluid reservoir 69 Center point of cylindrical outlet channel

Claims (13)

流出すべき流体物の上部に該流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体を入れた流体溜め部の、前記流出すべき流体物の流出流路と前記流体溜め部との境界部に、該流出流路方向に長さを有する案内羽根を配置し、流体の吸い込み渦の発生を防止し、前記浮遊流体物が流出流路へ流出することを防止することを特徴とする流体の吸い込み渦の発生防止方法。   An outflow passage for the fluid to be flowed out and a fluid reservoir of a fluid reservoir in which a fluid in which a floating fluid to be prevented from mixing at the time of outflow of the fluid is placed in the upper part of the fluid to be flowed out A guide vane having a length in the direction of the outflow channel is disposed at the boundary of the flow path to prevent generation of a fluid suction vortex and to prevent the floating fluid from flowing out to the outflow channel. To prevent the generation of suction vortices. 流出すべき流体物の上部に該流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体を入れた流体溜め部の、前記流出すべき流体物の流出流路中に、該流出流路方向に長さを有する案内羽根を配置し、流体の吸い込み渦の発生を防止し、前記浮遊流体物が流出流路へ流出することを防止することを特徴とする流体の吸い込み渦の発生防止方法。   The outflow of the fluid to be discharged in the fluid reservoir of the fluid reservoir in which the fluid in which the floating fluid to be prevented from being mixed at the time of the outflow of the fluid is placed in the upper part of the fluid to be discharged A guide vane having a length in the direction of the road is arranged to prevent the generation of a fluid suction vortex and to prevent the floating fluid from flowing out to the outflow passage. Method. 請求項２記載の流体の吸い込み渦の発生防止方法において、前記流出流路は、該流出流路の内周面がテーパ角０°〜８５°を有する円筒形または漏斗形の流出流路であり、前記案内羽根は前記流出流路の形状に対応した径を有することを特徴とする流体の吸い込み渦の発生防止方法。   3. The method of preventing generation of a fluid suction vortex according to claim 2, wherein the outflow channel is a cylindrical or funnel type outflow channel having an inner peripheral surface of the outflow channel having a taper angle of 0 ° to 85 °. The guide vane has a diameter corresponding to the shape of the outflow channel, and a method for preventing the generation of a fluid suction vortex. 請求項２記載の流体の吸い込み渦の発生防止方法において、前記案内羽根の上下位置を調整可能にすることを特徴とする流体の吸い込み渦の発生防止方法。   3. The method for preventing generation of a fluid suction vortex according to claim 2, wherein the vertical position of the guide vane is adjustable. （ａ）流出させるべき流体物の上部に前記流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体溜め部と、
（ｂ）該流体溜め部の底部に形成される流出流路と、
（ｃ）該流出流路と前記流体溜め部との境界部に前記流出流路方向に長さを有する案内羽根とを具備することを特徴とする流体の吸い込み渦の発生防止装置。 (A) a fluid reservoir in which a floating fluid to be prevented from being mixed at the time of the outflow of the fluid is floated above the fluid to be discharged;
(B) an outflow channel formed at the bottom of the fluid reservoir;
(C) A fluid suction vortex generation preventing device comprising a guide vane having a length in the direction of the outflow channel at a boundary between the outflow channel and the fluid reservoir. 請求項５記載の流体の吸い込み渦の発生防止装置において、前記流出流路に段部を設け、該段部に前記案内羽根を保持することを特徴とする流体の吸い込み渦の発生防止装置。   6. The fluid suction vortex generation preventing apparatus according to claim 5, wherein a step portion is provided in the outflow passage, and the guide blade is held in the step portion. （ａ）流出させるべき流体物の上部に前記流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体溜め部と、
（ｂ）該流体溜め部の底部に形成され、内周面がテーパ角０°〜８５°を有する円筒形または漏斗形の流出流路と、
（ｃ）該流出流路の形状に対応した径を有するとともに、この流出流路方向に長さを有し、前記流出流路に装着される案内羽根とを具備することを特徴とする流体の吸い込み渦の発生防止装置。 (A) a fluid reservoir in which a floating fluid to be prevented from being mixed at the time of the outflow of the fluid is floated above the fluid to be discharged;
