JPH0368084B2 - - Google Patents

Info

Publication number
JPH0368084B2
JPH0368084B2 JP27186084A JP27186084A JPH0368084B2 JP H0368084 B2 JPH0368084 B2 JP H0368084B2 JP 27186084 A JP27186084 A JP 27186084A JP 27186084 A JP27186084 A JP 27186084A JP H0368084 B2 JPH0368084 B2 JP H0368084B2
Authority
JP
Japan
Prior art keywords
nozzle
water
flat
laminar
flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP27186084A
Other languages
Japanese (ja)
Other versions
JPS61150712A (en
Inventor
Motoji Tagashira
Hiroshi Kamio
Toyokazu Teramoto
Shuzo Fukuda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP27186084A priority Critical patent/JPS61150712A/en
Priority to GB08524678A priority patent/GB2165784B/en
Priority to DE19853537508 priority patent/DE3537508A1/en
Priority to FR8515657A priority patent/FR2571984B1/en
Publication of JPS61150712A publication Critical patent/JPS61150712A/en
Publication of JPH0368084B2 publication Critical patent/JPH0368084B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/005—Curtain coaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62—Quenching devices
    • C21D1/667—Quenching devices for spray quenching

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、高温鋼材の冷却に使用されるフラツ
トラミナーノズルヘツダの改良に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in flat laminar nozzle headers used for cooling high-temperature steel materials.

［従来の技術］ 熱間圧延設備におけるオンライン熱鋼板や再加
熱した熱鋼板の強制冷却又は焼入れには、冷却能
力が大きく板幅方向の冷却が均一なフラツトラミ
ナーフロー（平板状層流）の使用が適しており、
従来このためには第４図ａに示す解放型ノズルヘ
ツダ１０、又は同ｂに示すヘツダ内の空気をすべ
て抜き出した密閉型ノズルヘツダ２０が使用され
ている。解放型ノズルヘツダ１０においては、給
水管１１の下側に多数穿設された流出口１２より
抽水された冷却水１３を、スリツトノズル１４よ
り流出せしめて層流の吐出流１５を形成し、この
吐出流１５により熱鋼板を冷却させている。[Prior art] For forced cooling or quenching of online hot steel sheets or reheated hot steel sheets in hot rolling equipment, flat laminar flow (flat laminar flow), which has a large cooling capacity and uniform cooling in the sheet width direction, is used. suitable for use,
Conventionally, for this purpose, an open type nozzle header 10 shown in FIG. In the open type nozzle header 10, the cooling water 13 extracted from a number of outlet ports 12 provided below the water supply pipe 11 is made to flow out from the slit nozzle 14 to form a laminar discharge flow 15. 15 to cool the hot steel plate.

又密閉型ノズルヘツダ２０においては、給水管
２２より給水された冷却水をタンク２１内に充満
させた上でスリツトノズル２３より流出させ、層
流の吐出流２４を得るのである。 In the closed type nozzle header 20, the tank 21 is filled with cooling water supplied from the water supply pipe 22 and then flowed out from the slit nozzle 23 to obtain a laminar discharge flow 24.

ところでこのスリツトノズルの構造では、第４
図のノズル間〓ｔによつて層流を維持できる最低
流量があり、それ以下まで流量を絞つてゆくと、
スリツトノズル１４，２３の出口から空気お捲き
こんでスリツトノズル１４，２３からの吐出流は
不連続、不均一粒径の滴下水となり層粒状態が維
持されない。また流量を増加させてゆくとノズル
からの吐出流速が速くなり、スリツトノズルから
の吐出流１５，２４が乱流状態となつてフラツト
ラミナーフローが得らえなくなる。そして従来の
単一のスリツトノズルでは、流量を制御できる範
囲は最大、最小、の流量比でせいぜい５倍程度
で、冷却能力の調整範囲が狭く、さらにスリスト
ギヤツプを板幅方法に均一に製作することが困難
であるなどの欠点を有している。 By the way, in the structure of this slit nozzle, the fourth
There is a minimum flow rate that can maintain laminar flow between the nozzles in the figure, and if the flow rate is reduced below that,
Air is drawn in from the outlets of the slit nozzles 14, 23, and the discharge flow from the slit nozzles 14, 23 becomes dripping water with discontinuous and non-uniform particle sizes, and the layered state of grains is not maintained. Further, as the flow rate increases, the velocity of the discharge flow from the nozzle increases, and the discharge flows 15 and 24 from the slit nozzle become turbulent, making it impossible to obtain a flat laminar flow. With a conventional single slit nozzle, the range in which the flow rate can be controlled is at most 5 times the ratio of the maximum and minimum flow rates, the adjustment range for cooling capacity is narrow, and it is difficult to manufacture the slit gap uniformly in the direction of the plate width. It has disadvantages such as being difficult.

