JPS6214121Y2 - - Google Patents
Info
- Publication number
- JPS6214121Y2 JPS6214121Y2 JP2673681U JP2673681U JPS6214121Y2 JP S6214121 Y2 JPS6214121 Y2 JP S6214121Y2 JP 2673681 U JP2673681 U JP 2673681U JP 2673681 U JP2673681 U JP 2673681U JP S6214121 Y2 JPS6214121 Y2 JP S6214121Y2
- Authority
- JP
- Japan
- Prior art keywords
- slit
- chamber
- sealing
- furnace
- metal
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 19
- 239000011261 inert gas Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000003779 heat-resistant material Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 101700004678 SLIT3 Proteins 0.000 description 7
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000007779 soft material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Furnace Details (AREA)
Description
【考案の詳細な説明】
この考案は、雰囲気ガスを使用する帯状金属の
連続熱処理炉の入口装置に関するものである。[Detailed Description of the Invention] This invention relates to an inlet device for a continuous heat treatment furnace for strip metal using atmospheric gas.
帯状金属の熱処理炉として雰囲気ガスを使用す
る炉があることは周知のとおりであり、この種の
炉では第１図に一例を略示縦断面図で示すよう、
帯状金属１を炉内２に取入れるスリツト３を炉体
底部４に設けてある。 It is well known that there are furnaces that use atmospheric gas as heat treatment furnaces for metal strips, and in this type of furnace, as shown in FIG.
A slit 3 for introducing the strip metal 1 into the furnace 2 is provided at the bottom 4 of the furnace body.
スリツト３の幅ａはできるだけ小寸にしてある
が、それでも炉内２の雰囲気ガスが漏れるので、
図示のように、スリツト３を囲むシール室Ａを設
け、このシール室Ａの底部に、帯状金属１の取入
口５を設ける一方、この取入口５に一対のシール
ロール６，６を設けてある。 Although the width a of the slit 3 is made as small as possible, the atmospheric gas in the furnace 2 still leaks.
As shown in the figure, a seal chamber A surrounding the slit 3 is provided, and an intake port 5 for the strip metal 1 is provided at the bottom of the seal chamber A, and a pair of seal rolls 6, 6 are provided in the intake port 5. .
シールロール６，６は、帯状金属１の走行方向
（図中に矢印ｄで示す）に従つた方向に回転し、
ロール間の間隙ｂをできるだけ狭く、通常３mm程
度としてある。 The seal rolls 6, 6 rotate in a direction that follows the running direction of the metal strip 1 (indicated by arrow d in the figure),
The gap b between the rolls is made as narrow as possible, usually about 3 mm.
一方、前記シールロール６，６間に向けて不活
性ガス（通常窒素）を吹付け、スリツト３からシ
ール室Ａに洩出した雰囲気ガスが炉外に流出する
のを防ぐようにしている。 On the other hand, an inert gas (usually nitrogen) is blown between the seal rolls 6, 6 to prevent the atmospheric gas leaking from the slit 3 into the sealing chamber A from flowing out of the furnace.
前記間隙ｂを狭くするほど外部へのガス洩れも
少なくなるが、帯状金属１は走行中表面と直角の
方向、即ち、図中左右方向にあおるような振動
（通称ばたつき）を伴うので、あまり狭くすると
帯状金属の表面を傷付けてしまうため、狭くする
にも限界があり、前記３mmの数値はほぼ極限であ
る。 The narrower the gap b is, the less gas leaks to the outside, but since the metal strip 1 is accompanied by vibrations (commonly known as flapping) in the direction perpendicular to the surface while running, that is, in the left-right direction in the figure, it should not be too narrow. This will damage the surface of the metal strip, so there is a limit to how narrow it can be, and the value of 3 mm is almost the limit.
なお、シールロール６，６を帯状金属１の表面
を傷付けない軟質の素材とすればよいが、雰囲気
ガスの高熱にさらされるため、鋼ロールなどとせ
ざるを得ない。 Note that the seal rolls 6, 6 may be made of a soft material that does not damage the surface of the metal strip 1, but since they are exposed to the high heat of the atmospheric gas, they must be made of steel rolls or the like.
