JP4334119B2

JP4334119B2 - Stave cooler cooling water pipe mounting reinforcement structure

Info

Publication number: JP4334119B2
Application number: JP2000244855A
Authority: JP
Inventors: 裕二平尾; 幸信松本; 隆昭奥田
Original assignee: Nippon Steel Engineering Co Ltd
Current assignee: Nippon Steel Engineering Co Ltd
Priority date: 2000-08-11
Filing date: 2000-08-11
Publication date: 2009-09-30
Anticipated expiration: 2020-08-11
Also published as: JP2002060818A

Description

【０００１】
【発明の属する技術分野】
本発明は、高炉炉壁等の冷却に利用されるステーブクーラーにおける冷却水配管取付け部の補強構造に関するものである。
【０００２】
【従来の技術】
高炉操業において、炉内の高温反応から鉄皮を保護するため、ステーブクーラーを使用し冷却している。従来のステーブクーラーの一例を示すと、図３のように、鉄皮４の内側に金属製のステーブ本体１を配し、ステーブ本体１内に設けられた冷却水路８に冷却水を流して鉄皮４を冷却する。図３はステーブ本体１の下部のみを示しているが、上部は下部とほぼ対称になっていて、冷却水は下部の冷却水配管２から給水口７を経て流入し、上部の排水口を経て冷却水配管から流出する。
【０００３】
冷却水配管２は、図３の例のようにステーブ本体１に溶接されていて、例えば特公昭６３−５６２８３号公報には、鍛造または圧延された銅または銅合金からなるステーブ本体に冷却水配管を溶接した構造が見られる。また特開平１１−２９３３１２号公報には、鋳造された銅または銅合金からなるステーブ本体に冷却水配管を溶接した構造が見られる。
【０００４】
【発明が解決しようとする課題】
従来のステーブクーラーにおいて、冷却水配管２は、図３の例のように、給排水口（図では給水口）７に配管２の端部を差し込み、ステーブ本体１の給排水口外縁部に開先をとってレ形隅肉溶接により接合されており、曲げや引張りに対する溶接強度は必ずしも十分とは言えない。
【０００５】
またステーブ本体１の熱膨張の影響が、鉄皮４と冷却水配管２の接合部を介して、冷却水配管２のステーブ本体１との溶接部に及ばないように、冷却水配管２の外側に伸縮管６を装備していた。
このため、冷却水配管２の長さを、伸縮管６が装備できるように長くしなければならず、冷却水配管２が高炉廻りの保守・点検スペースを圧迫するという問題があった。
【０００６】
そこで本発明が解決しようとする課題は、高炉炉壁等の冷却に使用されるステーブクーラーにおいて、冷却水配管とステーブ本体の接合による取付け部を補強し、伸縮管を省略できて、冷却水配管の長さを短縮できる補強構造を提供することである。
【０００７】
【課題を解決するための手段】
上記課題を解決するための本発明は、冷却水配管がステーブ本体に接合されたステーブクーラーにおいて、冷却水配管をラッパ状の保護管に挿通し、保護管の大径端をステーブ本体に接合し、小径端を冷却水配管の外面に接合すると共に、該冷却水配管をラッパ状のシール部材に挿通し、シール部材の大径端を鉄皮に接合し、小径端を鉄皮の外側にて冷却水配管の外面に接合したことを特徴とするステーブクーラー冷却水配管取付け部の補強構造である。
【０００９】
【発明の実施の形態】
本発明を図２の例により説明する。本例は高炉に取付けたステーブクーラーの断面を示す。鉄皮４の内側に金属製のステーブ本体１を配し、内部の冷却水路８に冷却水を流すことで鉄皮４を冷却する。図はステーブ本体１の下部のみを示しているが、上部は下部とほぼ対称になっていて、冷却水は下部の冷却水配管２から給水口７を経て流入し、上部の排水口を経て冷却水配管から流出する。冷却水配管２は、上記図３の従来例と同様、ステーブ本体１の給排水口（図では給水口）７に配管２の端部を差し込み、溶接により接合されている。なお本発明は溶接のほか、接着、圧着などで接合したものも対象とすることができる。
【００１０】
本発明の構造は、このようなステーブクーラーにおいて、図２の例のように冷却水配管２をラッパ状の保護管３に挿通し、保護管３の大径端をステーブ本体１に接合し、小径端を冷却水配管２の外面に接合したことを特徴とする。本例では溶接により接合しているが、このほか接着、圧着などで接合することもできる。
【００１１】
この構造を形成するには、冷却水配管２を従来例と同様にステーブ本体１に接合した後、その外周にラッパ状の保護管３を、大径端をステーブ本体１側にして被着させ、大径端をステーブ本体１に、小径端を冷却水配管２に、それぞれ接合する。保護管３の大径端はステーブ本体１の給排水口７よりも大きい内径とし、小径端は冷却水配管２の外周に接するか僅かに大きい内径とする。
【００１２】
この本発明において、図２のように、冷却水配管２をラッパ状のシール部材５に挿通し、シール部材５の大径端を鉄皮４に接合し、小径端を鉄皮４の外側にて冷却水配管２の外面に接合した構造が好ましい。この場合も、溶接のほか接着、圧着などで接合することもできる。
【００１３】
この構造を形成するには、保護管３を取付けた冷却水配管２を鉄皮４の開孔に通した後、その外周にラッパ状のシール部材５を、大径端を鉄皮４側にして被着させ、大径端を鉄皮４に、小径端を冷却水配管２に、それぞれ接合する。シール部材５の大径端は鉄皮４の開孔径よりも大きい内径とし、小径端は冷却水配管２の外周に接するか僅かに大きい内径とする。
【００１４】
また図１の参考例では、保護管３を鉄皮４の開孔を通して貫通させ、鉄皮４の外側にて保護管３の小径端を冷却水配管２の外面に接合するとともに、鉄皮４の外側の保護管３をラッパ状のシール部材５に挿通し、シール部材５の大径端を鉄皮４に接合し、シール部材５の小径端を保護管３の外面に接合した構造としている。この場合の接合も、溶接のほか接着、圧着などを採用することができる。
【００１５】
この構造を形成するには、冷却水配管２を従来例と同様にステーブ本体１に接合した後、まずその外周に長尺のラッパ状の保護管３を、大径端をステーブ本体側にして被着させ、大径端をステーブ本体１に接合する。保護管３の大径端はステーブ本体１の給排水口７よりも大きい内径とし、小径端は冷却水配管２の外周に接するかやや大きい内径で、かつ鉄皮４の開孔径よりも小さい外径とし、小径端が鉄皮４の外側に貫通する長さとする。
【００１６】
その後、保護管３を取付けた冷却水配管２を鉄皮４の開孔に通す。このとき保護管３も開孔を通し小径端を鉄皮４の外側にて冷却水配管２の外面に接合する。そして鉄皮４の外側に出た保護管３の外周に、ラッパ状のシール部材５を、大径端を鉄皮４側にして被着させ、大径端を鉄皮４に、小径端を保護管３に、それぞれ接合する。シール部材５の大径端は鉄皮４の孔径よりも大きい内径とし、小径端は保護管３の小径端外周に接するか僅かに大きい内径とする。
【００１７】
【発明の効果】
以上に説明した本発明のステーブクーラー冷却水配管取付け部の補強構造により、つぎのような優れた効果が発揮される。
（１）保護管３を取付けることで、冷却水配管２とステーブ本体１の接合強度が大幅に向上でき、ステーブクーラーの一炉代に渡る信頼性向上に寄与する。
（２）ラッパ状のシール部材５を取付けることで、ステーブ本体の熱膨張による冷却水配管２の変位に対しシール部材５が容易に追従し、冷却水配管２や保護管３の局部応力発生を抑えることができる。
（３）保護管３およびシール部材５を取付けることで、従来のような伸縮管６が不要となり、冷却水配管２の長さを短縮できる。
（４）冷却水配管２を鉄皮４の近傍で接続できることから、高炉廻りの保守・点検スペースを確保することができる。
【図面の簡単な説明】
【図１】参考例を示す断面図である。
【図２】本発明構造の別の例を示す断面図である。