この欠点を解消するために開発されたのが、特
願昭59−222277号（特開昭61−103616号）に記載
の発明である。第５図は該発明の実施例を示すフ
ラツトラミナーノズルヘツダの断面図で、該ノズ
ルヘツダは、水槽１の前側板２に平板状ノズル３
を取りつけ、給水管１１の給水口１２より冷却水
４を供給し、冷却水の水面５が平板状ノズル３を
越すと、冷却水４は該ノズル３に沿つて流れ、ノ
ズルの先端より流下して層流の吐出流６が得られ
るように構成されている。このフラツトラミナー
ノズルヘツダにより得られる層流の吐出流６は、
板幅方向の流量分布が均一で、流量調整範囲も非
常に大きく、またノズルヘツダの構造も簡単であ
るため、前述の従来のノズルヘツダ１０，２０に
比べはるかに優れたものである。 The invention described in Japanese Patent Application No. 59-222277 (Japanese Unexamined Patent Publication No. 61-103616) was developed to overcome this drawback. FIG. 5 is a sectional view of a flat laminar nozzle header showing an embodiment of the invention.
is installed, cooling water 4 is supplied from the water supply port 12 of the water supply pipe 11, and when the water surface 5 of the cooling water passes over the flat nozzle 3, the cooling water 4 flows along the nozzle 3 and flows down from the tip of the nozzle. The structure is such that a laminar discharge flow 6 can be obtained. The laminar discharge flow 6 obtained by this flat laminar nozzle header is
The flow rate distribution in the plate width direction is uniform, the flow rate adjustment range is very wide, and the structure of the nozzle header is simple, so it is far superior to the conventional nozzle headers 10 and 20 described above.

［発明が解決しようとする問題点］ ところでこのフラツトラミナーノズルヘツダに
よる層状吐出流は、その落下の軌跡が放物選であ
り、この軌跡はノズルからの吐出速度すなわち供
給水量によつて変化する。第５図において、層状
吐出流６が落下し、冷却すべき鋼板３５の表面に
衝突する位置Ｐのノズル先端からの距離Ｘ［ｍ］
は、ノズルヘツダから鋼板表面までの高さをＨ
［ｍ］、ノズル吐出流速をV0［ｍ／sec］、重力の加
速度を9.8［ｍ／sec2］とすれば、Ｈが2.5ｍ以下の
範囲であれば次式で表示できる。[Problems to be solved by the invention] By the way, the laminar discharge flow from this flat laminar nozzle header has a parabolic trajectory of fall, and this trajectory changes depending on the discharge speed from the nozzle, that is, the amount of water supplied. do. In FIG. 5, distance X [m] from the nozzle tip to a position P where the laminar discharge flow 6 falls and collides with the surface of the steel plate 35 to be cooled.
is the height from the nozzle header to the steel plate surface H
[m], the nozzle discharge flow velocity is V 0 [m/sec], and the acceleration of gravity is 9.8 [m/sec 2 ], then if H is within a range of 2.5 m or less, it can be expressed by the following formula.

