JP2022054473A - Tuyere for blast furnace - Google Patents

Tuyere for blast furnace Download PDF

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JP2022054473A
JP2022054473A JP2020161544A JP2020161544A JP2022054473A JP 2022054473 A JP2022054473 A JP 2022054473A JP 2020161544 A JP2020161544 A JP 2020161544A JP 2020161544 A JP2020161544 A JP 2020161544A JP 2022054473 A JP2022054473 A JP 2022054473A
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tuyere
water channel
cylinder portion
separation wall
inner cylinder
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JP7066218B2 (en
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由記 古森
Yuki Komori
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GOTO GOKIN KK
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GOTO GOKIN KK
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Abstract

To provide a tuyere for a blast furnace by which the operation of the blast furnace may be kept without stopping the operation even when the tuyere is damaged.SOLUTION: A tuyere body part 2 includes: an inner cylinder part 3 on which a through hole 16 is formed; an outer cylinder part 4 which is provided on the outside of the inner cylinder part 3; a separation wall part 5 which is provided between the inner cylinder part 3 and the outer cylinder part 4, and partially in contact with the inner cylinder part 3, the outer cylinder part 4 and the outer shell cover 10 to independently form a main water path 13 (water channels S1-S5) and a sub water channel 12 (water channels S11-S13) between the inner cylinder part 3 and the outer cylinder part 4; and a main water supply port 8, a main drain port, a sub water supply port 6 and a sub drain port which are formed on the back surface of the tuyere body part 2. An outer shell cover 10 partially contacting with the separation wall part 5 is attached to the tip of the outer cylinder 4. A tip cover 11 is attached to the tip of the tuyere body part 2.SELECTED DRAWING: Figure 1

Description

本発明は、羽口内に親水路及び子水路を夫々独立して形成した高炉用羽口に関する。 The present invention relates to a blast furnace tuyere in which a hydrophilic channel and a subwater channel are independently formed in the tuyere.

従来の高炉用羽口において、羽口本体は、外筒、この外筒内に同芯的に組み付けられた内筒、先端カバーと、外筒と内筒、先端カバー、内筒内に設けられた螺旋流路を経由して排水口に至る流路から構成されていた。
そして、万一羽口が溶損した場合には、一旦冷却水の循環を停止して羽口の損傷箇所を修理するか、羽口本体の交換を行っていたため、羽口の溶損事故が発生する度に高炉の運転を停止する必要があり、操業効率が低下する大きな要因となっていた。 In the conventional blast furnace tuyere, the tuyere body is provided in the outer cylinder, the inner cylinder concentrically assembled in the outer cylinder, the tip cover, and the outer cylinder and the inner cylinder, the tip cover, and the inner cylinder. It consisted of a flow path leading to the drainage port via the spiral flow path.
In the unlikely event that the tuyere is melted, the cooling water circulation is temporarily stopped to repair the damaged part of the tuyere, or the tuyere body is replaced, resulting in a melting accident of the tuyere. It was necessary to stop the operation of the blast furnace each time it occurred, which was a major factor in reducing operational efficiency.

特開平２０１２－１５３９７３号公報Japanese Unexamined Patent Publication No. 2012-153973

本発明は、叙上の理由により提案されるものであって、羽口損傷時にも操業を停止することなく、高炉の操業を継続することを可能とする高炉用羽口を提供することを目的とする。 The present invention has been proposed for the above reasons, and an object of the present invention is to provide a blast furnace tuyere that enables the operation of a blast furnace to be continued without stopping the operation even when the tuyere is damaged. And.

上記目的を達成するため、請求項１に記載の発明は、羽口本体部及び外郭カバー及び先端カバーから構成される高炉用羽口であって、前記羽口本体部は、貫通穴を形成する内筒部と、この内筒部の外側に設けられた外筒部と、前記内筒部と外筒部間に設けられ、一部が前記内筒部と外筒部と外郭カバーに接触して前記内筒部と外筒部間に親水路と子水路を形成する分離壁部と、前記羽口本体部の背面に形成された親給水口、親排水口、子給水口及び子排水口と、から成り、前記外筒部の先端には前記分離壁部と一部が接触するように外郭カバーが取り付けられていること、前記羽口本体部の先端には先端カバーが取り付けられていること、前記親水路は、前記外筒部と前記分離壁部間に形成され、前記親給水口から前記羽口本体部の先端側に延びる水路Ｓ１と、前記外郭カバーと前記分離壁部間に形成された螺旋状の水路Ｓ２及び水路Ｓ３と、前記内筒部と前記分離壁部間に形成された水路Ｓ４と、前記水路Ｓ３及び水路Ｓ４間に設けられた水路移行部と、前記外筒部と前記分離壁部間及び前記内筒部と前記分離壁部間に形成され、前記親排水口に繋がる水路Ｓ５と、から成り、前記子水路は、前記内筒部と前記分離壁部間に形成され、前記子給水口から前記羽口本体部の先端側に延びる水路Ｓ１１と、前記羽口本体部の先端と前記先端カバー間に形成された水路Ｓ１２と、前記内筒部と前記分離壁部間に形成され、前記子排水口に繋がる水路Ｓ１３から成ることを特徴とするものである。 In order to achieve the above object, the invention according to claim 1 is a tuyere for a blast furnace composed of a tuyere main body portion, an outer cover and a tip cover, and the tuyere main body portion forms a through hole. The inner cylinder portion, the outer cylinder portion provided on the outside of the inner cylinder portion, and the inner cylinder portion and the outer cylinder portion are provided, and a part of the inner cylinder portion comes into contact with the inner cylinder portion, the outer cylinder portion, and the outer shell cover. A separation wall that forms a hydrophilic passage and a child water passage between the inner cylinder and the outer cylinder, and a parent water supply port, a parent drainage port, a child water supply port, and a child drainage port formed on the back surface of the tuyere main body. An outer cover is attached to the tip of the outer cylinder portion so as to partially contact the separation wall portion, and a tip cover is attached to the tip of the tuyere main body portion. That is, the hydrophilic passage is formed between the outer cylinder portion and the separation wall portion, and extends from the parent water supply port to the tip end side of the tuyere main body portion, and between the outer shell cover and the separation wall portion. The spiral water passages S2 and S3 formed, the water passage S4 formed between the inner cylinder portion and the separation wall portion, the water passage transition portion provided between the water passages S3 and the water passage S4, and the outer cylinder. It is composed of a water channel S5 formed between a portion and the separation wall portion and between the inner cylinder portion and the separation wall portion and connected to the parent drain port, and the child water channel is between the inner cylinder portion and the separation wall portion. A water channel S11 formed in the water supply port and extending from the child water supply port to the tip end side of the tuyere body portion, a water channel S12 formed between the tip end of the tuyere body portion and the tip cover, and the inner cylinder portion and the separation. It is characterized in that it is formed between the walls and is composed of a water channel S13 connected to the child drainage port.

