JPS63230830A - Apparatus for cooling steel strip - Google Patents
Apparatus for cooling steel stripInfo
- Publication number
- JPS63230830A JPS63230830A JP6544787A JP6544787A JPS63230830A JP S63230830 A JPS63230830 A JP S63230830A JP 6544787 A JP6544787 A JP 6544787A JP 6544787 A JP6544787 A JP 6544787A JP S63230830 A JPS63230830 A JP S63230830A
- Authority
- JP
- Japan
- Prior art keywords
- steel strip
- injecting
- coolant
- refrigerant
- holes
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 40
- 239000010959 steel Substances 0.000 title claims abstract description 40
- 238000001816 cooling Methods 0.000 title claims abstract description 20
- 239000003507 refrigerant Substances 0.000 claims description 19
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000002826 coolant Substances 0.000 abstract 4
- 238000010276 construction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 230000014509 gene expression Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、鋼帯表面に冷媒を吹き付けて鋼帯表面上の冷
媒に強制対流を起こし、鋼帯を冷却する装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an apparatus for cooling a steel strip by spraying a refrigerant onto the surface of the steel strip to cause forced convection in the refrigerant on the surface of the steel strip.
（ロ）従来技術
鋼帯の連続焼鈍炉においては、鋼帯の加熱・均熱・冷却
の工程がとられている。この冷却工程においては、冷却
能を向上させるとともに均一な冷却をすることが省エネ
ルギおよび品質向上の面で大きな効果をもたらす、そこ
で、両者の効果を最大限にするために、同一噴出面積を
もつ噴出板においては、多数の噴出孔の最適設計には噴
出孔の間隔距離が重要な因子となる。(b) Prior Art In continuous annealing furnaces for steel strips, the steps of heating, soaking, and cooling the steel strip are performed. In this cooling process, improving the cooling capacity and achieving uniform cooling has a significant effect in terms of energy saving and quality improvement.Therefore, in order to maximize both effects, it is necessary to have the same ejection area. In the jet plate, the distance between the jet holes is an important factor in the optimal design of a large number of jet holes.
冷却装置における噴出板の形状には、円形状やスリット
状（板状）を多数配列し、多噴流にしたものが大半であ
る。Most of the jetting plates in cooling devices are circular or have a large number of slits (plates) arranged to form multiple jets.
多円形状ノズルには、ノズル形状やその配列の方法に、
また、多スリット状のものにはスリット幅やその間隔に
それぞれ工夫が施されている。しかし、各ノズル間の干
渉を防止するために、配列寸法を限定したものは見当た
らない。For polycircular nozzles, the nozzle shape and its arrangement method,
In addition, for multi-slit types, the width of the slits and the spacing between the slits are modified. However, in order to prevent interference between each nozzle, no one has been found that limits the arrangement size.
各ノズル間で噴出冷媒の干渉があると、第６図に示すよ
うに、鋼帯の両エツジ部は冷却能は良好であるが、中央
部は悪く、全面を均一冷却することが不可能で、品質面
に悪影響を与える。If there is interference between the ejected refrigerant between each nozzle, as shown in Figure 6, the cooling ability is good at both edges of the steel strip, but it is poor at the center, making it impossible to uniformly cool the entire surface. , which has a negative impact on quality.
鋼帯の上下面より冷媒を吹き付けて冷却を行なう従来法
では、ノズル間隔の寸法が異なり、冷却の制御が円滑に
実施できず、均一な冷却に大きな支障が生じている。In the conventional method of cooling the steel strip by spraying refrigerant from the upper and lower surfaces, the nozzle spacing is different, making it difficult to smoothly control the cooling, which poses a major problem in uniform cooling.
（ハ）発明が解決しようとする問題点
本発明が解決しようとする問題点は、噴出冷媒が鋼帯表
面上で干渉しないように噴出板の噴出孔の間隔寸法を特
定し、省エネルギ、品質向上を図ることにある。(c) Problems to be solved by the present invention The problems to be solved by the present invention are to specify the interval dimensions of the jetting holes of the jetting plate so that the spouted refrigerant does not interfere with the surface of the steel strip, and to improve energy saving and quality. The aim is to improve.