今Ｈを1.5ｍとして、給水流量Ｑを0.3〜2.5m3／
sec.ｍの範囲で変化せしめると、Ｐ点の位置すな
わちＸは350mmの範囲で変化する。 If H is now 1.5 m, the water supply flow rate Q is 0.3 to 2.5 m 3 /
If it is varied within a range of sec.m, the position of point P, that is, X, will vary within a range of 350 mm.

一般に高温のストリツプ鋼板を冷却する場合
は、冷却歪の防止や材質の均一化等の理由から、
鋼板の上面とともに下面も同時に冷却している。
そのため上面に対しては上方から冷却水を落下さ
せ、仮面に対しては下方から鋼板下面に冷却水を
噴射させているが、この上方からの冷却水の落下
位置と下方からの噴射位置とが異なると、落下水
及び噴射水の水圧によりストリツプにモーメント
が生ずるため、ストリツプがおどり操業に支障を
きたすこととなる。下面に対する噴射位置は噴射
ノズルの位置が一定しているので問題はないが、
上面に対する冷却水の落下位置が流量などにより
変化すると、ストリツプ上下面での落下位置、噴
射位置が一致せず、上記現象を生ずることとな
る。 Generally, when cooling a high temperature strip steel plate, for reasons such as preventing cooling distortion and making the material uniform,
Both the upper and lower surfaces of the steel plate are cooled at the same time.
Therefore, for the upper surface, cooling water is dropped from above, and for the mask, cooling water is sprayed from below onto the lower surface of the steel plate, but the position where the cooling water falls from above and the position where it is sprayed from below are different. If they are different, a moment will be generated on the strip due to the water pressure of the falling water and the jetted water, which will hinder the strip operation. There is no problem with the injection position relative to the bottom surface because the position of the injection nozzle is constant, but
If the drop position of the cooling water on the top surface changes depending on the flow rate, etc., the drop position and the injection position on the top and bottom surfaces of the strip will not match, resulting in the above-mentioned phenomenon.

またこの層状吐出流で鋼管の外面の冷却を行な
うような場合は、鋼管の頂部に常に層状吐出流を
落下させることができなくなり、鋼管の冷却効果
の面で不都合である。こうした欠点を防止するた
め水量に応じノズルヘツダの位置を前後させる装
置を備えることが考えられるが、設備コストの点
およびメンテナンスの点で問題が残る。 Furthermore, in the case where the outer surface of the steel pipe is cooled with this laminar discharge flow, the laminar discharge flow cannot always fall on the top of the steel pipe, which is inconvenient in terms of the cooling effect of the steel pipe. In order to prevent these drawbacks, it is conceivable to provide a device that moves the position of the nozzle header back and forth depending on the amount of water, but problems remain in terms of equipment cost and maintenance.

本発明は上述の従来のノズルヘツダの問題点を
解消した、水量が変化しても層流の吐出流の落下
点が変化しないフラツトラミナーノズルヘツダを
提供しようとするものである。 The present invention aims to solve the above-mentioned problems of the conventional nozzle header and to provide a flat laminar nozzle header in which the falling point of the laminar discharge flow does not change even if the amount of water changes.

［発明の実施例］ 第１図は本発明の一実施例を示すフラツトラミ
ナーノズルヘツダのａは側面断面図、ｂは平面
図、第２図は要部断面図である。図中１〜６，１
１，１２は従来の装置と同一部品、８は吐出流の
衝突板、９は層状落下流、１７は側板である。ま
たＡはノズル３の先端より衝突板８までの距離
［ｍ］、Ｂはノズル３の上面より衝突板８の下端ま
での距離［ｍ］、Ｄはノズル３における吐出流の
水膜の厚さ［ｍ］、Ｑはノズル３を流れる冷却水
の流量［m3／sec.ｍ］でQmaxは最大流量、
Qminは最小流量である。[Embodiment of the Invention] FIG. 1 is a side sectional view, b is a plan view, and FIG. 2 is a sectional view of a main part of a flat laminar nozzle header showing an embodiment of the present invention. 1 to 6, 1 in the figure
Reference numerals 1 and 12 are the same parts as in the conventional device, 8 is a discharge flow collision plate, 9 is a laminar falling flow, and 17 is a side plate. Also, A is the distance [m] from the tip of the nozzle 3 to the collision plate 8, B is the distance [m] from the top surface of the nozzle 3 to the bottom end of the collision plate 8, and D is the thickness of the water film of the discharge flow at the nozzle 3. [m], Q is the flow rate of cooling water flowing through the nozzle 3 [m 3 /sec.m], Qmax is the maximum flow rate,
Qmin is the minimum flow rate.