また、請求項２に記載の発明は、請求項１に記載の高炉用羽口において、前記親水路は、前記外筒部と前記分離壁部間に形成され、前記親給水口から前記羽口本体部の先端側に延びる水路Ｓ６と、前記外郭カバーと前記分離壁部間に形成された平行な２本の水路Ｓ７と、前記内筒部と前記分離壁部間に形成された平行な２本の水路Ｓ８と、前記水路Ｓ７及び水路Ｓ８間に設けられた水路移行部と、前記外筒部と前記分離壁部間及び前記内筒部と前記分離壁部間に形成され、前記子排水口に繋がる水路Ｓ９と、から成ることを特徴とするものである。 Further, in the invention according to claim 2, in the blast furnace tuyere according to claim 1, the hydrophilic passage is formed between the outer cylinder portion and the separation wall portion, and the tuyere is formed from the parent water supply port to the tuyere. A water channel S6 extending to the tip end side of the main body portion, two parallel water channels S7 formed between the outer cover and the separation wall portion, and a parallel 2 formed between the inner cylinder portion and the separation wall portion. The water channel S8 of the book, the water channel transition portion provided between the water channel S7 and the water channel S8, the outer cylinder portion and the separation wall portion, and the inner cylinder portion and the separation wall portion are formed to form the child drainage. It is characterized by being composed of a waterway S9 connected to the mouth.

本発明によれば、高炉の稼動中に羽口の先端部が破損して冷却水の漏出が発生した場合、特許文献１に係る発明では先端水路から外郭の螺旋水路を止める構造となっているが、本発明においては子水路と親水路が夫々独立しているため、子水路である羽口先端の水路を止めて、親水路である羽口外郭の水路側の冷却水の循環のみで高炉の稼動を継続することが可能となる。 According to the present invention, when the tip of the tuyere is damaged during the operation of the blast furnace and the cooling water leaks, the invention according to Patent Document 1 has a structure for stopping the outer spiral channel from the tip channel. However, in the present invention, since the child channel and the water channel are independent of each other, the water channel at the tip of the tuyere, which is the child channel, is stopped, and only the circulation of the cooling water on the water channel side of the tuyere outer shell, which is the hydrophilic channel, is used for the blast furnace. It will be possible to continue the operation of.

高炉用羽口の側断面図である。It is a side sectional view of the tuyere for a blast furnace. 高炉用羽口の背面図である。It is a rear view of the blast furnace tuyere. 冷却水路の説明図である。It is explanatory drawing of the cooling water channel. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 高炉用羽口の側断面図である。It is a side sectional view of the tuyere for a blast furnace. 高炉用羽口の背面図である。It is a rear view of the blast furnace tuyere. 冷却水路の説明図である。It is explanatory drawing of the cooling water channel. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 高炉用羽口の背面斜視図である。It is a rear perspective view of the tuyere for a blast furnace.

以下、図１～図１１に基づいて本発明の実施例を詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 11.

図１は高炉用羽口の側断面図、図２は高炉用羽口の背面図、図３は冷却水路の説明図、図４、図５は羽口本体部の斜視図であって、符号の１は本発明に係る高炉用羽口、２は羽口本体部、３は内筒部、４は内筒部３の外側に設けられた外筒部、５は内筒部３と外筒部４間に設けられ、一部が内筒部３と外筒部４と外郭カバー１０に接触して内筒部３と外筒部４間に親水路１３と子水路１２を形成する分離壁部、６は冷却水が供給される子給水口、７は冷却水が排出される子排水口、８は冷却水が供給される親給水口、９は冷却水が排出される親排水口、１０は外筒部４の先端に取り付けられ、分離壁部５と一部が接触する外郭カバー、１１は羽口本体部２の先端に取り付けられた先端カバー、１６は貫通穴である。 1 is a side sectional view of the blast furnace tuyere, FIG. 2 is a rear view of the blast furnace tuyere, FIG. 3 is an explanatory view of a cooling water channel, and FIGS. 1 is a blast furnace tuyere according to the present invention, 2 is a tuyere main body, 3 is an inner cylinder, 4 is an outer cylinder provided on the outside of the inner cylinder 3, and 5 is an inner cylinder 3 and an outer cylinder. A separation wall provided between the portions 4 and partially in contact with the inner cylinder portion 3, the outer cylinder portion 4 and the outer shell cover 10 to form a hydrophilic passage 13 and a child water channel 12 between the inner cylinder portion 3 and the outer cylinder portion 4. Part, 6 is a child water supply port to which cooling water is supplied, 7 is a child drainage port to which cooling water is discharged, 8 is a parent water supply port to which cooling water is supplied, and 9 is a parent drainage port to which cooling water is discharged. Reference numeral 10 is an outer shell cover attached to the tip of the outer cylinder portion 4 and partially contacting the separation wall portion 5, 11 is a tip cover attached to the tip of the tuyere main body portion 2, and 16 is a through hole.