（ニ）問題点を解決するための手段
本発明の鋼帯の冷却装置は、鋼帯表面に冷媒を吹き付け
て鋼帯表面上の冷媒に強制対流を起こし、鋼帯を冷却す
る装置において、複数の噴出孔を設けた噴出板をかいし
て鋼帯表面に冷媒を噴射し、互いに隣接する３個の噴出
孔のうちの少なくとも２個の噴出口の寸法関係を下記の
式を満たすように設定することによって、上記間居点を
解決している。(d) Means for Solving the Problems The steel strip cooling device of the present invention sprays a refrigerant onto the surface of the steel strip to cause forced convection in the refrigerant on the surface of the steel strip. A refrigerant is injected onto the surface of the steel strip through a jetting plate provided with jetting holes, and the dimensional relationship of at least two of the three jetting holes adjacent to each other is set to satisfy the following formula. By doing so, the above-mentioned problem is solved.
Ｄ ＝ Ｓ ／１．８５＋ｄ・・・・・・（１）（ただ
し、５＝＝ｄ〜１０ｄの範囲）
Ｌａ、ｂ、ｃ≧Ｄ ＋１．５ｄ−・・・＝・（２）ｄ：
噴出孔口径
Ｄ：衝突噴流口径
Ｓ：噴出孔から鋼帯表面までの距離
Ｌａ、ｂ、ｃ：互いに隣接する３個の噴出口の相互間距
離
（ホ）実施例
第１Ｉ２Ｉおよび第２図を参照して、本発明の鋼帯の冷
却装置の実施例について説明する。噴出板１には複数の
噴出孔１１が設けられる。冷媒６（例えば、水等）が噴
出板１の噴出孔１１から鋼帯２に吹き付けられる。D = S /1.85+d...(1) (However, range of 5==d to 10d) La, b, c≧D +1.5d-...=(2) d:
Nozzle hole diameter D: Collision jet diameter S: Distance from the nozzle to the steel strip surface La, b, c: Distance between three adjacent nozzles (e) See Example 1I2I and FIG. An embodiment of the steel strip cooling device of the present invention will now be described. The ejection plate 1 is provided with a plurality of ejection holes 11. Refrigerant 6 (for example, water, etc.) is sprayed onto steel strip 2 from jet holes 11 of jet plate 1 .
噴出孔１１の口径をｄ、 ＠帯２の表面上の冷媒６の衝
突噴流口径をＤ、噴出板１と鋼帯２との間の距離をＳに
する。互いに隣接する３つの噴出孔１１の間隔をそれぞ
れＬａ、Ｌｂ、Ｌｃとする。The diameter of the jet hole 11 is d, the diameter of the colliding jet of the refrigerant 6 on the surface of the band 2 is D, and the distance between the jet plate 1 and the steel strip 2 is S. The intervals between three jet holes 11 adjacent to each other are respectively La, Lb, and Lc.
以上のように寸法関係を特定したとき、本発明の装置に
おいては、下記の関係式を満たすようにする。When the dimensional relationship is specified as described above, the following relational expression is satisfied in the apparatus of the present invention.
Ｄ ＝ Ｓ ／１．８５＋ｄ・・・・・・（１）（ただ
し、ｄ≦Ｓ≦１０ｄ）
Ｌ ａ 、 Ｌ ｂ 、 Ｌ ｃのうちの少なくとも２
つ≧Ｄ＋１．５ｄ・・・・・・・・・・・・（２ン第１
図（Ａ）および第２図（Ａ）は全面干渉域の場合を、ま
た、第１図（Ｂ）および第２図（Ｂ）は一部干渉域のあ
る場合をそれぞれ示す。D = S / 1.85 + d (1) (however, d≦S≦10d) At least 2 of L a , L b , L c
1≧D+1.5d・・・・・・・・・・・・(2nd 1st
Figures (A) and 2 (A) show the case where there is a full interference area, and Figures 1 (B) and 2 (B) show the case where there is a partial interference area, respectively.
