JP4648792B2 - Fluid mixing apparatus and fluid mixing method - Google Patents

Fluid mixing apparatus and fluid mixing method Download PDF

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JP4648792B2
JP4648792B2 JP2005222850A JP2005222850A JP4648792B2 JP 4648792 B2 JP4648792 B2 JP 4648792B2 JP 2005222850 A JP2005222850 A JP 2005222850A JP 2005222850 A JP2005222850 A JP 2005222850A JP 4648792 B2 JP4648792 B2 JP 4648792B2
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conduit
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正徳 吉川
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Noritake Co Ltd
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本発明は、流体を混合する装置及び方法に関し、特にスチームと水の混合に適した混合装置及び混合方法に関する。   The present invention relates to an apparatus and a method for mixing fluid, and more particularly to a mixing apparatus and a mixing method suitable for mixing steam and water.

２種の流体ＡとＢ、例えばスチームと水、とを混合する装置として、図１９及び図２０に示すような構造の装置が知られている。図１９及び図２０に示す流体混合装置１１においては、流体Ａを供給する第１導管１２の周囲には流体Ｂを供給するチャンバ１４が設けられており、流体Ｂは、第１導管１２の外側から第１導管１２に設けられた孔１５を通じて流体Ａに混入される。このような構造の混合装置は、例えば特許文献１及び特許文献２に開示されている。図１９に示す混合装置においては、流体Ｂは流体Ａの流れ方向に対して垂直方向に供給され、図２０に示す混合装置においては、流体Ｂは流体Ａの流れ方向と同一方向に供給される。すなわち、これらの混合装置においては、第１導管１２中に流体Ｂを供給するための孔１５が第１導管１２の外側から内側へ向かう方向は、第１導管１２の軸方向に平行な断面において、第１導管１２に対して垂直方向であるか、又は流体Ａの下流（二次）側方向である。   As an apparatus for mixing two kinds of fluids A and B, for example, steam and water, an apparatus having a structure as shown in FIGS. 19 and 20 is known. In the fluid mixing apparatus 11 shown in FIGS. 19 and 20, a chamber 14 for supplying a fluid B is provided around the first conduit 12 for supplying the fluid A, and the fluid B is disposed outside the first conduit 12. To the fluid A through the hole 15 provided in the first conduit 12. For example, Patent Document 1 and Patent Document 2 disclose a mixing apparatus having such a structure. In the mixing apparatus shown in FIG. 19, the fluid B is supplied in a direction perpendicular to the flow direction of the fluid A. In the mixing apparatus shown in FIG. 20, the fluid B is supplied in the same direction as the flow direction of the fluid A. . That is, in these mixing apparatuses, the direction in which the hole 15 for supplying the fluid B into the first conduit 12 is directed from the outside to the inside of the first conduit 12 is in a cross section parallel to the axial direction of the first conduit 12. , Perpendicular to the first conduit 12 or downstream (secondary) of the fluid A.

この他に、２種の流体を混合する装置として、特許文献３〜７に示すような形態の流体混合装置が知られている。   In addition, as a device for mixing two kinds of fluids, a fluid mixing device having a form as shown in Patent Documents 3 to 7 is known.

実開昭６２−９０７３４号公報Japanese Utility Model Publication No. 62-90734 特開２０００−２１３６８１号公報JP 2000-213681 A 特開平７−１１６４８６号公報JP 7-116486 A 特表２００５−５０３２５４号公報JP 2005-503254 Gazette 特開昭６２−２８９２２６号公報JP-A-62-289226 実開昭６２−６２８２７号公報Japanese Utility Model Publication No. 62-62827 特開昭６３−１１６０３２号公報JP-A-63-116032

水（流体Ａ）とスチーム（流体Ｂ）を混合する場合に、図１９に示すような流体混合装置を使用して水の流路方向に対して垂直にスチームを供給すると、大きな衝撃音（ウォータハンマ音）が発生し、騒音となっている。また、発生した音には非常に耳障りな機械的破裂音が含まれており、図１９に示すような流体混合装置においては、混合時に発生する音を低減することが課題となっている。そこで、混合装置に遮音措置を施す、又は図２０に示すような流体混合装置を使用すると、騒音値は図１９に示すような混合装置に比べれば低減されるが、満足できる結果は得られていない。   When mixing water (fluid A) and steam (fluid B), if steam is supplied perpendicularly to the flow direction of the water using a fluid mixing apparatus as shown in FIG. Hammering noise is generated and it is noisy. Further, the generated sound includes a very disturbing mechanical plosive sound. In the fluid mixing apparatus as shown in FIG. 19, it is a problem to reduce the sound generated during mixing. Therefore, when a sound insulation measure is applied to the mixing device or a fluid mixing device as shown in FIG. 20 is used, the noise value is reduced as compared with the mixing device as shown in FIG. 19, but satisfactory results are obtained. Absent.

本発明の目的は、スチームのような高圧流体を混合する時に騒音を発生させない流体混合装置及びその混合方法を提供することである。   An object of the present invention is to provide a fluid mixing device that does not generate noise when mixing a high-pressure fluid such as steam, and a mixing method thereof.

本発明においては、導管に穿設した孔を通じて高圧流体を導管中に流入させる場合に、導管を流れる流体の流れに対向するように高圧流体を流入させることにより、発生する音を低減させる。   In the present invention, when high-pressure fluid is introduced into a conduit through a hole drilled in the conduit, the generated sound is reduced by introducing the high-pressure fluid so as to oppose the flow of fluid flowing through the conduit.