前記３mm程度の隙間としても実働時の不活性ガ
スの吹付け量は１口につき500〜800Nm3／Ｈに達
し非常に不経済であるため、不活性ガス吹付け量
をできるだけ少なくでき、雰囲気ガス洩出のおそ
れもない連続熱処理炉の入口装置の開発が強く望
まれてきた。 Even with a gap of about 3 mm, the amount of inert gas sprayed during actual operation reaches 500 to 800 Nm 3 /H per port, which is extremely uneconomical. There has been a strong desire to develop an inlet device for continuous heat treatment furnaces that is free from leakage.
この考案は、上述の要望に応える有効適切な連
続熱処理炉の入口装置を提供するもので、底部に
スリツトを有し、帯状金属を前記スリツトから連
続的に取入れる連続熱処理炉の入口装置におい
て、スリツトを囲む主シール室の外側に副シール
室を設け、主シール室内に炉内圧とほぼ同じ圧力
の不活性ガスを吹込自在としたガス吹込管を設け
る一方、両シール室に亘り、帯状金属の通過を自
在とした小間隙通路をもつ耐熱性材製ラビリンス
シールを設け、さらに副シール室への帯状金属取
入口に、外周面を緩衝層に形成した一対のシーリ
ングロールを設けた点に特徴がある。 This invention provides an effective and suitable inlet device for a continuous heat treatment furnace that meets the above-mentioned needs. A sub-seal chamber is provided outside the main seal chamber that surrounds the slit, and a gas blowing pipe that can freely blow inert gas at approximately the same pressure as the furnace internal pressure is installed in the main seal chamber. It is characterized by the provision of a labyrinth seal made of heat-resistant material with a small gap passage that allows free passage, and a pair of sealing rolls whose outer peripheral surfaces are formed into a buffer layer at the strip-shaped metal intake to the sub-seal chamber. be.
ついで、この考案の装置を実施例により図面を
参照しながら説明する。 Next, the apparatus of this invention will be explained by way of examples with reference to the drawings.
第２図にはこの考案の装置の実施例を略示縦断
面図で示してある。図面に示すよう、この考案の
装置は、帯状金属１が炉内２に入るためのスリツ
ト３を設けた炉体底部４の外側に、スリツトを囲
む主シール室Ｂと、主シール室の外側に隔壁７を
介して隣在する副シール室Ｃとを有し、主シール
室Ｂには所要数の不活性ガス吹込管８を開口させ
てある。 FIG. 2 shows a schematic longitudinal sectional view of an embodiment of the device of this invention. As shown in the drawing, the device of this invention has a main seal chamber B surrounding the slit, a main seal chamber B surrounding the slit, and a main seal chamber B outside the main seal chamber. It has a sub-seal chamber C adjacent to it via a partition wall 7, and a required number of inert gas blowing pipes 8 are opened in the main seal chamber B.
不活性ガスはこの実施例では窒素とし、この不
活性ガス吹込みにより主シール室Ｂ内の圧力を、
炉内２における圧力とほぼ等しく、外気に対して
６〜10mmH2O程度高い圧力に保ち、また副シール
室Ｃ内の圧力は外気に対して３mmH2O程度高く保
つてある。 In this example, the inert gas is nitrogen, and by blowing in the inert gas, the pressure inside the main seal chamber B is
The pressure in the sub-sealing chamber C is kept approximately equal to the pressure in the furnace 2, which is about 6 to 10 mmH2O higher than the outside air, and the pressure in the sub-sealing chamber C is kept about 3mmH2O higher than the outside air.
一方、主シール室Ｂと副シール室Ｃに亘つては
隔壁７を貫通させてラビリンスシール９を設けて
ある。 On the other hand, between the main seal chamber B and the sub-seal chamber C, a labyrinth seal 9 is provided to penetrate the partition wall 7.
ラビリンスシール９は、外郭体９Ａの内側にお
いて帯状金属１の表裏面に臨む位置に、多数の鋼
板製邪魔板９Ｂを設け、両側の邪魔板９Ｂ，９Ｂ
の先端間を帯状金属１が僅かの間隙を保つて通過
できる小間隙通路９Ｃに形成してある。 The labyrinth seal 9 is provided with a large number of steel baffle plates 9B at positions facing the front and back surfaces of the band-shaped metal 1 inside the outer body 9A, and baffle plates 9B, 9B on both sides.
