JPH0461046B2 - - Google Patents
Info
- Publication number
- JPH0461046B2 JPH0461046B2 JP32987387A JP32987387A JPH0461046B2 JP H0461046 B2 JPH0461046 B2 JP H0461046B2 JP 32987387 A JP32987387 A JP 32987387A JP 32987387 A JP32987387 A JP 32987387A JP H0461046 B2 JPH0461046 B2 JP H0461046B2
- Authority
- JP
- Japan
- Prior art keywords
- gas supply
- flange
- tube
- supply chamber
- pipe
- 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
Links
- 239000007789 gas Substances 0.000 description 53
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000011449 brick Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、３重管羽口において夫々の管を取替
え可能とする炉低への取り付け構造に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a structure for attaching a triple-pipe tuyere to a furnace bottom, which allows each tube to be replaced.
（従来の技術）
製鋼工場において多量のスクラツプを溶解する
技術においては、酸素の上底吹き法が用いられ
る。この底吹きは、酸素と共に含炭材料が吹込ま
れ、底吹き羽口の保護の点から炭化水素を吹込む
ことが望ましい。先行技術である特公昭56−8085
号公報の第７頁第13段には、この３者を吹込む３
重管羽口が開始されている。(Prior Art) An oxygen top-bottom blowing method is used as a technology for melting a large amount of scrap in a steel factory. In this bottom blowing, carbon-containing material is blown in together with oxygen, and from the viewpoint of protecting the bottom blowing tuyeres, it is desirable to blow in hydrocarbons. Prior art patent publication 1985-8085
In the 13th paragraph of page 7 of the bulletin, there is
Heavy pipe tuyeres have been started.
又、多重管羽口の構造は先行技術である特公昭
57−24397号公報の図面に示されている。この図
面に示されている多重管羽口は一体構造である。 In addition, the structure of the multi-tube tuyere is based on the prior art
This is shown in the drawing of Japanese Patent No. 57-24397. The multi-tube tuyeres shown in this drawing are of monolithic construction.
（発明が解決しようとする問題点）
多重管の夫々の管は均一に摩耗することはな
い。例えば、内管からキヤリヤーガスによつて含
炭材料の粉末を吹込む場合、内管は酸素及び炭化
水素吹込間隙より早期に摩耗することは明らかで
ある。それ故最外管及び中間管は未だ十分使用可
能であるのに、内管は使用不能となり、内管のみ
を取り替える必要が生じる。(Problems to be Solved by the Invention) Each tube of a multi-tube does not wear uniformly. For example, if powder of carbon-containing material is blown through the inner tube by means of a carrier gas, it is clear that the inner tube will wear out faster than the oxygen and hydrocarbon blowing gap. Therefore, while the outermost tube and the middle tube are still fully usable, the inner tube becomes unusable and only the inner tube needs to be replaced.
しかしながら、前期特公昭57−24397号公報の
図面に示された羽口構造では、夫々の管を容易に
取り替えることは困難である。 However, with the tuyere structure shown in the drawings of Japanese Patent Publication No. 57-24397, it is difficult to easily replace each tube.
本発明は上記の困難性を克服し、内管のみなら
ず内管と共に中間管の取り替容易な羽口の炉定へ
の取り付け構造を提供するものである。 The present invention overcomes the above-mentioned difficulties and provides a structure for attaching a tuyere to a furnace setting in which not only the inner tube but also the intermediate tube together with the inner tube can be easily replaced.