本発明の第１視点の基本形態によれば、第１流体を導く第１導管と、第１導管の外周部の少なくとも一部にスチームを供給するチャンバと、チャンバにスチームを導く第２導管と、を有し、第１導管は、チャンバが面する部分に、スチームを第１流体に混入させるために穿設され、軸方向及び周方向に配設された複数の孔を有し、第１導管の軸方向に平行な断面において、孔が第１導管の外から内へ向かう方向は、第１流体の上流側であり、孔は、孔の中心を通る線とチャンバの中心を通る線とのなす角度が９０°のときと比べて、スチーム供給時に発生する音が低下するように、軸方向に対して傾斜している（ただし当該角度が７０°以上９０°未満は除く）流体混合装置を提供する。 According to the basic form of the first aspect of the present invention, a first conduit for guiding a first fluid, a chamber for supplying steam to at least a part of the outer periphery of the first conduit, and a second conduit for guiding steam to the chamber, The first conduit has a plurality of holes that are formed in the portion facing the chamber to mix steam with the first fluid and are disposed in the axial direction and the circumferential direction . in a cross section parallel to the axial direction of the conduit, the direction hole is directed from the outside to the inside of the first conduit, upstream der of the first fluid is, pores, a line passing through the center of the line and the chamber passing through the center of the hole Compared to the case where the angle formed with the angle is 90 °, the fluid mixing is inclined with respect to the axial direction so that the sound generated during the steam supply is reduced (however, the angle is not greater than 70 ° and less than 90 °) Providing equipment.

本発明の第２視点の基本形態によれば、第１流体を導く第１導管と、第１導管に内設され、第１導管内にスチームを供給するチャンバと、チャンバにスチームを導く第２導管と、を有し、チャンバは、スチームを第１流体に混入させるために穿設され、軸方向及び周方向に配設された複数の孔を有し、第１導管の軸方向に平行な断面において、孔がチャンバの内から外へ向かう方向は、第１流体の上流側であり、孔は、孔の中心を通る線とチャンバの中心を通る線とのなす角度が９０°のときと比べて、スチーム供給時に発生する音が低下するように、軸方向に対して傾斜している（ただし当該角度が７０°以上９０°未満は除く）流体混合装置を提供する。 According to the basic form of the second aspect of the present invention, a first conduit for guiding a first fluid, a chamber provided in the first conduit for supplying steam into the first conduit, and a second for guiding steam to the chamber. A chamber, the chamber being perforated to mix the steam with the first fluid, and having a plurality of axially and circumferentially disposed holes parallel to the axial direction of the first conduit in cross section, the direction hole is directed from inside to outside of the chamber, upstream der of the first fluid is, pores, when the angle between the line passing through the center of the line and the chamber passing through the center of the hole is 90 ° The fluid mixing device is inclined with respect to the axial direction (however, the angle is not greater than 70 ° and less than 90 °) so that the sound generated when supplying steam is reduced .

本発明の第３視点の基本形態によれば、第１流体とスチームとを混合する流体混合方法において、第１流体を導く第１導管の外側から、第１導管に穿設し、軸方向及び周方向に配設した複数の孔を経由して、第１導管の中心を通る線に対するスチームの流入角度が９０°のときと比べてスチーム供給時に発生する音が低下するように第１流体の上流側に向かって傾斜させて（ただし流入角度が７０°以上９０°未満は除く）、スチームを第１流体に供給する流体混合方法を提供する。 According to the basic form of the third aspect of the present invention, in the fluid mixing method of mixing the first fluid and the steam , the first conduit is perforated from the outside of the first conduit for guiding the first fluid, and the axial direction and Through the plurality of holes arranged in the circumferential direction, the first fluid is reduced so that the sound generated at the time of steam supply is lower than when the steam inflow angle with respect to the line passing through the center of the first conduit is 90 °. The fluid mixing method is provided in which the steam is supplied to the first fluid by being inclined toward the upstream side (except for an inflow angle of 70 ° or more and less than 90 °) .

第３視点の好ましい形態によれば、第１導管内の流体に旋回流が生じるように、第１導管の軸方向に垂直な断面において第１導管面に対し同一方向に傾斜をつけて第２流体を供給する。   According to a preferred form of the third aspect, the second conduit is inclined in the same direction with respect to the first conduit surface in a cross section perpendicular to the axial direction of the first conduit so that a swirl flow is generated in the fluid in the first conduit. Supply fluid.

本発明の第４視点の基本形態によれば、第１流体とスチームとを混合する流体混合方法において、第１流体を導く第１導管の内側に配置したスチームを供給するチャンバに穿設し、軸方向及び周方向に配設した複数の孔を経由して、チャンバの中心を通る線に対するスチームの流入角度が９０°のときと比べてスチーム供給時に発生する音が低下するように第１流体の上流側に向かって傾斜させて（ただし流入角度が７０°以上９０°未満は除く）、スチームを第１流体に供給する流体混合方法を提供する。 According to the basic form of the fourth aspect of the present invention, in the fluid mixing method for mixing the first fluid and the steam , the steam is disposed inside the first conduit for guiding the first fluid, and the chamber is provided with a hole . The first sound is generated so that the sound generated at the time of steam supply is reduced through a plurality of holes arranged in the axial direction and the circumferential direction as compared with the case where the inflow angle of steam with respect to the line passing through the center of the chamber is 90 ° . Provided is a fluid mixing method in which steam is inclined toward the upstream side of the fluid (however, the inflow angle is not less than 70 ° and less than 90 °), and steam is supplied to the first fluid.

第４視点の好ましい形態によれば、第１導管内の流体に旋回流が生じるように、第１導管の軸方向に垂直な断面においてチャンバ面に対し同一方向に傾斜をつけて第２流体を供給する。   According to a preferred form of the fourth aspect, the second fluid is inclined in the same direction with respect to the chamber surface in a cross section perpendicular to the axial direction of the first conduit so that a swirl flow is generated in the fluid in the first conduit. Supply.

第３視点及び第４視点の好ましい形態によれば、第１流体を水とし、第２流体をスチームとする。   According to a preferred form of the third and fourth viewpoints, the first fluid is water and the second fluid is steam.

本発明の流体混合装置及び流体混合方法によれば、低圧流体と高圧流体を混合する時に発生する音の大きさを、混合性能を低下させることなく低減することができる。例えば、水とスチームを混合する場合に、混合装置から発生する音を小さくすることができる。また、本発明によれば、スチームと水との不快な干渉音やスチーム停止時のウォータハンマ現象も低減することができる。   According to the fluid mixing device and the fluid mixing method of the present invention, it is possible to reduce the volume of sound generated when mixing a low-pressure fluid and a high-pressure fluid without reducing the mixing performance. For example, when water and steam are mixed, the sound generated from the mixing device can be reduced. Further, according to the present invention, it is possible to reduce unpleasant interference sound between steam and water and a water hammer phenomenon when the steam is stopped.