図に示すように、水槽１の側板１７を延長し、
その先端に衝突板８を装着する。給水管１１に穿
設された流出孔１２より供給される冷却水４の水
面５が、水槽１の前側壁２の高さより高くなる
と、冷却水４は前側壁２をオーバフローしてノズ
ル３上を流れ、ノズル３の先端より吐出する。吐
出流の前方には吐出流の衝突板８を配置してある
ので、吐出流６は該衝突板８に当つて垂直下方に
流下し、層状落下流９となる。 As shown in the figure, the side plate 17 of the aquarium 1 is extended,
A collision plate 8 is attached to its tip. When the water level 5 of the cooling water 4 supplied from the outlet hole 12 drilled in the water supply pipe 11 becomes higher than the height of the front wall 2 of the water tank 1, the cooling water 4 overflows the front wall 2 and flows over the nozzle 3. The liquid flows and is discharged from the tip of the nozzle 3. Since a discharge flow collision plate 8 is disposed in front of the discharge flow, the discharge flow 6 hits the collision plate 8 and flows vertically downward, forming a laminar falling flow 9.

なおノズル３の先端より吐出する吐出流６を衝
突板８に衝突させ所要の層状落下流９を得るに
は、第２図におけるＡ，Ｂ，Ｄ及び流量Ｑが次の
(1)、(2)式の条件を満足する必要がある。 In addition, in order to cause the discharge flow 6 discharged from the tip of the nozzle 3 to collide with the collision plate 8 and obtain the required laminar falling flow 9, A, B, D and the flow rate Q in Fig. 2 are as follows.
It is necessary to satisfy the conditions of equations (1) and (2).

Ａ≦Dmax. ……(1) 但しDmaxは最大流量Qmaxに対するＤの値
で、その単位は［ｍ］である。 A≦Dmax. ...(1) However, Dmax is the value of D with respect to the maximum flow rate Qmax, and its unit is [m].

Ｂ≧Ｇ×A2／２×Qmin／Dmin ……(2) 但し Ｇは重力の加速度でその単位は ［m3／sec.ｍ］ Dminは最小流量Qminに対応するＤの値で、
その単位は［ｍ］である。 B≧G×A 2 /2×Qmin/Dmin ……(2) However, G is the acceleration of gravity and its unit is [m 3 /sec.m] Dmin is the value of D corresponding to the minimum flow rate Qmin,
Its unit is [m].

この(1)、(2)の式を満足すれば、給水流量が変化
しても、上記層状落下流９の鋼板表面への落下点
を常に一定にすることができる。 If these equations (1) and (2) are satisfied, even if the water supply flow rate changes, the point at which the laminar falling flow 9 falls onto the steel plate surface can always be kept constant.

しかしＤがＡより大きくなれば、落下する水流
の厚さはＡ以上となるため、落下水流は加速され
層流が保てなくなるだけでなく、所定の水量（冷
却速度）が得られなくなる。従つて設計の最大水
量に対応するDmaxに対し、Ａは少なくとも等し
いかそれ以上にする必要がある。 However, if D becomes larger than A, the thickness of the falling water stream will be greater than A, so the falling water stream will not only be accelerated and laminar flow cannot be maintained, but also a predetermined amount of water (cooling rate) will not be obtained. Therefore, A needs to be at least equal to or greater than Dmax, which corresponds to the maximum amount of water in the design.