（問題点を解決するための手段）
上記目的を達成するための本発明の要旨は、炉
底に配置した３重管羽口において、
フランジの中央部に形成した第３ガスの供給
室と最外管３の下端を接合し、上記フランジを
炉低に着脱可能に取り付け、
第２ガスの供給管を接続した筒状の第２ガス
の供給室の上下に開口を有するフランジを設
け、上フランジには上記第３ガスの供給室への
第３ガス供給通路を形成すると共に中間管２の
下端を接合し、中間管２を最外管３内へ挿通す
ると共に上記第３ガスの供給通路と上記第３ガ
スの供給室を合致させて上記筒状の第２ガスの
供給室の上フランジを上記第３ガスの供給室を
有するフランジに着脱可能に取り付け、
開口を有するフランジの上端と内管１の下端
を接合し、内管１を中間管２内へ挿通し、
第１ガスの供給装置の上部に設けた開口を有
するフランジ、内管１に設けたフランジ及び筒
状の第２ガスの供給室の下フランジの３者を着
脱可能に締結する、
ことよりなることを特徴とする３重管羽口の炉低
取付け構造である。(Means for Solving the Problems) The gist of the present invention for achieving the above object is that, in a triple tube tuyere placed at the bottom of the furnace, a third gas supply chamber formed in the center of the flange and a third gas supply chamber formed in the center of the flange The lower end of the outer tube 3 is joined, the flange is removably attached to the furnace bottom, a cylindrical second gas supply chamber to which the second gas supply pipe is connected is provided with a flange having openings at the top and bottom of the second gas supply chamber, and the upper flange is connected to the upper flange. A third gas supply passage to the third gas supply chamber is formed, and the lower end of the intermediate pipe 2 is joined to the third gas supply passage, and the intermediate pipe 2 is inserted into the outermost pipe 3, and the third gas supply passage is connected to the third gas supply chamber. The upper flange of the cylindrical second gas supply chamber is removably attached to the flange having the third gas supply chamber by matching the third gas supply chamber, and the upper end of the flange having an opening and the inner tube. 1, the inner tube 1 is inserted into the intermediate tube 2, and a flange having an opening provided at the top of the first gas supply device, a flange provided on the inner tube 1, and a cylindrical second gas supply device are connected. This is a low-mounting structure for a triple-tube tuyere furnace, which is characterized by the following: three parts of the lower flange of the supply chamber are removably fastened.
本発明では上述の取付構造としたので、各着脱
部或いは締結部を外すことによつて、各管を夫々
容易に取替えることができるものである。 Since the present invention employs the above-mentioned mounting structure, each tube can be easily replaced by removing each attachment/detachment portion or fastening portion.
（実施例）
第１図及び第２図に本発明の一実施例の詳細図
を示す。(Embodiment) FIGS. 1 and 2 show detailed views of an embodiment of the present invention.
第１図及び第２図において、１は内管、２は中
間管、３は最外管を示し、これらは同心円状に配
置されている。そして第１ガスは内管１内４から
吹込まれ、第２ガスは内管１と中間管２の隙間５
から吹込まれ、更に第３ガスは中間管２と最外管
３の隙間６から吹込まれる。隙間５内には間隙を
一定に保つリブ７を有し、又隙間６は複数本のス
リツトによつて形成されている。 In FIGS. 1 and 2, 1 is an inner tube, 2 is an intermediate tube, and 3 is an outermost tube, which are arranged concentrically. The first gas is blown into the inner tube 1 from the inside 4, and the second gas is blown into the gap 5 between the inner tube 1 and the intermediate tube 2.
Further, the third gas is blown in from the gap 6 between the intermediate tube 2 and the outermost tube 3. A rib 7 is provided within the gap 5 to keep the gap constant, and the gap 6 is formed by a plurality of slits.
第２図において、８は炉底耐火物、９はスリー
ブレンガ、１０は鉄皮を夫々示している。１１は
最外管３を取り付けるためのフランジで、その背
面中央部には第３ガスのため供給室１２が形成さ
れており、最外管３の下端とフランジ１１とを最
外管３と第３ガスの供給室１２が連通する様に接
合する。 In FIG. 2, reference numeral 8 indicates a hearth bottom refractory, 9 indicates a sleeve brick, and 10 indicates an iron shell. Reference numeral 11 denotes a flange for attaching the outermost tube 3, and a supply chamber 12 for a third gas is formed in the center of the back surface of the flange. The three gas supply chambers 12 are joined so that they communicate with each other.
最外管３は、図示の如くスリーブレンガ９を挿
通し、フランジ１１を羽口金物１３に当接後、ノ
ズル押え金物１３′によりコツター１４の締付力
により固定する。コツター１４打込後はピン１５
を挿通してコツター１４の抜けを防止する。 As shown in the figure, the outermost tube 3 is inserted through the sleeve brick 9, and after the flange 11 is brought into contact with the tuyere metal fitting 13, it is fixed by the tightening force of the cotter 14 using the nozzle holding metal fitting 13'. Pin 15 after hitting Kotta 14
to prevent the connector 14 from coming off.
１６は筒状をした第２ガスの供給室で、この室
１６の横側には第２ガスの供給管１７が接続され
ている。上記第２ガスの供給室１６の上端には開
口を有する厚フランジ１８、下端には開口を有す
る薄フランジ１９が設けられていて、上厚フラン
ジ１８には第３ガスの供給通路２０が形成され、
第３ガスの供給管２０′が接続されている。第３
ガスの供給通路２０は羽口組立後は、第３ガスの
供給室１２に通じるものである。 Reference numeral 16 designates a cylindrical second gas supply chamber, and a second gas supply pipe 17 is connected to the side of this chamber 16 . A thick flange 18 having an opening is provided at the upper end of the second gas supply chamber 16, a thin flange 19 having an opening at the lower end, and a third gas supply passage 20 is formed in the upper thick flange 18. ,
A third gas supply pipe 20' is connected. Third
The gas supply passage 20 communicates with the third gas supply chamber 12 after the tuyere is assembled.