本発明の第１実施形態に係る流体混合装置及び流体混合方法について説明する。図１は、第１導管に平行な断面における流体混合装置の（投影）断面図である。ここで、流体Ａ（第１流体）は水のような低圧流体を示し、流体Ｂ（第２流体）はスチームのような高圧流体を示す。図１に示す形態においては、流体Ａは第１導管２中を左から右へ流れており、第１導管２の一部には、流体Ｂを第１導管中に流入させるために孔５が開けられている。流体Ｂを供給するためのチャンバ４は、孔５部分に接しており、流体Ｂは、流体Ａの流路方向に対向するように供給される。すなわち、孔５が第１導管２の外から内へ向かう方向は、流体Ａの上流（一次）側を向いている。なお、本発明においてチャンバとは、流体Ｂを供給するための部分のことをいい、導管の一部であっても構わない。   A fluid mixing apparatus and a fluid mixing method according to a first embodiment of the present invention will be described. FIG. 1 is a (projection) cross-sectional view of a fluid mixing device in a cross-section parallel to a first conduit. Here, the fluid A (first fluid) indicates a low-pressure fluid such as water, and the fluid B (second fluid) indicates a high-pressure fluid such as steam. In the configuration shown in FIG. 1, the fluid A flows from the left to the right in the first conduit 2, and a part of the first conduit 2 has a hole 5 for allowing the fluid B to flow into the first conduit. Opened. The chamber 4 for supplying the fluid B is in contact with the hole 5 portion, and the fluid B is supplied so as to oppose the flow path direction of the fluid A. That is, the direction in which the hole 5 goes from the outside to the inside of the first conduit 2 faces the upstream (primary) side of the fluid A. In the present invention, the chamber refers to a portion for supplying the fluid B, and may be a part of a conduit.

図１の形態と異なる形態を図２及び図３に示す。図２に示す形態においては、チャンバ４は、第１導管２の外周の少なくとも一部を取り囲むように形成され、第１導管２と二重管を構成している。孔５は、チャンバ４に面している部分全体に形成されており、いずれの孔も第１導管２の内面側が流体Ａの上流側を向いている。図３に示す形態においては、流体Ｂを供給する第２導管３と第１導管２とが二重管構造になっており、チャンバ４が第２導管３の一部を形成している。孔５は、第１導管２の内面側が流体Ａの上流側を向くように開けられており、流体Ｂは、第１導管２中を流れる流体Ａの方向とは逆向きに第２導管３中を移動する。   A form different from the form of FIG. 1 is shown in FIGS. In the form shown in FIG. 2, the chamber 4 is formed so as to surround at least a part of the outer periphery of the first conduit 2 and constitutes a double tube with the first conduit 2. The hole 5 is formed in the entire portion facing the chamber 4, and the inner surface side of the first conduit 2 faces the upstream side of the fluid A in any hole. In the form shown in FIG. 3, the second conduit 3 for supplying the fluid B and the first conduit 2 have a double tube structure, and the chamber 4 forms a part of the second conduit 3. The hole 5 is opened so that the inner surface side of the first conduit 2 faces the upstream side of the fluid A, and the fluid B is in the second conduit 3 in the direction opposite to the direction of the fluid A flowing in the first conduit 2. To move.

図４は、第１実施形態に係る第１導管２の軸方向に垂直な断面の投影図を示す。図４（ａ）に示す形態においては、孔５は第１導管２の中心方向を向いているが、図４（ｂ）に示す形態においては、孔５は、円周方向（周部）に対し同一方向を向く（傾斜する）ように形成されている。図４（ｂ）のような形態によれば、孔５を通じて第１導管２に流入する流体Ｂにより、第１導管２内を流れる流体は自己旋回流を生じてスムーズに混合及び移送することができる。   FIG. 4 is a projection view of a cross section perpendicular to the axial direction of the first conduit 2 according to the first embodiment. In the form shown in FIG. 4 (a), the hole 5 faces the center direction of the first conduit 2. However, in the form shown in FIG. 4 (b), the hole 5 extends in the circumferential direction (circumferential portion). It is formed so as to face the same direction (tilt). 4 (b), the fluid B flowing into the first conduit 2 through the hole 5 causes the fluid flowing in the first conduit 2 to generate a self-swirl flow and smoothly mix and transfer. it can.

図５は、第１実施形態に係る第１導管２の透視斜視図を示す。図５（ａ）は、軸方向に平行な断面の形態が図２に示す形態、軸方向に垂直な断面の形態が図４（ａ）に示す形態の斜視図であり、図５（ｂ）は、軸方向に平行な断面の形態が図２に示す形態、軸方向に垂直な断面の形態が図４（ｂ）に示す形態の斜視図である。図５（ａ）に示す形態では、孔５は、第１導管２の内面側が流体Ａの上流方向を向くように傾斜すると共に、流体Ａの流路の中心方向を向いている。図５（ｂ）に示す形態では、孔５は、第１導管２の内面側が流体Ａの上流方向を向くように傾斜すると共に、第１導管２の円周（外周）方向に対し同一方向に傾斜している。すなわち、流体Ｂは第１導管２の軸方向に対してらせん方向に供給される。   FIG. 5 shows a perspective view of the first conduit 2 according to the first embodiment. FIG. 5A is a perspective view in which the cross-sectional form parallel to the axial direction is the form shown in FIG. 2, and the cross-sectional form perpendicular to the axial direction is the form shown in FIG. 4A. FIG. 4 is a perspective view of a form in which the cross section parallel to the axial direction is shown in FIG. 2 and a form in a cross section perpendicular to the axial direction is shown in FIG. In the form shown in FIG. 5A, the hole 5 is inclined so that the inner surface side of the first conduit 2 faces the upstream direction of the fluid A and also faces the center direction of the flow path of the fluid A. In the form shown in FIG. 5 (b), the hole 5 is inclined so that the inner surface side of the first conduit 2 faces the upstream direction of the fluid A, and in the same direction as the circumferential (outer periphery) direction of the first conduit 2. Inclined. That is, the fluid B is supplied in a spiral direction with respect to the axial direction of the first conduit 2.