【図３】従来構造の例を示す断面図である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reinforcing structure for a cooling water pipe mounting portion in a stave cooler used for cooling a blast furnace wall or the like.
[0002]
[Prior art]
In blast furnace operation, a stave cooler is used to cool the iron shell from high temperature reactions in the furnace. An example of a conventional stave cooler is as shown in FIG. 3, in which a metallic stave body 1 is arranged inside the iron skin 4 and the cooling water is supplied to a cooling water passage 8 provided in the stave body 1 to cause iron. The skin 4 is cooled. FIG. 3 shows only the lower part of the stave body 1, but the upper part is almost symmetrical with the lower part, and the cooling water flows from the lower cooling water pipe 2 through the water supply port 7 and passes through the upper drainage port. Out of the cooling water piping.
[0003]
The cooling water pipe 2 is welded to the stave body 1 as in the example of FIG. 3, for example, Japanese Patent Publication No. 63-56283 discloses a cooling water pipe connected to a stave body made of forged or rolled copper or copper alloy. A welded structure can be seen. Japanese Patent Application Laid-Open No. 11-293312 shows a structure in which a cooling water pipe is welded to a stave body made of cast copper or a copper alloy.
[0004]
[Problems to be solved by the invention]
In the conventional stave cooler, as shown in the example of FIG. 3, the cooling water pipe 2 has an end of the pipe 2 inserted into the water supply / drain port (water supply port in the figure) 7 and a groove at the outer edge of the water supply / drain port of the stave body 1. Therefore, it is joined by re-shaped fillet welding, and the welding strength against bending and tension is not always sufficient.
[0005]
Further, the outside of the cooling water pipe 2 is not affected by the thermal expansion of the stave body 1 via the joint between the iron shell 4 and the cooling water pipe 2 and the welded portion of the cooling water pipe 2 to the stave body 1. Was equipped with a telescopic tube 6.
For this reason, the length of the cooling water pipe 2 has to be long so that the expansion and contraction pipe 6 can be equipped, and there has been a problem that the cooling water pipe 2 presses the maintenance / inspection space around the blast furnace.
[0006]
Therefore, the problem to be solved by the present invention is to provide a stave cooler used for cooling a blast furnace wall or the like, reinforcing the attachment portion by joining the cooling water pipe and the stave body, omitting the expansion and contraction pipe, It is providing the reinforcement structure which can shorten the length of.
[0007]
[Means for Solving the Problems]
The present invention for solving the above-mentioned problems is a stave cooler in which a cooling water pipe is joined to a stave body, the cooling water pipe is inserted into a trumpet-shaped protective pipe, and the large-diameter end of the protective pipe is joined to the stave body. The small diameter end is joined to the outer surface of the cooling water pipe, the cooling water pipe is inserted into a trumpet-shaped sealing member, the large diameter end of the sealing member is joined to the iron skin, and the small diameter end is outside the iron skin. It is the reinforcement structure of the stave cooler cooling water piping attachment part characterized by having joined to the outer surface of the cooling water piping.