上記上厚フランジ１８の開口と中間管２の下端
は接合され、図示の如く中間管２を最外管３内へ
挿通後、上厚フランジ１８をフランジ１１へボル
ト・ナツト２１より取り付けるものである。２２
は開口を有するフランジで、このフランジ２２の
上端と内管１の下端とを接合する。そして図示の
如く内管１を中間管２内へ挿通するものである。
図中２３は、第１ガスの供給装置で、上端に開口
を有するフランジ２４が通り付けられている。 The opening of the upper thick flange 18 and the lower end of the intermediate tube 2 are joined, and after inserting the intermediate tube 2 into the outermost tube 3 as shown in the figure, the upper thick flange 18 is attached to the flange 11 with bolts and nuts 21. . 22
is a flange having an opening, which joins the upper end of this flange 22 and the lower end of the inner tube 1. Then, as shown in the figure, the inner tube 1 is inserted into the intermediate tube 2.
Reference numeral 23 in the figure represents a first gas supply device, through which a flange 24 having an opening at its upper end is passed.
而して、筒状の第２ガスの供給室１６の下部フ
ランジ１９、内管１に設けたフランジ２２、及び
第１ガスの供給装置２３に設けたフランジ２４の
３フランジをボルト・ナツト２５で締結するもの
である。尚、夫々のフランジ間には、パツキンを
介在させることは勿論である。 Then, the three flanges, the lower flange 19 of the cylindrical second gas supply chamber 16, the flange 22 provided on the inner pipe 1, and the flange 24 provided on the first gas supply device 23, are secured with bolts and nuts 25. This is to be concluded. Incidentally, it goes without saying that a gasket is interposed between each flange.
ガスの種類の一例を示せば、第１ガスは石炭粉
とN2ガスの混合ガス、第２ガスは酸素ガス、第
３ガスはLPGである。第１ガスは、第１ガス供
給装置２４→フランジ２２→内管１を通つて先端
から金属浴中へ吹込まれる。第２ガスは、第２ガ
ス供給管１７→筒状第２ガスの供給室１６→隙間
５を通つて先端から金属浴中へ吹込まれる。更に
第３ガスは、配管２０′→第３ガスの供給通路２
０→第３ガスの供給室１２→隙間（スリツト）６
を通つて先端から金属浴中へ吹込まれるものであ
る。 As an example of the types of gases, the first gas is a mixed gas of coal powder and N2 gas, the second gas is oxygen gas, and the third gas is LPG. The first gas is blown into the metal bath from the tip through the first gas supply device 24 → flange 22 → inner tube 1. The second gas is blown into the metal bath from the tip through the second gas supply pipe 17 → the cylindrical second gas supply chamber 16 → the gap 5. Further, the third gas is supplied through the pipe 20' → the third gas supply passage 2
0 → Third gas supply chamber 12 → Gap (slit) 6
It is blown into the metal bath through the tip.
本発明の実施例は上記のとおりであり、ボル
ト・ナツト２５を外し、第１ガスの供給装置２３
を取り外せば、内管１は中間管２内より抜き出す
ことができる。一方中間管２は、第２ガスの供給
管１７及び第３ガスの供給管２０′の部分１７′，
２０″を取り外しボルト・ナツト２１を外せば、
最外管３より抜き出すことができる。更に最外管
３はコツター１４を外すことで、スリーブレンガ
９から抜き出すことができるものである。 The embodiment of the present invention is as described above, and the bolt/nut 25 is removed and the first gas supply device 23 is removed.
By removing the inner tube 1, the inner tube 1 can be extracted from the intermediate tube 2. On the other hand, the intermediate pipe 2 includes a portion 17' of the second gas supply pipe 17 and the third gas supply pipe 20',
20'' and remove the bolt/nut 21,
It can be extracted from the outermost tube 3. Furthermore, the outermost tube 3 can be pulled out from the sleeve brick 9 by removing the connector 14.
更に第３ガスの供給を、その配管２０′から筒
状第２ガス供給室１６を炉底に取り付ける上厚フ
ランジ１８内を通して２０行なう様に構成してい
るので、この部分の構造がシンプルにして小型化
され、コンパクトな取付け構造が得られるもので
ある。 Furthermore, the third gas is supplied from the piping 20' through the upper thick flange 18 that attaches the cylindrical second gas supply chamber 16 to the bottom of the furnace, so the structure of this part can be simplified. It is possible to obtain a smaller and more compact mounting structure.