また給水流量Ｑが大きい場合は、Ｄが大で当然
ノズル３の先端からの吐出流の初速V0も大きく
なり、従つて第３図ａに示すように、吐出流の描
く放物線の先端は衝突板８に衝突して、鉛直下方
への層流の落下流を形成するが、給水流量Ｑが小
さく従つてＤも小で、ノズル３の先端からの吐出
流の初速V0が小さい場合は、衝突板の長さすな
わちＢが小さいと、第３図ｂに示すように吐出流
の描く放物線が衝突板８の衝突せず、従つて鋼板
への衝突位置がノズル３の先端からＡだけの距離
を有する所要の層状落下流９は得られなくなる。
すなわち衝突板８のノズル３の上面からの高さＢ
が(2)式を満足させることは、所定位置に層状落下
９を得るための必須条件である。 In addition, when the water supply flow rate Q is large, D is large and the initial velocity V 0 of the discharge flow from the tip of the nozzle 3 is naturally also large. Therefore, as shown in Figure 3a, the tip of the parabola drawn by the discharge flow collides. It collides with the plate 8 and forms a vertically downward laminar falling flow, but if the water supply flow rate Q is small, D is also small, and the initial velocity V 0 of the discharge flow from the tip of the nozzle 3 is small. If the length of the collision plate, that is, B, is small, the parabola drawn by the discharge flow will not collide with the collision plate 8, as shown in FIG. The required laminar falling flow 9 with .
In other words, the height B of the collision plate 8 from the top surface of the nozzle 3
Satisfying equation (2) is an essential condition for obtaining the layered drop 9 at a predetermined position.

［発明の効果］ 本発明はフラツトラミナーノズルヘツダにおい
て、平板状ノズルの前方に吐出流の衝突板を配置
して、ノズルからの吐出流を該衝突板に衝突させ
て鉛直下方へ落下する層流を形成したので、次に
掲げるような優れた効果を上げることとなつた。[Effects of the Invention] In the flat laminar nozzle header of the present invention, a discharge flow collision plate is arranged in front of the flat nozzle, and the discharge flow from the nozzle collides with the collision plate and falls vertically downward. Since a laminar flow was formed, the following excellent effects were achieved.

(1) フラツトラミナーノズルヘツダからの層流の
落下流が常に一定位置に落下するので、被冷却
物の熱鋼板や熱鋼管の冷却効率が大きく向上し
た。(1) Since the laminar flow from the flat laminar nozzle header always falls at a fixed position, the cooling efficiency of hot steel plates and hot steel pipes, which are the objects to be cooled, has been greatly improved.

(2) 特に高精度の加工を必要としないので、製造
コストが安くメンテナンスも容易である。(2) Since it does not require particularly high-precision machining, manufacturing costs are low and maintenance is easy.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例を示すａは側面断面
図、ｂは平面図、第２図はその要部拡大図、第３
図はノズルからの吐出流と衝突板との関係を示す
説明図、第４図ａ及びｂは従来のノズルヘツダの
断面図と斜視図、第５図は従来のフラツトラミナ
ーノズルヘツダの側面図である。 図中１は水槽、２は前側壁、３は平板状ノズ
ル、４は冷却水、５はその水面、６は吐出流、７
は鋼板、８は吐出流の衝突板、９は層状落下流で
ある。 Fig. 1 shows one embodiment of the present invention; a is a side sectional view, b is a plan view, Fig. 2 is an enlarged view of the main part, and Fig. 3 is a side sectional view.
The figure is an explanatory diagram showing the relationship between the discharge flow from the nozzle and the collision plate, Figures 4a and b are sectional views and perspective views of a conventional nozzle header, and Figure 5 is a side view of a conventional flat laminar nozzle header. It is. In the figure, 1 is a water tank, 2 is a front wall, 3 is a flat nozzle, 4 is cooling water, 5 is the water surface, 6 is a discharge flow, and 7
8 is a steel plate, 8 is a discharge flow collision plate, and 9 is a laminar falling flow.