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described with reference to the example of FIG. This example shows a cross section of a stave cooler attached to a blast furnace. The metal stave body 1 is disposed inside the iron skin 4 and the iron skin 4 is cooled by flowing cooling water through an internal cooling water channel 8. Although the figure shows only the lower part of the stave body 1, the upper part is almost symmetrical with the lower part, and cooling water flows from the lower cooling water pipe 2 through the water supply port 7 and cools through the upper drainage port. Out of water piping. The cooling water pipe 2 is joined by welding by inserting the end of the pipe 2 into a water supply / drain port (water supply port in the figure) 7 of the stave body 1 as in the conventional example of FIG. In addition to welding, the present invention can also be applied to those bonded by adhesion, pressure bonding, or the like.
[0010]
In the structure of the present invention, in such a stave cooler, the cooling water pipe 2 is inserted into the trumpet-shaped protective tube 3 as in the example of FIG. 2, and the large-diameter end of the protective tube 3 is joined to the stave body 1. The small diameter end is joined to the outer surface of the cooling water pipe 2. In this example, they are joined by welding, but they can also be joined by adhesion or pressure bonding.
[0011]
In order to form this structure, the cooling water pipe 2 is joined to the stave body 1 in the same manner as in the conventional example, and then a trumpet-shaped protective tube 3 is attached to the outer periphery of the cooling water pipe 2 with the large diameter end facing the stave body 1 side. The large diameter end is joined to the stave body 1 and the small diameter end is joined to the cooling water pipe 2. The large-diameter end of the protective tube 3 has an inner diameter larger than that of the water supply / drain port 7 of the stave body 1, and the small-diameter end has an inner diameter that is in contact with or slightly larger than the outer periphery of the cooling water pipe 2.
[0012]
In the present invention, as shown in FIG. 2, the cooling water pipe 2 is inserted into a trumpet-shaped seal member 5, the large-diameter end of the seal member 5 is joined to the iron skin 4, and the small-diameter end is outside the iron skin 4. Therefore, a structure joined to the outer surface of the cooling water pipe 2 is preferable. In this case as well, welding can be performed by bonding, pressure bonding, or the like.
[0013]
In order to form this structure, the cooling water pipe 2 to which the protective tube 3 is attached is passed through the opening of the iron skin 4, and then a trumpet-like seal member 5 is provided on the outer periphery thereof, with the large diameter end facing the iron skin 4 side. The large diameter end is joined to the iron skin 4 and the small diameter end is joined to the cooling water pipe 2. The large-diameter end of the seal member 5 has an inner diameter larger than the opening diameter of the iron shell 4, and the small-diameter end is in contact with the outer periphery of the cooling water pipe 2 or has a slightly larger inner diameter.
[0014]
In the reference example of FIG. 1 , the protective tube 3 is penetrated through the opening of the iron skin 4, and the small diameter end of the protective tube 3 is joined to the outer surface of the cooling water pipe 2 outside the iron skin 4. The outer protective tube 3 is inserted into a trumpet-shaped seal member 5, the large-diameter end of the seal member 5 is joined to the iron skin 4, and the small-diameter end of the seal member 5 is joined to the outer surface of the protective tube 3 . . In this case, bonding, pressure bonding, or the like can be employed in addition to welding.