A small gap passage 9C is formed through which the band-shaped metal 1 can pass between the tips of the metal strips 1 with a small gap maintained.
さらに、副シール室Ｃの底部１０には帯状金属
取入口１１を設けてあり、この帯状金属取入口１
１には一対のシーリングロール１２，１２を設け
てある。 Furthermore, a band-shaped metal intake port 11 is provided at the bottom 10 of the sub-sealing chamber C, and this band-shaped metal intake port 1
1 is provided with a pair of sealing rolls 12, 12.
シーリングロール１２，１２は、外周面を合成
ゴム等の軟質材で厚くライニングするか、あるい
は合成樹脂製の人造毛を植毛してブラシ状とした
緩衝層１２Ａに形成したロールとし、帯状金属１
の表裏面を挾んだ状態での回転と、帯状金属１の
前記ばたつき動に追従した揺動とを自在としてあ
る。 The sealing rolls 12, 12 are rolls whose outer peripheral surfaces are thickly lined with a soft material such as synthetic rubber, or are formed into a brush-like buffer layer 12A by flocking artificial hair made of synthetic resin.
It is possible to freely rotate while holding the front and back surfaces of the belt-shaped metal 1 between them, and to swing following the fluttering movement of the metal band 1.
上述の構成からなるこの考案の装置は、帯状金
属１がシーリングロール１２，１２に挾まれた状
態で帯状金属取入口１１を通過したのち、副シー
ル室Ｃに入り、続いて、ラビリンスシール９の小
間隙通路９Ｃを経て主シール室Ｂに入る。 In the device of this invention having the above-mentioned configuration, the metal band 1 passes through the metal band intake 11 while being sandwiched between the sealing rolls 12, 12, enters the sub-seal chamber C, and then enters the labyrinth seal 9. It enters the main seal chamber B via the small gap passage 9C.
主シール室Ｂに入つた帯状金属１は不活性ガス
吹込管８，８の口端間を経てスリツト３に至り、
このスリツト３から炉内２に入つて熱処理され
る。 The metal strip 1 that has entered the main sealing chamber B passes between the mouth ends of the inert gas blowing pipes 8, 8, and reaches the slit 3.
The material enters the furnace 2 through the slit 3 and is heat-treated.
一方、炉内２の雰囲気ガスは、主シール室Ｂ内
の不活性ガスの圧力が、ほぼ等圧であるため、ス
リツト３からほとんど主シール室Ｂに流れない。 On the other hand, the atmospheric gas in the furnace 2 hardly flows into the main sealing chamber B from the slit 3 because the pressure of the inert gas in the main sealing chamber B is approximately equal.
また、主シール室Ｂ内の不活性ガスは、ラビリ
ンスシール９の効果により、ほとんど副シール室
Ｃに流れない。 Moreover, the inert gas in the main seal chamber B hardly flows into the sub seal chamber C due to the effect of the labyrinth seal 9.
さらに、副シール室Ｃ内は、帯状金属取入口１
１があるのに拘らず、ここに取付けてあるシーリ
ングロール１２，１２が帯状金属１を挾んでいる
ので、外気との流通がほとんどない。 Furthermore, inside the sub-seal chamber C, a strip metal intake port 1 is provided.
1, the sealing rolls 12, 12 attached here sandwich the metal strip 1, so there is almost no circulation with the outside air.
シーリングロール１２，１２は表面を緩衝層１
２Ａで形成してあるので、帯状金属１を傷付ける
こともないし、ラビリンスシール９の存在によつ
て高温のガスにさらされることもないので、損傷
することもない。 The sealing rolls 12, 12 have a buffer layer 1 on the surface.
Since it is made of 2A, the metal band 1 will not be damaged, and the presence of the labyrinth seal 9 will not cause it to be exposed to high temperature gas, so it will not be damaged.
実用試験の結果、この考案の装置を具備した連
続熱処理炉での不活性ガス消費節減量は、広幅帯
鋼の場合で、取入口１箇所につき400〜700Nm3／
Ｈであり、年間を通じては3000000〜5500000Nm3
にも達し、その経済性は抜群であつた。 As a result of practical tests, the reduction in inert gas consumption in a continuous heat treatment furnace equipped with the device of this invention is 400 to 700 Nm 3 per intake point for wide strip steel.