第１導管２の軸方向に平行な（投影）断面において、流体Ｂの流入角度、すなわち孔５の傾斜角度、は、流体Ａの流れに対して好ましくは２０°〜７０°、より好ましくは３０°〜６０°、さらに好ましくは４０°〜５０°である。例えば、図１に示す（投影）断面図においては、孔５の中心を通る線と第１導管２の中心を通る線とのなす角αが、上記角度範囲にあると好ましい。それは、流体Ｂの流入角度が低角になりすぎると、孔５が長くなり、装置の加工が困難になると共に、流体Ｂがスムーズに導入されなくなるためである。また、孔５の角度が高角になりすぎると、従来の混合装置のように音が大きくなるためである。   In the (projection) cross section parallel to the axial direction of the first conduit 2, the inflow angle of the fluid B, that is, the inclination angle of the hole 5, is preferably 20 ° to 70 °, more preferably 30 to the flow of the fluid A. The angle is from 60 ° to 60 °, more preferably from 40 ° to 50 °. For example, in the (projection) sectional view shown in FIG. 1, it is preferable that an angle α formed by a line passing through the center of the hole 5 and a line passing through the center of the first conduit 2 is in the above angle range. This is because if the inflow angle of the fluid B becomes too low, the holes 5 become long, making it difficult to process the apparatus, and the fluid B cannot be smoothly introduced. Moreover, if the angle of the hole 5 becomes too high, the sound becomes loud like a conventional mixing device.

また、第１導管２の軸方向に垂直な（投影）断面において、流体Ｂの流入角度は、すなわち孔５の傾斜角度は、第１導管２の中心を通る線に対して好ましくは０°〜５０°、より好ましくは１０°〜４０°、さらに好ましくは２０°〜３０°である。例えば、図４（ｂ）に示す（投影）断面図においては、第１導管２の外面（外周）と孔の中心を通る線との交点における第１導管２の中心を通る線と孔５の中心を通る線とのなす角βが、上記角度範囲にあると好ましい。   Further, in the (projection) cross section perpendicular to the axial direction of the first conduit 2, the inflow angle of the fluid B, that is, the inclination angle of the hole 5 is preferably 0 ° to the line passing through the center of the first conduit 2. The angle is 50 °, more preferably 10 ° to 40 °, and still more preferably 20 ° to 30 °. For example, in the (projection) cross-sectional view shown in FIG. 4B, the line passing through the center of the first conduit 2 and the hole 5 at the intersection of the outer surface (outer periphery) of the first conduit 2 and the line passing through the center of the hole. It is preferable that the angle β formed with the line passing through the center is in the above angle range.

本発明の第２実施形態に係る流体混合装置及び流体混合方法について説明する。第１実施形態においては、低圧流体Ａの導管の外側から高圧流体Ｂを低圧流体Ａに導入させたが、第２の実施形態においては、低圧流体Ａの導管の内側から高圧流体Ｂを低圧流体Ａに導入させる。図６及び図７は、第１導管の軸方向に平行な断面における流体混合装置の（投影）断面図である。図６に示す形態においては、流体Ｂを供給するチャンバ４を覆うように、流体Ａを供給する第１導管２が形成され、二重管を構成している。図７に示す形態においては、第１導管２の内部に第２導管３が配置され、二重管を構成している。図６及び図７のいずれの形態においても、流体Ｂを流体Ａ中に流入させる孔５は、チャンバ４に形成され、第１実施形態のように流体Ａの上流側を向いている。すなわち、流体Ｂは、チャンバ４の内側から外側に向かって流体Ａの上流側方向に供給される。また、チャンバ４の軸方向に垂直な断面において、孔５は、図４（ａ）に示すようにチャンバ４の中心を向くように形成することもできれば、図４（ｂ）に示すようにチャンバ４の周方向（周部）に対し同一方向に傾斜するように形成することもできる。   A fluid mixing apparatus and a fluid mixing method according to a second embodiment of the present invention will be described. In the first embodiment, the high pressure fluid B is introduced into the low pressure fluid A from the outside of the conduit of the low pressure fluid A. However, in the second embodiment, the high pressure fluid B is introduced from the inside of the conduit of the low pressure fluid A into the low pressure fluid. A is introduced. 6 and 7 are (projected) sectional views of the fluid mixing device in a section parallel to the axial direction of the first conduit. In the form shown in FIG. 6, the first conduit 2 that supplies the fluid A is formed so as to cover the chamber 4 that supplies the fluid B, and constitutes a double pipe. In the form shown in FIG. 7, the 2nd conduit | pipe 3 is arrange | positioned inside the 1st conduit | pipe 2, and comprises the double tube | pipe. 6 and 7, the hole 5 for allowing the fluid B to flow into the fluid A is formed in the chamber 4 and faces the upstream side of the fluid A as in the first embodiment. That is, the fluid B is supplied in the upstream direction of the fluid A from the inside to the outside of the chamber 4. Further, in the cross section perpendicular to the axial direction of the chamber 4, the hole 5 can be formed so as to face the center of the chamber 4 as shown in FIG. 4A, or as shown in FIG. It can also form so that it may incline in the same direction with respect to 4 circumferential directions (circumferential part).