全面干渉域の場合には、（２）式を満足しない。In the case of a full interference region, equation (2) is not satisfied.
（１）式の定数１．８５はＳ／（Ｄ−ｄ）を実験により
求めたものである。（２）式の定数１．５は、噴流の流
れ状況により決定した。The constant 1.85 in equation (1) is S/(D-d) determined by experiment. The constant 1.5 in equation (2) was determined depending on the flow condition of the jet stream.
第３図に示すモデル装置により、各種噴出板１を用いて
鋼帯２の表面上における冷媒６（水）の干渉度の実験を
行なった。Using the model device shown in FIG. 3, experiments were conducted on the degree of interference of the refrigerant 6 (water) on the surface of the steel strip 2 using various types of ejection plates 1.
整流板５によって整流された後、噴出板１に設けた噴出
孔１１（第２図）から鋼帯２（本モデルの場合はアクリ
ル板）に衝突される。なお、噴流の可視化を図るために
着色粉体７を混入することが好ましい。After being rectified by the rectifier plate 5, it collides with the steel strip 2 (acrylic plate in the case of this model) through the ejection hole 11 (FIG. 2) provided in the ejection plate 1. Note that it is preferable to mix colored powder 7 in order to visualize the jet flow.
第４図はこの実験に用いた各種噴出板を示し、また、第
５図はその実験結果を示す、各図の（Ａ）。FIG. 4 shows various ejection plates used in this experiment, and FIG. 5 shows the experimental results. (A) of each figure.
（Ｂ）、（Ｃ）は互いに対応する。(B) and (C) correspond to each other.
第４図（Ａ）は多用形状噴出孔を千鳥に配列した噴出板
であり、本発明の寸法関係式（１）、（２）を満たして
いない。その結果は、第５図（Ａ）に示すように、鋼帯
のエツジ部分の冷媒は干渉せずに、早く流れて流出する
。しかし、鋼帯の中央部分には冷媒の亀甲状の干渉が生
じ、冷媒が滞留している。FIG. 4(A) shows an ejection plate in which multi-shaped ejection holes are arranged in a staggered manner, which does not satisfy the dimensional relational expressions (1) and (2) of the present invention. As a result, as shown in FIG. 5(A), the refrigerant at the edge of the steel strip flows quickly and flows out without interference. However, a hexagonal interference of the refrigerant occurs in the central part of the steel strip, and the refrigerant stagnates.
第４図（Ｂ）は（Ａ）図と同様に多用状噴出孔の４列千
鳥型噴出板ではあるが、本発明の寸法関係式（１）、（
２）を満たしている。その結果は、第５図（Ｂ）に示す
ように、鋼帯の中央部分で若干の滞留流れている。Although FIG. 4(B) is a four-row staggered ejection plate with multiple ejection holes similar to FIG. 4(A), the dimensional relational expression (1) of the present invention,
2) is satisfied. As a result, as shown in FIG. 5(B), there is some stagnation and flow in the central part of the steel strip.
第４図（Ｃ）はスリット型の噴出板である。その結果は
第５図（Ｃ）に示すように、鋼帯全表面にわたって冷媒
の干渉もなく円滑に流れている。FIG. 4(C) shows a slit-type ejection plate. As a result, as shown in FIG. 5(C), the refrigerant flows smoothly over the entire surface of the steel strip without any interference.
（へ）効 果
第６図に示すように、多回形状型の噴出板では干渉域を
除去すると、鋼帯の幅方向における熱伝達率が均一化さ
れるとともに、冷却能が向上する。(f) Effects As shown in FIG. 6, in the case of a multi-shaped ejection plate, if the interference region is removed, the heat transfer coefficient in the width direction of the steel strip is made uniform and the cooling capacity is improved.
よって、省エネルギおよび品質向上に効果をもたらすこ
とができる。なお、スリット型は冷却能がやや低下する
が均一な冷却は可能である。Therefore, energy saving and quality improvement can be achieved. Note that the slit type has a slightly lower cooling capacity, but uniform cooling is possible.