(B) a cylindrical or funnel-shaped outflow passage formed at the bottom of the fluid reservoir and having an inner peripheral surface with a taper angle of 0 ° to 85 °;
(C) having a diameter corresponding to the shape of the outflow channel, and having a length in the direction of the outflow channel, and a guide vane attached to the outflow channel, A device that prevents the generation of suction vortices. （ａ）流出すべき流体物の上部に前記流体物の流出時に混入を阻止すべき浮遊流体物が浮上した流体溜め部と、
（ｂ）該流体溜め部の底部に形成され、内周面がテーパ角０°〜８５°を有する円筒形または漏斗形の流出流路と、
（ｃ）該流出流路の形状に対応した径を有するとともに、この流出流路方向に長さを有し、前記流出流路に装着される案内羽根と、
（ｄ）該案内羽根の固定具とを具備することを特徴とする流体の吸い込み渦の発生防止装置。 (A) a fluid reservoir in which a floating fluid that should be prevented from being mixed when the fluid flows out above the fluid that should flow out;
(B) a cylindrical or funnel-shaped outflow passage formed at the bottom of the fluid reservoir and having an inner peripheral surface with a taper angle of 0 ° to 85 °;
(C) having a diameter corresponding to the shape of the outflow channel, having a length in the outflow channel direction, and a guide vane attached to the outflow channel;
(D) A fluid suction vortex generation preventing device comprising the guide vane fixture. 請求項５から８の何れか１項記載の流体の吸い込み渦の発生防止装置において、前記案内羽根の羽根の数が２〜８枚であることを特徴とする流体の吸い込み渦の発生防止装置。   9. The fluid suction vortex generation prevention device according to claim 5, wherein the number of blades of the guide blade is 2 to 8. 請求項７、８又は９記載の流体の吸い込み渦の発生防止装置において、前記案内羽根の上端の回転径と下端回転径と間の差と前記流出流路の中心線とのなす角が０°〜８５°であることを特徴とする流体の吸い込み渦の発生防止装置。   10. The fluid suction vortex generation prevention device according to claim 7, 8, or 9, wherein an angle formed between a difference between an upper end rotation diameter and a lower end rotation diameter of the guide vane and a center line of the outflow channel is 0 °. A device for preventing the generation of a fluid suction vortex, characterized by an angle of ˜85 °. 請求項７から１０の何れか１項記載の流体の吸い込み渦の発生防止装置において、前記固定装置は前記案内羽根の上下方向の位置調整手段を具備することを特徴とする流体の吸い込み渦の発生防止装置。   11. The fluid suction vortex generation prevention device according to claim 7, wherein the fixing device includes a vertical position adjustment means of the guide vane. Prevention device. 請求項５から１１の何れか１項記載の流体の吸い込み渦の発生防止装置において、前記流体溜め部が円筒形状又は角筒形状であることを特徴とする流体の吸い込み渦の発生防止装置。   12. The fluid suction vortex generation prevention device according to claim 5, wherein the fluid reservoir portion has a cylindrical shape or a rectangular tube shape. 請求項１２記載の流体の吸い込み渦の発生防止装置において、前記流出流路を前記円筒形状又は角筒形状の流体溜め部の中心部から偏芯させた位置に配置することを特徴とする流体の吸い込み渦の発生防止装置。   13. The fluid suction vortex generation preventing apparatus according to claim 12, wherein the outflow passage is arranged at a position eccentric from a central portion of the cylindrical or square cylindrical fluid reservoir. A device that prevents the generation of suction vortices.
JP2005071150A 2004-03-24 2005-03-14 Method and apparatus for preventing occurrence of intake eddy of fluid Withdrawn JP2005307344A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020111772A (en) * 2019-01-10 2020-07-27 日本製鉄株式会社 Method of preventing converter slag from flowing out

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020111772A (en) * 2019-01-10 2020-07-27 日本製鉄株式会社 Method of preventing converter slag from flowing out
JP7206923B2 (en) 2019-01-10 2023-01-18 日本製鉄株式会社 Method for preventing outflow of slag in converter

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