チャンバ４の軸方向に平行な（投影）断面において、流体Ｂの流入角度、すなわち孔５の傾斜角度、は、流体Ａの流路方向に対して、好ましくは２０°〜７０°、より好ましくは３０°〜６０°、さらに好ましくは４０°〜５０°である。例えば、図６及び図７に示す（投影）断面図において、孔５の中心を通る線とチャンバ４の中心を通る線とのなす角が、上記角度範囲にあると好ましい。   In the (projection) cross section parallel to the axial direction of the chamber 4, the inflow angle of the fluid B, that is, the inclination angle of the hole 5, is preferably 20 ° to 70 °, more preferably with respect to the flow path direction of the fluid A. It is 30 ° to 60 °, more preferably 40 ° to 50 °. For example, in the (projection) cross-sectional views shown in FIGS. 6 and 7, it is preferable that an angle formed by a line passing through the center of the hole 5 and a line passing through the center of the chamber 4 is in the above angle range.

また、チャンバ４の軸方向に垂直な（投影）断面において、流体Ｂの流入角度、すなわち孔５の傾斜角度、は、チャンバ４の中心を通る線に対して好ましくは０°〜５０°、より好ましくは１０°〜４０°、さらに好ましくは２０°〜３０°である。例えば、当該（投影）断面図において、孔５の中心を通る線とチャンバ４の外面との交点におけるチャンバ４の中心を通る線と孔５の中心を通る線とのなす角が、上記角度範囲にあると好ましい。   Further, in the (projection) cross section perpendicular to the axial direction of the chamber 4, the inflow angle of the fluid B, that is, the inclination angle of the hole 5 is preferably 0 ° to 50 ° with respect to a line passing through the center of the chamber 4. Preferably they are 10 degrees-40 degrees, More preferably, they are 20 degrees-30 degrees. For example, in the (projected) sectional view, an angle formed by a line passing through the center of the chamber 4 and a line passing through the center of the hole 5 at the intersection of the line passing through the center of the hole 5 and the outer surface of the chamber 4 It is preferable that

第１実施形態及び第２実施形態において、混合流体を導く第１導管の内径は、例えば図８（ａ）に示すように一定であっても良いし、又は図８（ｂ）に示すように拡径ないし図８（ｃ）に示すように縮径させることもできる。例えば、混合させる流体Ｂの量が多い場合等において、急激な内圧上昇又は逆流を防止するために、下流（二次）側に向かって全体的に又は部分的に第１導管の内径を拡径させもよい。   In the first and second embodiments, the inner diameter of the first conduit that guides the mixed fluid may be constant, for example, as shown in FIG. 8 (a), or as shown in FIG. 8 (b). The diameter can be increased or reduced as shown in FIG. For example, when the amount of the fluid B to be mixed is large, the inner diameter of the first conduit is expanded in whole or in part toward the downstream (secondary) side in order to prevent a sudden increase in internal pressure or backflow. You may let them.

第１導管又はチャンバに設ける孔の数及び径は、混合する各流体の流量、圧力に応じて適宜設定する。   The number and diameter of the holes provided in the first conduit or the chamber are appropriately set according to the flow rate and pressure of each fluid to be mixed.

本発明の流体混合装置について、従来の流体混合装置と騒音値及び昇音能力を比較した結果を実施例に示す。   About the fluid mixing apparatus of this invention, the result of having compared a conventional fluid mixing apparatus with the noise value and the sound raising capability is shown in an Example.

実施例１においては、図１９に示すように高圧流体を低圧流体に対し垂直に供給する装置（垂直流型）と図２に示すように高圧流体を低圧流体と対向するように供給する装置（逆斜流型）について騒音測定を行った。本実施例において使用した流体混合装置は、図２に示すような第１導管の一部の全周をチャンバで覆ったものであり、本発明の流体混合装置としては図８（ａ）に示す定径型と図８（ｂ）に示す拡径型の両型について測定を行った。定径型装置の寸法は、内径４０ｍｍであり、拡径型の寸法は、一次側内径４０ｍｍ、二次側内径６７ｍｍである。また、両型において、孔の径は５ｍｍであり、第１導管の軸方向に垂直な（投影）断面において、孔は、図４（ａ）に示すように第１導管の中心方向を向いている。また、当該（投影）断面において、孔は８個形成されている。図２に示すような第１導管の軸方向に平行な断面における孔の傾斜角度、すなわち孔の中心を通る線と第１導管の中心を通る線とのなす角、は３０°である。図４に示すような第１導管の軸方向に垂直な断面における孔の群を１列とすると、孔は軸方向に１０列形成されており、第１導管全体における全部の孔の数は、１０列×８個／列＝８０個である。隣接する列同士は、孔が軸方向に直線的に並ばないように、円周方向に回転するように角度を変えて互い違いに配置されている。また、第１導管とチャンバとの間には、スチーム緩衝材を配置している。   In the first embodiment, as shown in FIG. 19, an apparatus (vertical flow type) that supplies a high-pressure fluid perpendicularly to a low-pressure fluid and an apparatus (vertical flow type) that supplies a high-pressure fluid so as to face the low-pressure fluid as shown in FIG. Noise measurement was performed on the reverse mixed flow type). The fluid mixing device used in this example is a device in which the entire circumference of a part of the first conduit as shown in FIG. 2 is covered with a chamber. The fluid mixing device of the present invention is shown in FIG. 8 (a). Measurement was performed on both the fixed diameter type and the enlarged diameter type shown in FIG. The fixed-diameter apparatus has an inner diameter of 40 mm, and the expanded-diameter apparatus has a primary-side inner diameter of 40 mm and a secondary-side inner diameter of 67 mm. In both types, the diameter of the hole is 5 mm, and in the (projection) cross section perpendicular to the axial direction of the first conduit, the hole faces the center direction of the first conduit as shown in FIG. Yes. In the (projected) cross section, eight holes are formed. The inclination angle of the hole in the cross section parallel to the axial direction of the first conduit as shown in FIG. 2, that is, the angle formed by the line passing through the center of the hole and the line passing through the center of the first conduit is 30 °. When a group of holes in a cross section perpendicular to the axial direction of the first conduit as shown in FIG. 4 is taken as one row, the holes are formed in 10 rows in the axial direction, and the total number of holes in the entire first conduit is as follows: 10 rows × 8 / row = 80. Adjacent rows are alternately arranged at different angles so as to rotate in the circumferential direction so that the holes do not line up in the axial direction. A steam cushioning material is disposed between the first conduit and the chamber.