Claims (1)

【特許請求の範囲】 １ 給水管を備えた水槽と、該水槽の一個の側壁
の上辺に設けた平板状ノズルと、該平板状ノズル
の前方にノズルの幅より僅かに大きい幅を有し、
その面がノズルの平面に直交するように垂直に配
設された衝突板とより構成されたフラツトラミナ
ーノズルヘツダであつて、 上記平板状ノズルの先端と衝突板との間隔をＡ
［ｍ］、該平板状ノズルの先端上面から衝突板の下
辺端までの垂直距離をＢ［ｍ］、上記平板状ノズル
上の水流の流量をＱ［m3／sec.ｍ］、平板状ノズル
の先端における水膜の厚さをＤ［ｍ］としたとき、
Ａ、Ｂ、Ｄ及びＱが下記(1)及び(2)式を満足するこ
とを特徴とするフラツトラミナーノズルヘツダ。 Ａ≧Dmax. ……(1) Ｂ≧Ｇ×A2／２×Qmin／Dmin ……(2) Dmax：平板状ノズル上の水流が最大のときの平
板状ノズルの先端における水膜の厚さ［ｍ］ Dmin：平板状ノズル上の水流が最小のときの平
板状ノズルの先端における水膜の厚さ［ｍ］ Qmin：平板状ノズル上の水流の最小の流量
［m3／sec.ｍ］ Ｇ：重量の加速度9.8［ｍ／sec2］とする。[Scope of Claims] 1. A water tank equipped with a water supply pipe, a flat nozzle provided on the upper side of one side wall of the water tank, and a width slightly larger than the width of the nozzle in front of the flat nozzle,
A flat laminar nozzle header consisting of a collision plate arranged vertically so that its surface is orthogonal to the plane of the nozzle, the distance between the tip of the flat nozzle and the collision plate being A.
[m], the vertical distance from the top surface of the tip of the flat nozzle to the bottom edge of the collision plate is B [m], the flow rate of the water flow on the flat nozzle is Q [m 3 /sec.m], flat nozzle When the thickness of the water film at the tip of is D [m],
A flat laminar nozzle header characterized in that A, B, D and Q satisfy the following formulas (1) and (2). A≧Dmax. …(1) B≧G×A 2 /2×Qmin/Dmin …(2) Dmax: Thickness of water film at the tip of the flat nozzle when the water flow on the flat nozzle is maximum [m] Dmin: Thickness of water film at the tip of the flat nozzle when the water flow on the flat nozzle is minimum [m] Qmin: Minimum flow rate of the water flow on the flat nozzle [m 3 /sec.m] G: Weight acceleration 9.8 [m/sec 2 ].
JP27186084A 1984-10-24 1984-12-25 Flat laminar nozzle header Granted JPS61150712A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP27186084A JPS61150712A (en) 1984-12-25 1984-12-25 Flat laminar nozzle header
GB08524678A GB2165784B (en) 1984-10-24 1985-10-07 Nozzle header for producing a flat laminar flow
DE19853537508 DE3537508A1 (en) 1984-10-24 1985-10-22 NOZZLE DISTRIBUTION HEAD FOR GENERATING A FLAT LAMINARY FLOW
FR8515657A FR2571984B1 (en) 1984-10-24 1985-10-22 ADJUSTABLE DISPENSER FOR PRODUCING A FLAT LAMINARY FLOW

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27186084A JPS61150712A (en) 1984-12-25 1984-12-25 Flat laminar nozzle header

Publications (2)

Publication Number Publication Date
JPS61150712A JPS61150712A (en) 1986-07-09
JPH0368084B2 true JPH0368084B2 (en) 1991-10-25

Family

ID=17505895

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27186084A Granted JPS61150712A (en) 1984-10-24 1984-12-25 Flat laminar nozzle header

Country Status (1)

Country Link
JP (1) JPS61150712A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4239354B2 (en) * 2000-03-31 2009-03-18 Ｊｆｅスチール株式会社 Laminar flow nozzle, cooling device and cooling method for electrotinned steel sheet

Also Published As

Publication number Publication date
JPS61150712A (en) 1986-07-09

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