符号の１２は水路Ｓ１１、水路Ｓ１２及び水路Ｓ１３で構成された子水路、１３は水路Ｓ１、水路Ｓ２、水路Ｓ３、水路Ｓ４及び水路Ｓ５で構成された親水路である。 Reference numeral 12 is a sub-water channel composed of a water channel S11, a water channel S12 and a water channel S13, and 13 is a hydrophilic channel composed of a water channel S1, a water channel S2, a water channel S3, a water channel S4 and a water channel S5.

子水路１２における冷却水の流れは、羽口本体部２の背面に形成された子給水口６から給水された冷却水が、内筒部３と分離壁部５間に形成され、羽口本体部２の先端側に延びる水路Ｓ１１を通り、先端カバー１１と羽口本体部２間に形成された水路Ｓ１２を周回した後、内筒部３と分離壁部５間に形成された水路Ｓ１３を通り、羽口本体部２の背面に形成された子排水口７から排出される構成となっており、これらを繰り返すことで冷却水を循環させ、主に羽口本体部２の先端と先端カバー１１を冷却するものである。 As for the flow of the cooling water in the child channel 12, the cooling water supplied from the child water supply port 6 formed on the back surface of the tuyere main body 2 is formed between the inner cylinder portion 3 and the separation wall portion 5, and the tuyere main body is formed. After passing through the water channel S11 extending to the tip end side of the portion 2 and circulating the water channel S12 formed between the tip cover 11 and the tuyere main body portion 2, the water channel S13 formed between the inner cylinder portion 3 and the separation wall portion 5 is passed. As it passes, it is configured to be discharged from the child drain port 7 formed on the back surface of the tuyere main body 2, and by repeating these, the cooling water is circulated and mainly the tip of the tuyere main body 2 and the tip cover. It cools 11.

親水路１３における冷却水の流れは、羽口本体部２の背面に形成された親給水口８から給水された冷却水が、外筒部４と分離壁部５間に形成され、羽口本体部の先端側に延びる水路Ｓ１を通り、外郭カバー１０と分離壁部５間に形成された螺旋状の水路Ｓ２及び水路Ｓ３を通った後、水路移行部１５Ａを経由して内筒部３と分離壁部５間に形成された水路Ｓ４を通り、次に内筒部３と分離壁部５間及び外筒部４と分離壁部５間に形成された水路Ｓ５を通り、羽口本体部２の背面に形成された親排水口９から排出される構成となっており、これらを繰り返すことで冷却水を循環させる。 As for the flow of the cooling water in the hydrophilic passage 13, the cooling water supplied from the parent water supply port 8 formed on the back surface of the tuyere main body 2 is formed between the outer cylinder portion 4 and the separation wall portion 5, and the tuyere main body is formed. After passing through the water channel S1 extending to the tip end side of the portion, the spiral water channel S2 and the water channel S3 formed between the outer cover 10 and the separation wall portion 5, and then the inner cylinder portion 3 via the water channel transition portion 15A. It passes through the water channel S4 formed between the separation wall portions 5, then passes through the water channel S5 formed between the inner cylinder portion 3 and the separation wall portion 5 and between the outer cylinder portion 4 and the separation wall portion 5, and the tuyere main body portion. It is configured to be discharged from the parent drain port 9 formed on the back surface of No. 2, and by repeating these, the cooling water is circulated.

親水路１３は主に羽口本体部２の胴体部（内筒部３と外筒部４）を冷却するものであり、親水路１３内を流れる冷却水のみでも高炉用羽口１に対して十分な冷却能力が得られるように設計されている。 The hydrophilic passage 13 mainly cools the body portion (inner cylinder portion 3 and outer cylinder portion 4) of the tuyere main body 2, and only the cooling water flowing in the hydrophilic passage 13 is used for the blast furnace tuyere 1. It is designed to provide sufficient cooling capacity.

本実施例においては、図４、図５に示されるように、水路Ｓ２及び水路Ｓ３で羽口本体部２の先端側に延びる二段の螺旋状の水路（螺旋水路）を構成しているが、この螺旋水路は二段に限定されるものではなく、三段以上の螺旋水路としてもよい。 In this embodiment, as shown in FIGS. 4 and 5, a two-stage spiral water channel (spiral water channel) extending toward the tip end side of the tuyere main body 2 is configured in the water channel S2 and the water channel S3. , This spiral channel is not limited to two stages, and may be a spiral channel having three or more stages.

図６は高炉用羽口１の側断面図、図７は高炉用羽口１の背面図、図８は冷却水路の説明図、図９、図１０は羽口本体部２の斜視図であって、親水路１４以外の各部の名称や機能、子水路１２における冷却水の流れの構成については実施例１と同様である。 6 is a side sectional view of the blast furnace tuyere 1, FIG. 7 is a rear view of the blast furnace tuyere 1, FIG. 8 is an explanatory view of a cooling water channel, and FIGS. 9 and 10 are perspective views of the tuyere main body 2. The names and functions of each part other than the hydrophilic passage 14 and the configuration of the flow of the cooling water in the child water passage 12 are the same as those in the first embodiment.

符号の１４は水路Ｓ６、水路Ｓ７、水路Ｓ８及び水路Ｓ９で構成された親水路である。 Reference numeral 14 is a hydrophilic channel composed of a water channel S6, a water channel S7, a water channel S8, and a water channel S9.