（発明の効果）
この様に、本発明の３重管羽口の炉底取付け構
造によれば、夫々の管の摩耗状況に応じて夫々の
管を単独で取り替えすることができ、極めて経済
性の高い３重管羽口が得られるものである。(Effects of the Invention) As described above, according to the triple tube tuyere bottom mounting structure of the present invention, each tube can be replaced individually depending on the wear condition of each tube, which is extremely economical. A triple-pipe tuyere with a high temperature can be obtained.
図面は本発明の実施例を示し、第１図は３重管
羽口の平面図、第２図は全体の縦断面説明図であ
る。
１……内管、２……中間管、３……最外管、１
１，１８，１９，２２，２５……フランジ、１２
……第３ガスの供給室、１６……第２ガスの筒状
供給室、２０……第３ガスの供給通路、２３……
第１ガスの供給装置。
The drawings show an embodiment of the present invention, and FIG. 1 is a plan view of a triple-pipe tuyere, and FIG. 2 is an explanatory longitudinal cross-sectional view of the entire structure. 1... Inner tube, 2... Middle tube, 3... Outermost tube, 1
1, 18, 19, 22, 25...flange, 12
...Third gas supply chamber, 16...Second gas cylindrical supply chamber, 20...Third gas supply passage, 23...
A first gas supply device.
Claims (1)
供給室と最外管３の下端を接合し、上記フラン
ジを炉低に着脱可能に取り付け、 第２ガスの供給管を接続した筒状の第２ガス
の供給室の上下に開口を有するフランジを設
け、上フランジには上記第３ガスの供給室への
第３ガス供給通路を形成すると共に中間管２の
下端を接合し、中間管２を最外管３内へ挿通す
ると共に上記第３ガスの供給通路と上記第３ガ
スの供給室を合致させて上記筒状の第２ガスの
供給室の上フランジを上記第３ガスの供給室を
有するフランジに着脱可能に取り付け、 開口を有するフランジの上端と内管１の下端
を接合し、内管１を中間管２内へ挿通し、 第１ガスの供給装置の上部に設けた開口を有
するフランジ、内管１に設けたフランジ及び筒
状の第２ガスの供給室の下フランジの３者を着
脱可能に締結する、 ことよりなることを特徴とする３重管羽口の炉低
取付け構造。[Claims] 1. A third gas supply chamber formed in the center of the flange is joined to the lower end of the outermost tube 3, the flange is removably attached to the furnace bottom, and a second gas supply pipe is connected. A flange having openings at the top and bottom of the cylindrical second gas supply chamber is provided, and the upper flange forms a third gas supply passage to the third gas supply chamber, and the lower end of the intermediate pipe 2 is joined to the upper flange. , insert the intermediate pipe 2 into the outermost pipe 3, align the third gas supply passage with the third gas supply chamber, and connect the upper flange of the cylindrical second gas supply chamber to the third gas supply chamber. It is removably attached to a flange having a gas supply chamber, the upper end of the flange having an opening and the lower end of the inner tube 1 are joined, the inner tube 1 is inserted into the intermediate tube 2, and the inner tube 1 is inserted into the upper part of the first gas supply device. A triple-pipe tuyere characterized by the following: a flange having an opening provided therein, a flange provided on the inner pipe 1, and a lower flange of the cylindrical second gas supply chamber are removably fastened to each other. Furnace low mounting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32987387A JPH01172507A (en) | 1987-12-28 | 1987-12-28 | Construction for fitting triple pie tuyere to furnace bottom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32987387A JPH01172507A (en) | 1987-12-28 | 1987-12-28 | Construction for fitting triple pie tuyere to furnace bottom |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01172507A JPH01172507A (en) | 1989-07-07 |
| JPH0461046B2 true JPH0461046B2 (en) | 1992-09-29 |
Family
ID=18226197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32987387A Granted JPH01172507A (en) | 1987-12-28 | 1987-12-28 | Construction for fitting triple pie tuyere to furnace bottom |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01172507A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996037632A1 (en) * | 1995-05-25 | 1996-11-28 | Japan Casting & Forging Corporation | Nozzle for blowing gas into molten metal and usage thereof |
-
1987
- 1987-12-28 JP JP32987387A patent/JPH01172507A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996037632A1 (en) * | 1995-05-25 | 1996-11-28 | Japan Casting & Forging Corporation | Nozzle for blowing gas into molten metal and usage thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01172507A (en) | 1989-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |