JPS6114142A - Electrode structural body for melting glass - Google Patents
Electrode structural body for melting glassInfo
- Publication number
- JPS6114142A JPS6114142A JP13230784A JP13230784A JPS6114142A JP S6114142 A JPS6114142 A JP S6114142A JP 13230784 A JP13230784 A JP 13230784A JP 13230784 A JP13230784 A JP 13230784A JP S6114142 A JPS6114142 A JP S6114142A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- holder
- cooling medium
- tube
- space part
- 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
Landscapes
- Resistance Heating (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明はガラス溶融に用いる電極構造体に関する。[Detailed description of the invention] [Technical field of invention] The present invention relates to an electrode structure used for glass melting.
一般にガラスを溶融するために、電極によりガラスに通
電してジュール熱により溶融を行なう方法が広く行なわ
れており、この方法にはモリブデン電極が使用されてい
る。モリブデンは高温強度に優れガラスに悪影響を与え
ないので電極材料として適しているが、反面大気中にお
ける高温下では著しく醗化し消耗する欠点がある。Generally, in order to melt glass, a method is widely used in which the glass is energized through an electrode and melted using Joule heat, and a molybdenum electrode is used in this method. Molybdenum has excellent high-temperature strength and does not adversely affect glass, so it is suitable as an electrode material. However, on the other hand, it has the disadvantage that it significantly melts and wears out at high temperatures in the atmosphere.
しかして、電極を溶融炉に設ける場合には、溶融炉の側
部や底部の炉壁に電極ホルダを設置し、この電極ホルダ
に電極を挿入して先端を炉内に挿入しており、電極の炉
内に挿入した部分はガラスに接し直接空気に触れないの
で酸化される危険性が少ない。しかし、電−〇炉外に出
ている部分は、空気中にさらされ且つ高温に加熱されて
いるために著しく酸化する。このため炉外に出ているモ
リブデン電極の部分は、冷却を行なって酸化される温度
以下に保つ必要がある。However, when installing an electrode in a melting furnace, an electrode holder is installed on the side or bottom wall of the melting furnace, the electrode is inserted into this electrode holder, and the tip is inserted into the furnace. The part inserted into the furnace is in contact with the glass and does not come into direct contact with air, so there is little risk of oxidation. However, the portions exposed to the outside of the electric furnace are exposed to air and heated to high temperatures, so they are significantly oxidized. Therefore, the portion of the molybdenum electrode exposed outside the furnace must be cooled to keep it below the oxidation temperature.
従来、モリブデン電極を冷却するためには、電極ホルダ
の内部に水を入れ、この水を電極表面に直接掛けて冷却
を行なう所謂直接水冷方式が採用されている。しかしな
がら、この直接水冷方式ではモリブデン電極が直接水に
触れるために酸化の原因となる問題があり、特に水が電
極の一部に局部的に掛かると、電極が局部的に酸化消耗
して欠損する問題がある。Conventionally, in order to cool molybdenum electrodes, a so-called direct water cooling method has been adopted in which water is poured into an electrode holder and the water is directly applied to the electrode surface for cooling. However, with this direct water cooling method, there is a problem that the molybdenum electrode comes into direct contact with water, causing oxidation. In particular, if water splashes locally on a part of the electrode, the electrode will be locally oxidized and worn out, causing damage. There's a problem.
本発明は前記事情になされたもので、電極を酸化を伴う
ことなく良好に冷却を行なえるガラス溶融用電極構造体
を提供するものである。The present invention has been made in view of the above circumstances, and provides an electrode structure for glass melting that can cool the electrode well without oxidizing the electrode.
本発明の電極構造体は、電極と、この電極を冷却する冷
却媒体を流す空間部を電極と隔ててその囲りに設けた電
極ホルダとを具備することを特徴とするものである。す
なわち、モリブデン電極を冷却媒体により間接冷却する
ものである。The electrode structure of the present invention is characterized by comprising an electrode and an electrode holder that surrounds the electrode and is separated from the electrode by a space through which a cooling medium for cooling the electrode flows. That is, the molybdenum electrode is indirectly cooled by a cooling medium.
以下本発明を図面で示す一実施例について説明する。 An embodiment of the present invention illustrated in the drawings will be described below.
図面は本発明の電極構造体の一実施例を示す縦断面図で
ある。図中１はガラス溶融炉の炉壁１３に装着した電極
ホルダ、２はこの電極ホルダ１に挿通した電極である。The drawing is a longitudinal sectional view showing one embodiment of the electrode structure of the present invention. In the figure, 1 is an electrode holder attached to a furnace wall 13 of a glass melting furnace, and 2 is an electrode inserted into this electrode holder 1.