本実施例の親水路１４における冷却水の流れは、羽口本体部２の背面に形成された親給水口８から給水された冷却水が、外筒部４と分離壁部５間に形成され、羽口本体部の先端側に延びる水路Ｓ６を通り、分岐しながら外郭カバー１０と分離壁部５間に形成された平行な２本の水路Ｓ７を通った後、水路移行部１５Ｂを経由して内筒部３と分離壁部５間に形成された平行な２本の水路Ｓ８を通り、次に内筒部３と分離壁部５間及び外筒部４と分離壁部５間に形成された水路Ｓ９を通り、羽口本体部２の背面に形成された親排水口９から排出される構成となっており、これらを繰り返すことで冷却水を循環させる。 In the flow of the cooling water in the hydrophilic passage 14 of this embodiment, the cooling water supplied from the parent water supply port 8 formed on the back surface of the tuyere main body 2 is formed between the outer cylinder portion 4 and the separation wall portion 5. , Passing through the water channel S6 extending to the tip side of the tuyere body portion, passing through two parallel water channels S7 formed between the outer cover 10 and the separation wall portion 5 while branching, and then passing through the water channel transition portion 15B. It passes through two parallel water channels S8 formed between the inner cylinder portion 3 and the separation wall portion 5, and then formed between the inner cylinder portion 3 and the separation wall portion 5 and between the outer cylinder portion 4 and the separation wall portion 5. It is configured to be discharged from the parent drain port 9 formed on the back surface of the tuyere main body 2 through the water channel S9, and the cooling water is circulated by repeating these.

以上のように、本発明に係る高炉用羽口１は、子水路１２と親水路１３、１４の二系統の水路が夫々独立した構成となっているため、子水路１２側において損傷が発生した場合、子水路１２側の冷却水の循環を止め、親水路１３、１４側のみ冷却水を循環させることで高炉用羽口１を冷却し、高炉の操業を継続することができる。 As described above, in the blast furnace tuyere 1 according to the present invention, since the two water channels of the child channel 12 and the water channels 13 and 14 are independent of each other, damage occurs on the child channel 12 side. In this case, the blast furnace tuyere 1 can be cooled and the operation of the blast furnace can be continued by stopping the circulation of the cooling water on the subwater channel 12 side and circulating the cooling water only on the hydrophilic channels 13 and 14 sides.

１ 高炉用羽口
２ 羽口本体部
３ 内筒部
４ 外筒部
５ 分離壁部
６ 子給水口
７ 子排水口
８ 親給水口
９ 親排水口
１０ 外郭カバー
１１ 先端カバー
１２ 子水路
１３ 親水路
１４ 親水路
１５Ａ 水路移行部
１５Ｂ 水路移行部
１６ 貫通穴
Ｓ１～Ｓ９ 水路
Ｓ１１～Ｓ１３ 水路 1 blast furnace tuyere 2 tuyere main body 3 inner cylinder 4 outer cylinder 5 separation wall 6 child water supply port 7 child drainage port 8 parent water supply port 9 parent drainage port 10 outer cover 11 tip cover 12 child channel 13 hydrophilic channel 14 Waterway 15A Waterway transition 15B Waterway transition 16 Through holes S1 to S9 Waterways S11 to S13 Waterways

本発明は、羽口内に親水路及び子水路を夫々独立して形成した高炉用羽口に関する。 The present invention relates to a blast furnace tuyere in which a hydrophilic channel and a subwater channel are independently formed in the tuyere.

従来の高炉用羽口において、羽口本体は、外筒、この外筒内に同芯的に組み付けられた内筒、先端カバーと、外筒と内筒、先端カバー、内筒内に設けられた螺旋流路を経由して排水口に至る流路から構成されていた。
そして、万一羽口が溶損した場合には、一旦冷却水の循環を停止して羽口の損傷箇所を修理するか、羽口本体の交換を行っていたため、羽口の溶損事故が発生する度に高炉の運転を停止する必要があり、操業効率が低下する大きな要因となっていた。 In the conventional blast furnace tuyere, the tuyere body is provided in the outer cylinder, the inner cylinder concentrically assembled in the outer cylinder, the tip cover, and the outer cylinder and the inner cylinder, the tip cover, and the inner cylinder. It consisted of a flow path leading to the drainage port via the spiral flow path.
In the unlikely event that the tuyere is melted, the cooling water circulation is temporarily stopped to repair the damaged part of the tuyere, or the tuyere body is replaced, resulting in a melting accident of the tuyere. It was necessary to stop the operation of the blast furnace each time it occurred, which was a major factor in reducing operational efficiency.

特開平２０１２－１５３９７３号公報Japanese Unexamined Patent Publication No. 2012-153973

本発明は、叙上の理由により提案されるものであって、羽口損傷時にも操業を停止することなく、高炉の操業を継続することを可能とする高炉用羽口を提供することを目的とする。 The present invention has been proposed for the above reasons, and an object of the present invention is to provide a blast furnace tuyere that enables the operation of a blast furnace to be continued without stopping the operation even when the tuyere is damaged. And.