使用した流体は、流体Ａとして水、流体Ｂとしてスチーム（１次蒸気圧力約０．５〜０．６ＭＰａ）である。騒音計は、混合装置から水平に１ｍ離れた位置に設置し、暗騒音は、水を供給するポンプ及びスチーム用ボイラーを運転している状態において測定した。水とスチームの混合条件は、スチーム供給量が５００ｋｇ／ｈ、水供給量が１７ｍ３／ｈ又は３０ｍ３／ｈである。図９及び図１０に、水供給量別の騒音値測定結果を示す。図９は、水供給量１７ｍ３／ｈ時の騒音値であり、図１０は水供給量３０ｍ３／ｈ時の騒音値である。これによれば、水供給量にかかわらず、垂直流型では、スチーム供給すると暗騒音時から約２０ｄＢ程増大するが、本発明の逆斜流型では、定径型及び拡径型のいずれの型においても５ｄＢ程度しか増大しなかった。これより、本発明の流体混合装置（逆斜流型）は、従来の垂直流型に比べて、スチーム供給時の音を低減できることが分かる。また、本発明の逆斜流型装置においては、スチーム供給時のハンチング現象やスチーム供給停止時のウォータハンマ現象は起こらなかった。 The fluid used is water as the fluid A and steam as the fluid B (primary vapor pressure of about 0.5 to 0.6 MPa). The sound level meter was installed at a position horizontally 1 m away from the mixing device, and the background noise was measured while operating a pump for supplying water and a steam boiler. The mixing conditions of water and steam are a steam supply amount of 500 kg / h and a water supply amount of 17 m 3 / h or 30 m 3 / h. 9 and 10 show the noise value measurement results for each water supply amount. FIG. 9 shows a noise value at a water supply rate of 17 m 3 / h, and FIG. 10 shows a noise value at a water supply rate of 30 m 3 / h. According to this, regardless of the amount of water supply, in the vertical flow type, when steam is supplied, it increases by about 20 dB from the time of background noise, but in the reverse mixed flow type of the present invention, either the constant diameter type or the enlarged diameter type is used. The mold increased only about 5 dB. From this, it can be seen that the fluid mixing device of the present invention (reverse mixed flow type) can reduce the sound at the time of steam supply compared to the conventional vertical flow type. In the reverse mixed flow type apparatus of the present invention, neither the hunting phenomenon at the time of steam supply nor the water hammer phenomenon at the stop of the steam supply occurred.

実施例２においては、高圧流体を低圧流体の流れ方向と同一方向に供給する図２０に示すような装置（正斜流型）と高圧流体を低圧流体の流れ方向と対向するように供給する図２に示すような本発明の装置（逆斜流型）について騒音測定を行った。使用した流体混合装置は、実施例１において使用した逆斜流定径型の装置であって、正斜流型と逆斜流型とは第１導管を配置する向きを変えることによって切り替えた。図１１〜図１３に、水供給量が１０ｍ３／ｈ、２０ｍ３／ｈ及び３０ｍ３／ｈのそれぞれの場合について、蒸気供給量を５０ｋｇ／ｈ〜５００ｋｇ／ｈ（１次蒸気圧力約０．６ＭＰａ）を変化させたときの増加音量（騒音測定値から暗騒音値を差し引いた値）の変化を示す。また、蒸気供給量５００ｋｇ／ｈ時の騒音測定結果を図１４〜図１６に示す。図１１〜図１３によれば、蒸気供給量が多くなるにつれて増加音量は増大するが、本発明の逆斜流型は、正斜流型に比べて音量が増大する傾きが小さいことがわかる。また、図１４〜図１６によれば、正斜流型では全騒音に対する増加音量の割合が大きいことが読み取れる。これより、本発明の流体混合装置（逆斜流型）は、正斜流型に比べて、スチーム供給時の音を低減できることが分かる。また、本発明の逆斜流型の装置においては、スチーム供給時のハンチング現象やスチーム供給停止時のウォータハンマ現象は起こらなかった。 FIG. 20 is a diagram illustrating a device for supplying a high-pressure fluid in the same direction as the flow direction of a low-pressure fluid (a normal oblique flow type) and a high-pressure fluid supplied to face the flow direction of the low-pressure fluid. Noise measurement was performed on the apparatus of the present invention (reverse mixed flow type) as shown in FIG. The fluid mixing device used was the reverse mixed flow type device used in Example 1, and the normal mixed flow type and the reverse mixed flow type were switched by changing the direction in which the first conduit was arranged. FIGS. 11 to 13 show that the steam supply amount is 50 kg / h to 500 kg / h (primary steam pressure of about 0.1 .mu.m) for water supply rates of 10 m 3 / h, 20 m 3 / h and 30 m 3 / h, respectively. 6MP) shows the change in the increased sound volume (the value obtained by subtracting the background noise value from the measured noise value). Moreover, the noise measurement result at the time of a steam supply rate of 500 kg / h is shown in FIGS. According to FIGS. 11 to 13, the increased sound volume increases as the steam supply amount increases, but it can be seen that the reverse mixed flow type of the present invention has a smaller inclination for increasing the sound volume than the normal mixed flow type. Moreover, according to FIGS. 14-16, it can be read that the ratio of the increased sound volume to the total noise is large in the forward diagonal flow type. From this, it can be seen that the fluid mixing device (reverse mixed flow type) of the present invention can reduce the sound during the steam supply compared to the normal mixed flow type. In the reverse mixed flow type apparatus of the present invention, neither the hunting phenomenon at the time of steam supply nor the water hammer phenomenon at the stop of the steam supply occurred.