電極ホルダ１の構成は次の通りである。３は炉壁１３の
外部に配置したホルダ外管、４はホルダ外管３の内側に
配置したホルダ内管で、この外管３と内管４との間には
管状をなす空間部５が形成される。ホルダ外管３の一端
は、炉壁１３に形成した孔１４に嵌着される。また、ホ
ルダ外管３の一端、には冷却媒体の導入管６が接続して
あり、他端 へには冷却媒体の導出管７が接続し
である。導入管６は冷却媒体供給用のポンプに接続され
る。The structure of the electrode holder 1 is as follows. 3 is a holder outer tube placed outside the furnace wall 13, 4 is a holder inner tube placed inside the holder outer tube 3, and a tubular space 5 is provided between the outer tube 3 and the inner tube 4. It is formed. One end of the holder outer tube 3 is fitted into a hole 14 formed in the furnace wall 13. Further, a cooling medium inlet pipe 6 is connected to one end of the holder outer tube 3, and a cooling medium outlet pipe 7 is connected to the other end. The introduction pipe 6 is connected to a pump for supplying a cooling medium.
ホルダの端部には、ホルダ内管４の内側で開口する連通
孔８が形成してあり、連通孔８には真空引き管９が接続
しである。真空引き管９は真空ポンプに接続される。A communication hole 8 that opens inside the holder inner tube 4 is formed at the end of the holder, and an evacuated tube 9 is connected to the communication hole 8. The evacuation tube 9 is connected to a vacuum pump.
電極２はモリブデンで形成した棒状をなすものである。The electrode 2 is made of molybdenum and has a rod shape.
電極２は電極ホルダ１のホルダ内管４に挿通され、一端
部が炉壁１３の内側に挿入されている。これにより電極
２の炉壁１３外側に位置する部分は電極ホルダ１の内部
に位置することになる。電極２における電極ホルダ１の
内部に位置する部分の表面は、例えば見目ローレット加
工によって粗面２ａに形成されている。The electrode 2 is inserted into the holder inner tube 4 of the electrode holder 1, and one end thereof is inserted inside the furnace wall 13. As a result, the portion of the electrode 2 located outside the furnace wall 13 is located inside the electrode holder 1. The surface of the portion of the electrode 2 located inside the electrode holder 1 is formed into a rough surface 2a by, for example, visible knurling.
この粗面２ａの表面粗さは０．１〜２ｍ程度である。ま
た、電極２０基端にはボルト１０およびナツト１１によ
り端子１２が取付けられており、この端子１２は電源に
接続されている。The surface roughness of this rough surface 2a is about 0.1 to 2 m. Further, a terminal 12 is attached to the base end of the electrode 20 with a bolt 10 and a nut 11, and this terminal 12 is connected to a power source.
このように構成した電極構造体において、電源より端子
１２を介して電極２に通電し、溶融炉に入れたガラスを
溶融すると、電極２は溶融したガラスにより高温に加熱
される。そ゛して、冷却媒体をポンプの運転により導入
管６を通して電極ホルダ１におけるホルダ外管３とホル
ダ内管４との間の空間部５に導入する。ホルダ外管３と
ホルダ内管４の間の空間部５が電極２の周囲を囲む管状
の空間部として形成されているので、冷却媒体は空間部
５内に流入して流れる過程で、電極２の外周側からホル
ダ内管４を介して電極２の熱を奪い冷却を行なう。空間
部５を流れた冷却媒体は導出管７を通って導出される。In the electrode structure configured as described above, when the electrode 2 is energized from the power source via the terminal 12 and the glass put in the melting furnace is melted, the electrode 2 is heated to a high temperature by the molten glass. Then, the cooling medium is introduced into the space 5 between the holder outer tube 3 and the holder inner tube 4 in the electrode holder 1 through the introduction tube 6 by operating the pump. Since the space 5 between the holder outer tube 3 and the holder inner tube 4 is formed as a tubular space surrounding the electrode 2, the cooling medium flows into the space 5 and flows through the electrode 2. The electrode 2 is cooled by removing heat from the outer circumferential side of the electrode 2 via the holder inner tube 4. The cooling medium flowing through the space 5 is led out through the lead-out pipe 7.
冷却媒体としては水または空気を使用する。。Water or air is used as the cooling medium. .
水を使用する場合は電極２に対する冷却効果が大である
。空気を使用する場合は設備面で有利であるとともに、
電極ホルダの腐食を抑制することができる。空気を高圧
にして使用すると冷却効果を高めることができる。この
ようにして電極ホルダＪの内部に位置する電極２の部分
、すなわち炉壁１３の外側に位置する電極２の部分を冷
却媒体により間接的に冷却する。また、ホルダ内管４と
ホルダ内管４の内側に位置する電極２との間の空間部の
空気を、真空ポンプの駆動により連通孔８および真空引
き管９を通して排出し、ホルダ内管４と電極２との間の
空間部を真空にする。これによりホルダ内管４の内側に
位置する電極２の表面は空気に触れずに済み空気による
酸化を防止できる。さらに、電極ホルダ１の内部に位置
する電極２の表面は粗面２ａとしであるので、電極２の
熱放散が大で冷却効果を高めることができる。When water is used, the cooling effect on the electrode 2 is great. When using air, it is advantageous in terms of equipment, and
Corrosion of the electrode holder can be suppressed. Using air at high pressure can increase the cooling effect. In this way, the portion of the electrode 2 located inside the electrode holder J, that is, the portion of the electrode 2 located outside the furnace wall 13, is indirectly cooled by the cooling medium. In addition, the air in the space between the holder inner tube 4 and the electrode 2 located inside the holder inner tube 4 is discharged through the communication hole 8 and the evacuation tube 9 by driving the vacuum pump, and the holder inner tube 4 and the The space between the electrode 2 and the electrode 2 is evacuated. Thereby, the surface of the electrode 2 located inside the holder inner tube 4 does not come into contact with air, and oxidation due to air can be prevented. Further, since the surface of the electrode 2 located inside the electrode holder 1 is a rough surface 2a, heat dissipation of the electrode 2 is large and the cooling effect can be enhanced.