第１図は本発明の噴出板の寸法関係を示す平面図、第２
図は第１図の側面図。第３図はモデル実験装置の説明図
。第４図は各種噴出板の平面図。
第５図は第４図の各種噴出板による冷媒噴出結果を示す
鋼帯表面図。第６図は各種噴出板による冷却効果を示す
グラフ。
１：噴出板 ２：鋼帯
１１：噴出孔
第１図
第２図FIG. 1 is a plan view showing the dimensional relationship of the ejection plate of the present invention, and FIG.
The figure is a side view of Figure 1. FIG. 3 is an explanatory diagram of the model experimental apparatus. FIG. 4 is a plan view of various types of ejection plates. FIG. 5 is a steel strip surface diagram showing the results of refrigerant jetting by the various jetting plates shown in FIG. FIG. 6 is a graph showing the cooling effect of various types of ejection plates. 1: Ejection plate 2: Steel strip 11: Ejection hole Figure 1 Figure 2
Claims (1)
流を起こし、鋼帯を冷却する装置において、複数の噴出
孔を設けた噴出板をかいして鋼帯表面に冷媒を噴射し、
互いに隣接する３個の噴出孔のうちの少なくとも２個の
噴出口の寸法関係を下記の式を満たすように設定するこ
とを特長とした鋼帯の冷却装置。 Ｄ＝Ｓ／１．８５＋ｄ・・・（１） （ただし、Ｓ＝ｄ〜１０ｄの範囲） Ｌａ、ｂ、ｃ≧Ｄ＋１．５ｄ・・・（２） ｄ：噴出孔口径 Ｄ：衝突噴流口径 Ｓ：噴出孔から鋼帯表面までの距離 Ｌａ、ｂ、ｃ：互いに隣接する３個の噴出口の相互間距
離[Claims] In an apparatus for cooling a steel strip by spraying a refrigerant onto the surface of the steel strip to cause forced convection in the refrigerant on the surface of the steel strip, the surface of the steel strip is Inject refrigerant to
A cooling device for a steel strip, characterized in that the dimensional relationship between at least two of three jet holes adjacent to each other is set so as to satisfy the following formula. D=S/1.85+d...(1) (However, S=d to 10d range) La, b, c≧D+1.5d...(2) d: Nozzle diameter D: Collision jet diameter S : Distance from the nozzle to the steel strip surface La, b, c: Distance between three adjacent nozzles
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6544787A JPS63230830A (en) | 1987-03-19 | 1987-03-19 | Apparatus for cooling steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6544787A JPS63230830A (en) | 1987-03-19 | 1987-03-19 | Apparatus for cooling steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63230830A true JPS63230830A (en) | 1988-09-27 |
Family
ID=13287399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6544787A Pending JPS63230830A (en) | 1987-03-19 | 1987-03-19 | Apparatus for cooling steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63230830A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11173646A (en) * | 1997-12-10 | 1999-07-02 | Mitsubishi Heavy Ind Ltd | Air conditioning outlet grill |
| JP2006284345A (en) * | 2005-03-31 | 2006-10-19 | Shimadzu Corp | Sample introduction device for gas chromatograph |
| JP2007277668A (en) * | 2006-04-10 | 2007-10-25 | Nippon Steel Corp | Steel strip cooling apparatus |
| WO2023248389A1 (en) * | 2022-06-22 | 2023-12-28 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Apparatus for cooling metal strip, heat treatment facility for metal strips, and method for cooling metal strip |
-
1987
- 1987-03-19 JP JP6544787A patent/JPS63230830A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11173646A (en) * | 1997-12-10 | 1999-07-02 | Mitsubishi Heavy Ind Ltd | Air conditioning outlet grill |
| JP2006284345A (en) * | 2005-03-31 | 2006-10-19 | Shimadzu Corp | Sample introduction device for gas chromatograph |
| JP2007277668A (en) * | 2006-04-10 | 2007-10-25 | Nippon Steel Corp | Steel strip cooling apparatus |
| WO2023248389A1 (en) * | 2022-06-22 | 2023-12-28 | Ｐｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｊａｐａｎ株式会社 | Apparatus for cooling metal strip, heat treatment facility for metal strips, and method for cooling metal strip |
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