上記目的を達成するため、請求項１に記載の発明は、羽口本体部及び外郭カバー及び先端カバーから構成される高炉用羽口であって、前記羽口本体部は、貫通穴を形成する内筒部と、この内筒部の外側に設けられた外筒部と、前記内筒部と外筒部間に設けられ、一部が前記内筒部と外筒部と外郭カバーに接触して前記内筒部と外筒部間に親水路と子水路を形成する分離壁部と、前記羽口本体部の背面に形成された親給水口、親排水口、子給水口及び子排水口と、から成り、前記外筒部の先端には前記分離壁部と一部が接触するように外郭カバーが取り付けられていること、前記羽口本体部の先端には先端カバーが取り付けられていること、前記親水路は、前記外筒部と前記分離壁部間に形成され、前記親給水口から前記羽口本体部の先端側に延びる水路Ｓ１と、前記外郭カバーと前記分離壁部間に形成された螺旋状の水路Ｓ２及び水路Ｓ３と、前記内筒部と前記分離壁部間に形成された水路Ｓ４と、前記水路Ｓ３及び水路Ｓ４間に設けられた水路移行部と、前記外筒部と前記分離壁部間及び前記内筒部と前記分離壁部間に形成され、前記親排水口に繋がる水路Ｓ５と、から成り、前記子水路は、前記内筒部と前記分離壁部間に形成され、前記子給水口から前記羽口本体部の先端側に延びる水路Ｓ１１と、前記羽口本体部の先端と前記先端カバー間に形成された水路Ｓ１２と、前記内筒部と前記分離壁部間に形成され、前記子排水口に繋がる水路Ｓ１３から成ることを特徴とするものである。 In order to achieve the above object, the invention according to claim 1 is a tuyere for a blast furnace composed of a tuyere main body portion, an outer cover and a tip cover, and the tuyere main body portion forms a through hole. The inner cylinder portion, the outer cylinder portion provided on the outside of the inner cylinder portion, and the inner cylinder portion and the outer cylinder portion are provided, and a part of the inner cylinder portion comes into contact with the inner cylinder portion, the outer cylinder portion, and the outer shell cover. A separation wall that forms a hydrophilic passage and a child water passage between the inner cylinder and the outer cylinder, and a parent water supply port, a parent drainage port, a child water supply port, and a child drainage port formed on the back surface of the tuyere main body. An outer cover is attached to the tip of the outer cylinder portion so as to partially contact the separation wall portion, and a tip cover is attached to the tip of the tuyere main body portion. That is, the hydrophilic passage is formed between the outer cylinder portion and the separation wall portion, and extends from the parent water supply port to the tip end side of the tuyere main body portion, and between the outer shell cover and the separation wall portion. The spiral water passages S2 and S3 formed, the water passage S4 formed between the inner cylinder portion and the separation wall portion, the water passage transition portion provided between the water passages S3 and the water passage S4, and the outer cylinder. It is composed of a water channel S5 formed between a portion and the separation wall portion and between the inner cylinder portion and the separation wall portion and connected to the parent drain port, and the child water channel is between the inner cylinder portion and the separation wall portion. A water channel S11 formed in the water supply port and extending from the child water supply port to the tip end side of the tuyere body portion, a water channel S12 formed between the tip end of the tuyere body portion and the tip cover, and the inner cylinder portion and the separation. It is characterized in that it is formed between the walls and is composed of a water channel S13 connected to the child drainage port.

また、請求項２に記載の発明は、羽口本体部及び外郭カバー及び先端カバーから構成される高炉用羽口であって、前記羽口本体部は、貫通穴を形成する内筒部と、この内筒部の外側に設けられた外筒部と、前記内筒部と外筒部間に設けられ、一部が前記内筒部と外筒部と外郭カバーに接触して前記内筒部と外筒部間に親水路と子水路を形成する分離壁部と、前記羽口本体部の背面に形成された親給水口、親排水口、子給水口及び子排水口と、から成り、前記外筒部の先端には前記分離壁部と一部が接触するように外郭カバーが取り付けられていること、前記羽口本体部の先端には先端カバーが取り付けられていること、前記親水路は、前記外筒部と前記分離壁部間に形成され、前記親給水口から前記羽口本体部の先端側に延びる水路Ｓ６と、前記外郭カバーと前記分離壁部間に形成された平行な２本の水路Ｓ７と、前記内筒部と前記分離壁部間に形成された平行な２本の水路Ｓ８と、前記水路Ｓ７及び水路Ｓ８間に設けられた水路移行部と、前記外筒部と前記分離壁部間及び前記内筒部と前記分離壁部間に形成され、前記子排水口に繋がる水路Ｓ９と、から成り、前記子水路は、前記内筒部と前記分離壁部間に形成され、前記子給水口から前記羽口本体部の先端側に延びる水路Ｓ１１と、前記羽口本体部の先端と前記先端カバー間に形成された水路Ｓ１２と、前記内筒部と前記分離壁部間に形成され、前記子排水口に繋がる水路Ｓ１３から成ることを特徴とするものである。 Further, the invention according to claim 2 is a tuyere for a blast furnace composed of a tuyere main body portion, an outer cover and a tip cover, and the tuyere main body portion includes an inner cylinder portion forming a through hole and an inner cylinder portion. The outer cylinder portion provided on the outside of the inner cylinder portion is provided between the inner cylinder portion and the outer cylinder portion, and a part of the inner cylinder portion comes into contact with the inner cylinder portion, the outer cylinder portion, and the outer shell cover to contact the inner cylinder portion. It is composed of a separation wall portion forming a hydrophilic passage and a child water passage between the outer cylinder portion and a parent water supply port, a parent drainage port, a child water supply port and a child drainage port formed on the back surface of the tuyere main body portion. An outer cover is attached to the tip of the outer cylinder portion so as to partially contact the separation wall portion, a tip cover is attached to the tip of the tuyere main body portion, and the hydrophilic path. Is a parallel water channel S6 formed between the outer cylinder portion and the separation wall portion and extending from the parent water supply port to the tip end side of the tuyere main body portion, and parallel formed between the outer shell cover and the separation wall portion. Two water passages S7, two parallel water passages S8 formed between the inner cylinder portion and the separation wall portion, a water passage transition portion provided between the water passage S7 and the water passage S8, and the outer cylinder portion. And the water channel S9 formed between the separation wall portion and between the inner cylinder portion and the separation wall portion and connected to the child drain port, and the child water channel is between the inner cylinder portion and the separation wall portion. A water channel S11 formed and extending from the child water supply port to the tip end side of the tuyere body portion, a water channel S12 formed between the tip end of the tuyere body portion and the tip cover, and an inner cylinder portion and the separation wall. It is characterized in that it is composed of a water channel S13 formed between the portions and connected to the child drainage port .