以上説明したように本発明のガラス溶融用電極構造体に
よれば、ガラス溶融炉の外部に位置する電極を冷却媒体
により間接的に冷却することにより、冷却媒体による酸
化を伴うことなく電極を良好に冷却して電極の酸化消耗
を防止できる。As explained above, according to the glass melting electrode structure of the present invention, by indirectly cooling the electrode located outside the glass melting furnace with a cooling medium, the electrode can be maintained in a good condition without being oxidized by the cooling medium. The electrodes can be cooled to prevent oxidative wear and tear.
図面は本発明の電極構造体の一実施例を示す縦断面図で
ある。
１・・・電極ホルダ、２・・・電極、２ｈ・・・粗面、
３・・・ホルダ外管、４・・・ホルダ内管、５・・・空
間部、６・・・導入管、７・・・導出管、９・・・真空
引き管、１２・・・端子、１３・・・炉壁。
出願人代理人 弁理士 鈴 江 武 彦へThe drawing is a longitudinal sectional view showing one embodiment of the electrode structure of the present invention. 1... Electrode holder, 2... Electrode, 2h... Rough surface,
3...Holder outer tube, 4...Holder inner tube, 5...Space, 6...Introduction tube, 7...Outlet tube, 9...Evacuation tube, 12...Terminal , 13... Furnace wall. To the applicant's representative and patent attorney, Takehiko Suzue
Claims (6)
体を流す空間部を電極を囲んで設けた電極ホルダとを具
備することを特徴とするガラス溶融用電極構造体。(1) A glass melting electrode structure comprising a glass melting electrode and an electrode holder surrounding the electrode with a space through which a cooling medium for cooling the electrode flows.
のガラス溶融用電極構造体。(2) The electrode structure for glass melting according to claim 1, wherein the cooling medium is water.
載のガラス溶融用電極構造体。(3) The glass melting electrode structure according to claim 1, wherein the cooling medium is air.
特許請求の範囲第１項ないし第３項いずれかに記載のガ
ラス溶融用電極構造体。(4) The glass melting electrode structure according to any one of claims 1 to 3, wherein the space between the electrode and the electrode holder is vacuumed.
ある特許請求の範囲第１項ないし第４項いずれかに記載
のガラス溶融用電極構造体。(5) The glass melting electrode structure according to any one of claims 1 to 4, wherein the surface of the portion of the electrode surrounded by the electrode holder is a rough surface.
範囲第１項ないし第５項いずれかに記載のガラス溶融用
電極構造体。(6) The electrode structure for glass melting according to any one of claims 1 to 5, wherein the electrode is made of molybdenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13230784A JPS6114142A (en) | 1984-06-27 | 1984-06-27 | Electrode structural body for melting glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13230784A JPS6114142A (en) | 1984-06-27 | 1984-06-27 | Electrode structural body for melting glass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6114142A true JPS6114142A (en) | 1986-01-22 |
Family
ID=15078242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13230784A Pending JPS6114142A (en) | 1984-06-27 | 1984-06-27 | Electrode structural body for melting glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6114142A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007084426A (en) * | 2005-09-19 | 2007-04-05 | Schott Ag | Glass melt electrode and method for melting glass or glass ceramic |
| JP2010541157A (en) * | 2007-09-25 | 2010-12-24 | サンドビック インテレクチュアル プロパティー アクティエボラーグ | Terminal for electrical resistance element |
| DE102009029203A1 (en) * | 2009-09-04 | 2011-03-17 | Schott Ag | Melting furnace useful for melting glass, comprises a wall made of a refractory material having an opening, and a heating arrangement having an electrode holder connected to a heating electrode |
-
1984
- 1984-06-27 JP JP13230784A patent/JPS6114142A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007084426A (en) * | 2005-09-19 | 2007-04-05 | Schott Ag | Glass melt electrode and method for melting glass or glass ceramic |
| JP2010541157A (en) * | 2007-09-25 | 2010-12-24 | サンドビック インテレクチュアル プロパティー アクティエボラーグ | Terminal for electrical resistance element |
| DE102009029203A1 (en) * | 2009-09-04 | 2011-03-17 | Schott Ag | Melting furnace useful for melting glass, comprises a wall made of a refractory material having an opening, and a heating arrangement having an electrode holder connected to a heating electrode |
| DE102009029203B4 (en) * | 2009-09-04 | 2012-10-04 | Schott Ag | Glass melting tank |
| DE102009029203B9 (en) * | 2009-09-04 | 2012-12-13 | Schott Ag | Glass melting tank |
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