実施例３においては、実施例１及び実施例２において使用した逆斜流型、正斜流型及び垂直流型の３つの型について、水（１７ｍ３／ｈ）とスチームの混合による昇温試験を行った。試験方法は、図２に示すような形態の混合装置を使用し、第１導管直後の配管内に図１７に示すように９つの測温抵抗体を十字状に配置して０．１秒毎に混合流体の温度測定を行った。図１８に、９箇所の測定温度を平均した水温変化の結果を示す。各型の１分当たりの平均昇温温度は、垂直流型１５．１℃／分、逆斜流定径型１５．９℃／分、逆斜流拡径型１６．８℃／分であった。図１８及び平均昇温温度によれば、３つの型の昇温速度はほぼ同等であり、本発明の逆斜流型の装置は、垂直流型と同等の混合性能を有していることが分かる。また、測温抵抗体の場所別の昇温状況を比較しても、各箇所はほぼ均等に昇温しており、混合に偏りが生じないことも判明した。これより、本発明の逆斜流型の流体混合装置の混合性能に問題がないことが示された。 In Example 3, the temperature rising test by mixing water (17 m 3 / h) and steam for the three types of reverse mixed flow type, forward mixed flow type and vertical flow type used in Examples 1 and 2 Went. The test method uses a mixing apparatus having a configuration as shown in FIG. 2, and nine resistance temperature detectors are arranged in a cross shape as shown in FIG. The temperature of the mixed fluid was measured. In FIG. 18, the result of the water temperature change which averaged nine measurement temperature is shown. The average temperature rise per minute for each type was 15.1 ° C / min for the vertical flow type, 15.9 ° C / min for the reverse mixed flow constant diameter type, and 16.8 ° C / min for the reverse mixed flow diameter expansion type. It was. According to FIG. 18 and the average temperature rise temperature, the temperature rise rates of the three types are almost the same, and the reverse mixed flow type apparatus of the present invention has a mixing performance equivalent to that of the vertical flow type. I understand. Further, it was also found that even when the temperature rising conditions of the resistance temperature detectors were compared for each location, the temperature was increased almost uniformly at each location, and there was no bias in mixing. This indicates that there is no problem in the mixing performance of the reverse mixed flow type fluid mixing apparatus of the present invention.

実施例においては、液体（水）と気体（スチーム）の混合例について例示したが、本発明の流体混合装置は、実施例に限定されることなく、液体と液体の混合及び気体と気体の混合にも利用することができる。また、本発明の流体混合装置は、流動性のある固体状の流体の混合にも適用することができる。   In the embodiment, the example of mixing liquid (water) and gas (steam) has been illustrated. However, the fluid mixing apparatus of the present invention is not limited to the embodiment, and is a mixture of liquid and liquid and a mixture of gas and gas. Can also be used. The fluid mixing device of the present invention can also be applied to mixing fluid solid fluids.

本発明の第１実施形態に係る流体混合装置（逆斜流型）の（投影）断面図。The (projection) sectional drawing of the fluid mixing apparatus (reverse mixed flow type) which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る流体混合装置（逆斜流型）の（投影）断面図。The (projection) sectional drawing of the fluid mixing apparatus (reverse mixed flow type) which concerns on 1st Embodiment of this invention. 本発明の第１実施形態に係る流体混合装置（逆斜流型）の（投影）断面図。The (projection) sectional drawing of the fluid mixing apparatus (reverse mixed flow type) which concerns on 1st Embodiment of this invention. 流体混合装置における第１導管の軸方向に垂直な（投影）断面図。FIG. 3 is a (projection) cross-sectional view perpendicular to the axial direction of the first conduit in the fluid mixing device. 流体混合装置における第１導管の透視斜視図。The perspective view of the 1st conduit | pipe in a fluid mixing apparatus. 本発明の第２の実施形態に係る流体混合装置（逆斜流型）の（投影）断面図。(Projection) sectional drawing of the fluid mixing apparatus (reverse mixed flow type) which concerns on the 2nd Embodiment of this invention. 本発明の第２の実施形態に係る流体混合装置（逆斜流型）の（投影）断面図。(Projection) sectional drawing of the fluid mixing apparatus (reverse mixed flow type) which concerns on the 2nd Embodiment of this invention. 流体混合装置の第１導管の種々の形態を説明するための（投影）断面図。(Projection) sectional drawing for demonstrating the various forms of the 1st conduit | pipe of a fluid mixing apparatus. 実施例１の騒音測定結果を示すグラフ。3 is a graph showing noise measurement results of Example 1. 実施例１の騒音測定結果を示すグラフ。3 is a graph showing noise measurement results of Example 1. 実施例２の音量変化結果を示すグラフ。10 is a graph showing the result of volume change in Example 2. 実施例２の音量変化結果を示すグラフ。10 is a graph showing the result of volume change in Example 2. 実施例２の音量変化結果を示すグラフ。10 is a graph showing the result of volume change in Example 2. 実施例２の騒音測定結果を示すグラフ。10 is a graph showing the noise measurement result of Example 2. 実施例２の騒音測定結果を示すグラフ。10 is a graph showing the noise measurement result of Example 2. 実施例２の騒音測定結果を示すグラフ。10 is a graph showing the noise measurement result of Example 2. 実施例３の測温抵抗体の配置位置を示す配管の断面図。Sectional drawing of piping which shows the arrangement position of the resistance temperature sensor of Example 3. FIG. 実施例３の昇温測定結果を示すグラフ。10 is a graph showing the temperature rise measurement result of Example 3. 従来の流体混合装置（垂直流型）の断面図。Sectional drawing of the conventional fluid mixing apparatus (vertical flow type). 従来の流体混合装置（正斜流型）の断面図Sectional view of a conventional fluid mixing device (normal mixed flow type)

符号の説明Explanation of symbols

１ 流体混合装置
２ 第１導管
３ 第２導管
４ チャンバ
５ 孔
６ 測温抵抗体
７ 配管
１１ 流体混合装置
１２ 第１導管
１３ 第２導管
１４ チャンバ
１５ 孔

DESCRIPTION OF SYMBOLS 1 Fluid mixing apparatus 2 1st conduit | pipe 3 2nd conduit | pipe 4 Chamber 5 hole 6 Resistance temperature detector 7 Piping 11 Fluid mixing apparatus 12 1st conduit | pipe 13 2nd conduit | pipe 14 Chamber 15 hole

Claims (7)