H, 3,000,000 to 5,500,000Nm 3 throughout the year
, and its economic efficiency was outstanding.
以上の説明から明らかなように、この考案の装
置は、炉内の雰囲気ガスの洩出をほぼ確実に阻止
できる上に、雰囲気ガス洩出阻止に使用する不活
性ガスの消費量を従来に較べ尨大な量、節減でき
て、熱処理コストの大幅な低減を可能にする優れ
た利点を有するものである。 As is clear from the above explanation, the device of this invention can almost certainly prevent the leakage of atmospheric gas inside the furnace, and the amount of inert gas used to prevent atmospheric gas leakage is lower than that of conventional devices. It has the excellent advantage of being able to save a huge amount and making it possible to significantly reduce the cost of heat treatment.
第１図は従来の装置の一例を示す略示縦断面
図、第２図はこの考案の装置の実施例を示す略示
縦断面図である。図面において、
１……帯状金属、２……炉内、３……スリツ
ト、４……炉体底部、７……隔壁、８……不活性
ガス吹込管、９……ラビリンスシール、９Ａ……
外郭体、９Ｂ……邪魔板、９Ｃ……小間隙通路、
１０……底部、１１……帯状金属取入口、１２…
…シーリングロール、１２Ａ……緩衝層、Ｂ……
主シール室、Ｃ……副シール室。
FIG. 1 is a schematic vertical sectional view showing an example of a conventional device, and FIG. 2 is a schematic vertical sectional view showing an embodiment of the device of this invention. In the drawings, 1...Metal band, 2...Furnace interior, 3...Slit, 4...Furnace bottom, 7...Partition wall, 8...Inert gas blowing pipe, 9...Labyrinth seal, 9A...
Outer body, 9B...Baffle plate, 9C...Small gap passage,
10...bottom, 11...band metal intake, 12...
...Sealing roll, 12A...Buffer layer, B...
Main seal chamber, C...sub-seal chamber.
Claims (1)
トから連続的に取入れる連続熱処理炉の入口装置
において、 前記スリツトを囲む主シール室の外側に副シー
ル室を設け、前記主シール室内に、炉内圧とほぼ
同じ圧力の不活性ガスを吹込自在としたガス吹込
管を設ける一方、両シール室に亘り、帯状金属の
通過を自在とした小間隙通路をもつ耐熱性材製ラ
ビリンスシールを設け、さらに、前記副シール室
への帯状金属取入口に、外周面を緩衝層に形成し
た一対のシーリングロールを設けてなることを特
徴とする連続熱処理炉の入口装置。[Claims for Utility Model Registration] In an inlet device for a continuous heat treatment furnace that has a slit at the bottom and continuously takes in strip metal from the slit, an auxiliary sealing chamber is provided outside the main sealing chamber surrounding the slit, A gas blowing pipe capable of freely blowing an inert gas at approximately the same pressure as the furnace internal pressure is provided in the main sealing chamber, while a heat-resistant material having a small gap passageway that allows the band-shaped metal to freely pass through both sealing chambers. 1. An inlet device for a continuous heat treatment furnace, characterized in that a labyrinth seal made of aluminum is provided, and a pair of sealing rolls whose outer peripheral surfaces are formed with a buffer layer are provided at the strip metal intake port to the sub-seal chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2673681U JPS6214121Y2 (en) | 1981-02-28 | 1981-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2673681U JPS6214121Y2 (en) | 1981-02-28 | 1981-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57143258U JPS57143258U (en) | 1982-09-08 |
| JPS6214121Y2 true JPS6214121Y2 (en) | 1987-04-10 |
Family
ID=29824457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2673681U Expired JPS6214121Y2 (en) | 1981-02-28 | 1981-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214121Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2865418B1 (en) * | 2004-01-28 | 2006-03-03 | Air Liquide | ULTRAVIOLET CROSS-LINKING EQUIPMENT WITH CONTROLLED ATMOSPHERE |
-
1981
- 1981-02-28 JP JP2673681U patent/JPS6214121Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57143258U (en) | 1982-09-08 |
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