本発明によれば、高炉の稼動中に羽口の先端部が破損して冷却水の漏出が発生した場合、特許文献１に係る発明では先端水路から外郭の螺旋水路を止める構造となっているが、本発明においては子水路と親水路が夫々独立しているため、子水路である羽口先端の水路を止めて、親水路である羽口外郭の水路側の冷却水の循環のみで高炉の稼動を継続することが可能となる。 According to the present invention, when the tip of the tuyere is damaged during the operation of the blast furnace and the cooling water leaks, the invention according to Patent Document 1 has a structure for stopping the outer spiral channel from the tip channel. However, in the present invention, since the child channel and the water channel are independent of each other, the water channel at the tip of the tuyere, which is the child channel, is stopped, and only the circulation of the cooling water on the water channel side of the tuyere outer shell, which is the hydrophilic channel, is used for the blast furnace. It will be possible to continue the operation of.

高炉用羽口の側断面図である。It is a side sectional view of the tuyere for a blast furnace. 高炉用羽口の背面図である。It is a rear view of the blast furnace tuyere. 冷却水路の説明図である。It is explanatory drawing of the cooling water channel. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 高炉用羽口の側断面図である。It is a side sectional view of the tuyere for a blast furnace. 高炉用羽口の背面図である。It is a rear view of the blast furnace tuyere. 冷却水路の説明図である。It is explanatory drawing of the cooling water channel. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 羽口本体部の斜視図である。It is a perspective view of the tuyere body part. 高炉用羽口の背面斜視図である。It is a rear perspective view of the tuyere for a blast furnace.

以下、図１～図１１に基づいて本発明の実施例を詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 11.

図１は高炉用羽口の側断面図、図２は高炉用羽口の背面図、図３は冷却水路の説明図、図４、図５は羽口本体部の斜視図であって、符号の１は本発明に係る高炉用羽口、２は羽口本体部、３は内筒部、４は内筒部３の外側に設けられた外筒部、５は内筒部３と外筒部４間に設けられ、一部が内筒部３と外筒部４と外郭カバー１０に接触して内筒部３と外筒部４間に親水路１３と子水路１２を形成する分離壁部、６は冷却水が供給される子給水口、７は冷却水が排出される子排水口、８は冷却水が供給される親給水口、９は冷却水が排出される親排水口、１０は外筒部４の先端に取り付けられ、分離壁部５と一部が接触する外郭カバー、１１は羽口本体部２の先端に取り付けられた先端カバー、１６は貫通穴である。 1 is a side sectional view of the blast furnace tuyere, FIG. 2 is a rear view of the blast furnace tuyere, FIG. 3 is an explanatory view of a cooling water channel, and FIGS. 1 is a blast furnace tuyere according to the present invention, 2 is a tuyere main body, 3 is an inner cylinder, 4 is an outer cylinder provided on the outside of the inner cylinder 3, and 5 is an inner cylinder 3 and an outer cylinder. A separation wall provided between the portions 4 and partially in contact with the inner cylinder portion 3, the outer cylinder portion 4 and the outer shell cover 10 to form a hydrophilic passage 13 and a child water channel 12 between the inner cylinder portion 3 and the outer cylinder portion 4. Part, 6 is a child water supply port to which cooling water is supplied, 7 is a child drainage port to which cooling water is discharged, 8 is a parent water supply port to which cooling water is supplied, and 9 is a parent drainage port to which cooling water is discharged. Reference numeral 10 is an outer shell cover attached to the tip of the outer cylinder portion 4 and partially contacting the separation wall portion 5, 11 is a tip cover attached to the tip of the tuyere main body portion 2, and 16 is a through hole.

符号の１２は水路Ｓ１１、水路Ｓ１２及び水路Ｓ１３で構成された子水路、１３は水路Ｓ１、水路Ｓ２、水路Ｓ３、水路Ｓ４及び水路Ｓ５で構成された親水路である。 Reference numeral 12 is a sub-water channel composed of a water channel S11, a water channel S12 and a water channel S13, and 13 is a hydrophilic channel composed of a water channel S1, a water channel S2, a water channel S3, a water channel S4 and a water channel S5.

子水路１２における冷却水の流れは、羽口本体部２の背面に形成された子給水口６から給水された冷却水が、内筒部３と分離壁部５間に形成され、羽口本体部２の先端側に延びる水路Ｓ１１を通り、先端カバー１１と羽口本体部２間に形成された水路Ｓ１２を周回した後、内筒部３と分離壁部５間に形成された水路Ｓ１３を通り、羽口本体部２の背面に形成された子排水口７から排出される構成となっており、これらを繰り返すことで冷却水を循環させ、主に羽口本体部２の先端と先端カバー１１を冷却するものである。 As for the flow of the cooling water in the child channel 12, the cooling water supplied from the child water supply port 6 formed on the back surface of the tuyere main body 2 is formed between the inner cylinder portion 3 and the separation wall portion 5, and the tuyere main body is formed. After passing through the water channel S11 extending to the tip end side of the portion 2 and circulating the water channel S12 formed between the tip cover 11 and the tuyere main body portion 2, the water channel S13 formed between the inner cylinder portion 3 and the separation wall portion 5 is passed. As it passes, it is configured to be discharged from the child drain port 7 formed on the back surface of the tuyere main body 2, and by repeating these, the cooling water is circulated and mainly the tip of the tuyere main body 2 and the tip cover. It cools 11.

親水路１３における冷却水の流れは、羽口本体部２の背面に形成された親給水口８から給水された冷却水が、外筒部４と分離壁部５間に形成され、羽口本体部の先端側に延びる水路Ｓ１を通り、外郭カバー１０と分離壁部５間に形成された螺旋状の水路Ｓ２及び水路Ｓ３を通った後、水路移行部１５Ａを経由して内筒部３と分離壁部５間に形成された水路Ｓ４を通り、次に内筒部３と分離壁部５間及び外筒部４と分離壁部５間に形成された水路Ｓ５を通り、羽口本体部２の背面に形成された親排水口９から排出される構成となっており、これらを繰り返すことで冷却水を循環させる。 As for the flow of the cooling water in the hydrophilic passage 13, the cooling water supplied from the parent water supply port 8 formed on the back surface of the tuyere main body 2 is formed between the outer cylinder portion 4 and the separation wall portion 5, and the tuyere main body is formed. After passing through the water channel S1 extending to the tip end side of the portion, the spiral water channel S2 and the water channel S3 formed between the outer cover 10 and the separation wall portion 5, and then the inner cylinder portion 3 via the water channel transition portion 15A. It passes through the water channel S4 formed between the separation wall portions 5, then passes through the water channel S5 formed between the inner cylinder portion 3 and the separation wall portion 5 and between the outer cylinder portion 4 and the separation wall portion 5, and the tuyere main body portion. It is configured to be discharged from the parent drain port 9 formed on the back surface of No. 2, and by repeating these, the cooling water is circulated.