[0015]
In order to form this structure, the cooling water pipe 2 is joined to the stave body 1 in the same manner as in the conventional example, and then a long trumpet-shaped protective tube 3 is provided on the outer periphery, and the large diameter end is set to the stave body side. The large-diameter end is bonded to the stave body 1. The large-diameter end of the protective tube 3 has an inner diameter larger than the water supply / drain port 7 of the stave body 1, and the small-diameter end has a slightly larger inner diameter that is in contact with the outer periphery of the cooling water pipe 2 and smaller than the opening diameter of the iron skin 4 And the length that the small diameter end penetrates to the outside of the iron skin 4.
[0016]
Thereafter, the cooling water pipe 2 to which the protective pipe 3 is attached is passed through the opening of the iron skin 4. At this time, the protective tube 3 is also connected to the outer surface of the cooling water pipe 2 outside the iron skin 4 through the opening. Then, a trumpet-shaped sealing member 5 is attached to the outer periphery of the protective tube 3 protruding outside the iron skin 4 with the large diameter end facing the iron skin 4, the large diameter end is attached to the iron skin 4, and the small diameter end is attached. Each is joined to the protective tube 3. The large-diameter end of the seal member 5 has an inner diameter larger than the hole diameter of the iron shell 4, and the small-diameter end is in contact with the outer periphery of the small-diameter end of the protective tube 3 or has a slightly larger inner diameter.
[0017]
【The invention's effect】
The following excellent effects are exhibited by the reinforcement structure of the stave cooler cooling water pipe mounting portion of the present invention described above.
(1) By attaching the protective pipe 3, the joining strength between the cooling water pipe 2 and the stave body 1 can be greatly improved, which contributes to the improvement of reliability over one furnace cost of the stave cooler.
(2) By attaching the trumpet-shaped seal member 5, the seal member 5 easily follows the displacement of the cooling water pipe 2 due to the thermal expansion of the stave body, and local stress is generated in the cooling water pipe 2 and the protective pipe 3. Can be suppressed.
(3) By attaching the protective tube 3 and the seal member 5, the conventional telescopic tube 6 becomes unnecessary, and the length of the cooling water pipe 2 can be shortened.
(4) Since the cooling water pipe 2 can be connected in the vicinity of the iron shell 4, a maintenance / inspection space around the blast furnace can be secured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a reference example .
FIG. 2 is a cross-sectional view showing another example of the structure of the present invention.
FIG. 3 is a cross-sectional view showing an example of a conventional structure.

Claims

In a stave cooler where the cooling water pipe is joined to the stave body, the cooling water pipe is inserted into a trumpet-shaped protective tube, the large diameter end of the protective tube is joined to the stave body, and the small diameter end is joined to the outer surface of the cooling water pipe In addition, the cooling water pipe is inserted into a trumpet-shaped sealing member, the large diameter end of the sealing member is joined to the iron skin, and the small diameter end is joined to the outer surface of the cooling water pipe outside the iron skin. Stave cooler cooling water pipe mounting structure.