第１流体を導く第１導管と、
前記第１導管の外周部の少なくとも一部にスチームを供給するチャンバと、
前記チャンバに前記スチームを導く第２導管と、を有し、
前記第１導管は、前記チャンバが面する部分に、スチームを第１流体に混入させるために穿設され、軸方向及び周方向に配設された複数の孔を有し、
前記第１導管の軸方向に平行な断面において、前記孔が前記第１導管の外から内へ向かう方向は、第１流体の上流側であり、
前記孔は、前記孔の中心を通る線と前記第１導管の中心を通る線とのなす角度が９０°のときと比べて、スチーム供給時に発生する音が低下するように、軸方向に対して傾斜している（ただし前記角度が７０°以上９０°未満は除く）ことを特徴とする流体混合装置。 A first conduit for conducting a first fluid;
A chamber for supplying steam to at least a portion of the outer periphery of the first conduit;
A second conduit for directing the steam to the chamber;
The first conduit has a plurality of holes that are formed in the portion facing the chamber to mix steam with the first fluid and are arranged in the axial direction and the circumferential direction .
In a cross section parallel to the axial direction of the first conduit, the direction in which the hole is directed from the outside to the inside of the first conduit, Ri upstream der of the first fluid,
Compared to the case where the angle formed by the line passing through the center of the hole and the line passing through the center of the first conduit is 90 °, the hole is less in the axial direction so that the sound generated when steam is supplied is reduced. The fluid mixing device is characterized in that the angle is inclined (except for the angle of 70 ° to less than 90 °) . 第１流体を導く第１導管と、
前記第１導管に内設され、前記第１導管内にスチームを供給するチャンバと、
前記チャンバに前記スチームを導く第２導管と、を有し、
前記チャンバは、スチームを第１流体に混入させるために穿設され、軸方向及び周方向に配設された複数の孔を有し、
前記第１導管の軸方向に平行な断面において、前記孔が前記チャンバの内から外へ向かう方向は、第１流体の上流側であり、
前記孔は、前記孔の中心を通る線と前記チャンバの中心を通る線とのなす角度が９０°のときと比べて、前記スチーム供給時に発生する音が低下するように、軸方向に対して傾斜している（ただし前記角度が７０°以上９０°未満は除く）ことを特徴とする流体混合装置。 A first conduit for conducting a first fluid;
A chamber provided in the first conduit for supplying steam into the first conduit;
A second conduit for directing the steam to the chamber;
The chamber has a plurality of holes that are formed in order to mix steam into the first fluid and are disposed in the axial direction and the circumferential direction .
In a cross section parallel to the axial direction of the first conduit, the direction in which the hole is directed from inside to outside of said chamber, Ri upstream der of the first fluid,
The hole has an axial direction so that the sound generated when the steam is supplied is reduced compared to the case where the angle between the line passing through the center of the hole and the line passing through the center of the chamber is 90 °. A fluid mixing device characterized by being inclined (however, the angle is not less than 70 ° and less than 90 °) . 第１流体とスチームとを混合する流体混合方法において、
前記第１流体を導く第１導管の外側から、前記第１導管に穿設し、軸方向及び周方向に配設した複数の孔を経由して、前記第１導管の中心を通る線に対する前記スチームの流入角度が９０°のときと比べてスチーム供給時に発生する音が低下するように前記第１流体の上流側に向かって傾斜させて（ただし前記流入角度が７０°以上９０°未満は除く）、前記スチームを前記第１流体に供給することを特徴とする流体混合方法。 In the fluid mixing method of mixing the first fluid and steam ,
From the outside of the first conduit for guiding the first fluid to the line passing through the center of the first conduit through a plurality of holes drilled in the first conduit and arranged in the axial and circumferential directions It is inclined toward the upstream side of the first fluid so that the sound generated when steam is supplied is lower than when the steam inflow angle is 90 ° (however, the inflow angle is 70 ° or more and less than 90 °). A fluid mixing method , wherein the steam is supplied to the first fluid. 前記第１導管内の流体に旋回流が生じるように、前記第１導管の軸方向に垂直な断面において前記第１導管面に対し同一方向に傾斜をつけて前記スチームを供給することを特徴とする請求項３記載の流体混合方法。 The steam is supplied while being inclined in the same direction with respect to the first conduit surface in a cross section perpendicular to the axial direction of the first conduit so that a swirling flow is generated in the fluid in the first conduit. The fluid mixing method according to claim 3. 第１流体とスチームとを混合する流体混合方法において、
前記第１流体を導く第１導管の内側に配置した前記スチームを供給するチャンバに穿設し、軸方向及び周方向に配設した複数の孔を経由して、前記チャンバの中心を通る線に対する前記スチームの流入角度が９０°のときと比べてスチーム供給時に発生する音が低下するように前記第１流体の上流側に向かって傾斜させて（ただし前記流入角度が７０°以上９０°未満は除く）、前記スチームを前記第１流体に供給することを特徴とする流体混合方法。 In the fluid mixing method of mixing the first fluid and steam ,
A line that passes through the center of the chamber through a plurality of holes that are provided in the axial direction and the circumferential direction in the chamber that supplies the steam disposed inside the first conduit that guides the first fluid. The steam is inclined toward the upstream side of the first fluid so that the sound generated when steam is supplied is lower than when the steam inflow angle is 90 ° (however, the inflow angle is 70 ° or more and less than 90 °). A fluid mixing method , wherein the steam is supplied to the first fluid. 前記第１導管内の流体に旋回流が生じるように、前記第１導管の軸方向に垂直な断面において前記チャンバ面に対し同一方向に傾斜をつけて前記スチームを供給することを特徴とする請求項５記載の流体混合方法。 The steam is supplied with an inclination in the same direction with respect to the chamber surface in a cross section perpendicular to the axial direction of the first conduit so that a swirling flow is generated in the fluid in the first conduit. Item 6. The fluid mixing method according to Item 5. 前記第１流体を水とすることを特徴とする請求項３〜６のいずれか一項に記載の流体混合方法。 The fluid mixing method according to any one of claims 3-6 for the first fluid and said water and to Rukoto.
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