親水路１３は主に羽口本体部２の胴体部（内筒部３と外筒部４）を冷却するものであり、親水路１３内を流れる冷却水のみでも高炉用羽口１に対して十分な冷却能力が得られるように設計されている。 The hydrophilic passage 13 mainly cools the body portion (inner cylinder portion 3 and outer cylinder portion 4) of the tuyere main body 2, and only the cooling water flowing in the hydrophilic passage 13 is used for the blast furnace tuyere 1. It is designed to provide sufficient cooling capacity.

本実施例においては、図４、図５に示されるように、水路Ｓ２及び水路Ｓ３で羽口本体部２の先端側に延びる二段の螺旋状の水路（螺旋水路）を構成しているが、この螺旋水路は二段に限定されるものではなく、三段以上の螺旋水路としてもよい。 In this embodiment, as shown in FIGS. 4 and 5, a two-stage spiral water channel (spiral water channel) extending toward the tip end side of the tuyere main body 2 is configured in the water channel S2 and the water channel S3. , This spiral channel is not limited to two stages, and may be a spiral channel having three or more stages.

図６は高炉用羽口１の側断面図、図７は高炉用羽口１の背面図、図８は冷却水路の説明図、図９、図１０は羽口本体部２の斜視図であって、親水路１４以外の各部の名称や機能、子水路１２における冷却水の流れの構成については実施例１と同様である。 6 is a side sectional view of the blast furnace tuyere 1, FIG. 7 is a rear view of the blast furnace tuyere 1, FIG. 8 is an explanatory view of a cooling water channel, and FIGS. 9 and 10 are perspective views of the tuyere main body 2. The names and functions of each part other than the hydrophilic passage 14 and the configuration of the flow of the cooling water in the child water passage 12 are the same as those in the first embodiment.

符号の１４は水路Ｓ６、水路Ｓ７、水路Ｓ８及び水路Ｓ９で構成された親水路である。 Reference numeral 14 is a hydrophilic channel composed of a water channel S6, a water channel S7, a water channel S8, and a water channel S9.

本実施例の親水路１４における冷却水の流れは、羽口本体部２の背面に形成された親給水口８から給水された冷却水が、外筒部４と分離壁部５間に形成され、羽口本体部の先端側に延びる水路Ｓ６を通り、分岐しながら外郭カバー１０と分離壁部５間に形成された平行な２本の水路Ｓ７を通った後、水路移行部１５Ｂを経由して内筒部３と分離壁部５間に形成された平行な２本の水路Ｓ８を通り、次に内筒部３と分離壁部５間及び外筒部４と分離壁部５間に形成された水路Ｓ９を通り、羽口本体部２の背面に形成された親排水口９から排出される構成となっており、これらを繰り返すことで冷却水を循環させる。 In the flow of the cooling water in the hydrophilic passage 14 of this embodiment, the cooling water supplied from the parent water supply port 8 formed on the back surface of the tuyere main body 2 is formed between the outer cylinder portion 4 and the separation wall portion 5. , Passing through the water channel S6 extending to the tip side of the tuyere body portion, passing through two parallel water channels S7 formed between the outer cover 10 and the separation wall portion 5 while branching, and then passing through the water channel transition portion 15B. It passes through two parallel water channels S8 formed between the inner cylinder portion 3 and the separation wall portion 5, and then formed between the inner cylinder portion 3 and the separation wall portion 5 and between the outer cylinder portion 4 and the separation wall portion 5. It is configured to be discharged from the parent drain port 9 formed on the back surface of the tuyere main body 2 through the water channel S9, and the cooling water is circulated by repeating these.

以上のように、本発明に係る高炉用羽口１は、子水路１２と親水路１３、１４の二系統の水路が夫々独立した構成となっているため、子水路１２側において損傷が発生した場合、子水路１２側の冷却水の循環を止め、親水路１３、１４側のみ冷却水を循環させることで高炉用羽口１を冷却し、高炉の操業を継続することができる。 As described above, in the blast furnace tuyere 1 according to the present invention, since the two water channels of the child channel 12 and the water channels 13 and 14 are independent of each other, damage occurs on the child channel 12 side. In this case, the blast furnace tuyere 1 can be cooled and the operation of the blast furnace can be continued by stopping the circulation of the cooling water on the subwater channel 12 side and circulating the cooling water only on the hydrophilic channels 13 and 14 sides.

１ 高炉用羽口
２ 羽口本体部
３ 内筒部
４ 外筒部
５ 分離壁部
６ 子給水口
７ 子排水口
８ 親給水口
９ 親排水口
１０ 外郭カバー
１１ 先端カバー
１２ 子水路
１３ 親水路
１４ 親水路
１５Ａ 水路移行部
１５Ｂ 水路移行部
１６ 貫通穴
Ｓ１～Ｓ９ 水路
Ｓ１１～Ｓ１３ 水路 1 blast furnace tuyere 2 tuyere main body 3 inner cylinder 4 outer cylinder 5 separation wall 6 child water supply port 7 child drainage port 8 parent water supply port 9 parent drainage port 10 outer cover 11 tip cover 12 child channel 13 hydrophilic channel 14 Waterway 15A Waterway transition 15B Waterway transition 16 Through holes S1 to S9 Waterways S11 to S13 Waterways

Claims (2)

羽口本体部及び外郭カバー及び先端カバーから構成される高炉用羽口であって、
前記羽口本体部は、貫通穴を形成する内筒部と、この内筒部の外側に設けられた外筒部と、前記内筒部と外筒部間に設けられ、一部が前記内筒部と外筒部と外郭カバーに接触して前記内筒部と外筒部間に親水路と子水路を形成する分離壁部と、前記羽口本体部の背面に形成された親給水口、親排水口、子給水口及び子排水口と、から成り、
前記外筒部の先端には前記分離壁部と一部が接触するように外郭カバーが取り付けられていること、
前記羽口本体部の先端には先端カバーが取り付けられていること、
前記親水路は、前記外筒部と前記分離壁部間に形成され、前記親給水口から前記羽口本体部の先端側に延びる水路Ｓ１と、前記外郭カバーと前記分離壁部間に形成された螺旋状の水路Ｓ２及び水路Ｓ３と、前記内筒部と前記分離壁部間に形成された水路Ｓ４と、前記水路Ｓ３及び水路Ｓ４間に設けられた水路移行部と、前記外筒部と前記分離壁部間及び前記内筒部と前記分離壁部間に形成され、前記親排水口に繋がる水路Ｓ５と、から成り、
前記子水路は、前記内筒部と前記分離壁部間に形成され、前記子給水口から前記羽口本体部の先端側に延びる水路Ｓ１１と、前記羽口本体部の先端と前記先端カバー間に形成された水路Ｓ１２と、前記内筒部と前記分離壁部間に形成され、前記子排水口に繋がる水路Ｓ１３から成ること、を特徴とする高炉用羽口。 A blast furnace tuyere consisting of a tuyere body, an outer cover, and a tip cover.
The tuyere main body is provided between an inner cylinder portion forming a through hole, an outer cylinder portion provided outside the inner cylinder portion, and the inner cylinder portion and the outer cylinder portion, and a part thereof is inside the inner cylinder portion. A separation wall portion that contacts the cylinder portion, the outer cylinder portion, and the outer cover to form a hydrophilic passage and a child water channel between the inner cylinder portion and the outer cylinder portion, and a parent water supply port formed on the back surface of the tuyere main body portion. , Parent drainage port, child water supply port and child drainage port,
An outer cover is attached to the tip of the outer cylinder portion so that a part of the outer cylinder portion comes into contact with the separation wall portion.
A tip cover is attached to the tip of the tuyere body,
The hydrophilic passage is formed between the outer cylinder portion and the separation wall portion, and is formed between the water channel S1 extending from the parent water supply port to the tip end side of the tuyere main body portion, and between the outer shell cover and the separation wall portion. A spiral water channel S2 and a water channel S3, a water channel S4 formed between the inner cylinder portion and the separation wall portion, a water channel transition portion provided between the water channel S3 and the water channel S4, and the outer cylinder portion. It is composed of a water channel S5 formed between the separation wall portion and between the inner cylinder portion and the separation wall portion and connected to the parent drain port.
The child water channel is formed between the inner cylinder portion and the separation wall portion, and extends from the child water supply port to the tip end side of the tuyere body portion, and between the tip end of the tuyere body portion and the tip cover. A tuyere for a blast furnace, which comprises a water channel S12 formed in the water channel S12 formed in the water channel S12 formed in the water channel S12 formed in the water channel S12 formed in the water channel S12 formed in the water channel S12 formed in the water channel S12 and connected to the child drain port. 前記親水路は、前記外筒部と前記分離壁部間に形成され、前記親給水口から前記羽口本体部の先端側に延びる水路Ｓ６と、前記外郭カバーと前記分離壁部間に形成された平行な２本の水路Ｓ７と、前記内筒部と前記分離壁部間に形成された平行な２本の水路Ｓ８と、
前記水路Ｓ７及び水路Ｓ８間に設けられた水路移行部と、前記外筒部と前記分離壁部間及び前記内筒部と前記分離壁部間に形成され、前記子排水口に繋がる水路Ｓ９と、から成ること、を特徴とする請求項１に記載の高炉用羽口。 The hydrophilic passage is formed between the outer cylinder portion and the separation wall portion, and is formed between the water channel S6 extending from the parent water supply port to the tip end side of the tuyere main body portion, and between the outer shell cover and the separation wall portion. Two parallel water channels S7 and two parallel water channels S8 formed between the inner cylinder portion and the separation wall portion.
A water channel transition portion provided between the water channel S7 and the water channel S8, and a water channel S9 formed between the outer cylinder portion and the separation wall portion and between the inner cylinder portion and the separation wall portion and connected to the child drain port. The tuyere for a blast furnace according to claim 1, wherein the tuyere is composed of.
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518347Y2 (en) * 1976-12-06 1980-04-28
JPS55124445U (en) * 1979-02-24 1980-09-03
US20070235910A1 (en) * 2006-04-11 2007-10-11 Hae-Yang Lee Double chamber single directional spiral tuyere for blast furnaces
JP2012153973A (en) * 2011-01-24 2012-08-16 Seoul Engineering Co Ltd Tuyere for ironmaking furnace
CN109439826A (en) * 2018-12-13 2019-03-08 常州市武进长虹结晶器有限公司 Blast furnace cooling air port

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518347Y2 (en) * 1976-12-06 1980-04-28
JPS55124445U (en) * 1979-02-24 1980-09-03
US20070235910A1 (en) * 2006-04-11 2007-10-11 Hae-Yang Lee Double chamber single directional spiral tuyere for blast furnaces
JP2012153973A (en) * 2011-01-24 2012-08-16 Seoul Engineering Co Ltd Tuyere for ironmaking furnace
CN109439826A (en) * 2018-12-13 2019-03-08 常州市武进长虹结晶器有限公司 Blast furnace cooling air port

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