JP4990230B2 - Glass conduit - Google Patents

Glass conduit Download PDF

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JP4990230B2
JP4990230B2 JP2008157315A JP2008157315A JP4990230B2 JP 4990230 B2 JP4990230 B2 JP 4990230B2 JP 2008157315 A JP2008157315 A JP 2008157315A JP 2008157315 A JP2008157315 A JP 2008157315A JP 4990230 B2 JP4990230 B2 JP 4990230B2
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inner ring
ring portion
electrode
center
ring part
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JP2009298671A (en
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次伸 村上
哲郎 君嶋
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Avanstrate Inc
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Avanstrate Inc
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/26—Outlets, e.g. drains, siphons; Overflows, e.g. for supplying the float tank, tweels
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B7/00—Distributors for the molten glass; Means for taking-off charges of molten glass; Producing the gob, e.g. controlling the gob shape, weight or delivery tact
    • C03B7/08—Feeder spouts, e.g. gob feeders
    • C03B7/094—Means for heating, cooling or insulation
    • C03B7/096—Means for heating, cooling or insulation for heating
    • C03B7/098—Means for heating, cooling or insulation for heating electric

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a glass conduit which can relax the concentration of electric power. <P>SOLUTION: The glass conduit 1 is provided with: a conduit body 2; flanges 3 provided at both the edges of the conduit body 2; and electrodes 4 pulled out from the flanges 3, respectively. Each flange 3 comprises: an inner ring part 31 connected with the conduit body 2; and an outer ring part 32 surrounding the inner ring 31 and connected with each electrode 4. The inner ring 31 is composed of a material having electric resistance higher than that of the outer ring part 32, and the center C<SB>2</SB>of the inner ring part 31 is lies near the side of the electrode 4 from the center C<SB>1</SB>of the conduit body 2. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、溶融ガラスを加熱しながら搬送するガラス導管に関する。   The present invention relates to a glass conduit for conveying molten glass while heating.

従来から、溶融ガラスを加熱しながら搬送するガラス導管が知られている。例えば、特許文献１の図２には、図３に示すようなガラス導管１１が記載されている。   Conventionally, a glass conduit for conveying molten glass while heating is known. For example, FIG. 2 of Patent Document 1 describes a glass conduit 11 as shown in FIG.

このガラス導管１１では、管本体１２の両端にフランジ１３が設けられ、フランジ１３からそれぞれ電極１４が引き出されている。そして、ガラス導管１１では、電極１４に電圧が印加されて管本体１２を介した通電が行われることにより、管本体１２が発熱して管本体１２内を流れる溶融ガラスが加熱される。   In the glass conduit 11, flanges 13 are provided at both ends of the tube body 12, and electrodes 14 are drawn from the flanges 13, respectively. In the glass conduit 11, when a voltage is applied to the electrode 14 and energization is performed through the tube body 12, the tube body 12 generates heat and the molten glass flowing in the tube body 12 is heated.

なお、特許文献１の図２に記載されているガラス導管１１では、フランジ１３が、全周に亘って一定幅の内環部１３ａおよび外環部１３ｂでダブルリング状に構成されている。
特開平１１−３４９３３４号公報 In addition, in the glass conduit | pipe 11 described in FIG. 2 of patent document 1, the flange 13 is comprised by the double ring shape by the inner ring part 13a and the outer ring part 13b of constant width over the perimeter.
JP-A-11-349334

ところで、一方の電極１４から他方の電極１４に流れる電流は、それらを結ぶ最短ルート（すなわち電気抵抗が最も小さくなるルート）を集中的に通るため、その最短ルート上に電力集中が生じる。このため、管本体１２とフランジ１３との接続部分のうち電極１４に最も近接する部分ａの電流密度が高くなり、その近接部分ａが過度に発熱して破損するおそれがある。これを防止するには、ガラス導管１１に供給する電力量をある程度に抑える必要がある。   By the way, since the current flowing from one electrode 14 to the other electrode 14 intensively passes through the shortest route connecting them (that is, the route having the smallest electric resistance), power concentration occurs on the shortest route. For this reason, the current density of the portion a closest to the electrode 14 in the connecting portion between the tube main body 12 and the flange 13 is increased, and the adjacent portion a may be excessively heated and damaged. In order to prevent this, it is necessary to suppress the amount of power supplied to the glass conduit 11 to some extent.

しかし、このようにガラス導管１１に供給する電力量を抑えると、その分、溶融ガラスの加熱温度が抑えられることになる。そこで、溶融ガラスの加熱温度を上げられるようにするために、電流を分散させて電流集中を緩和することが望まれる。   However, when the amount of electric power supplied to the glass conduit 11 is suppressed in this way, the heating temperature of the molten glass is suppressed accordingly. Therefore, in order to increase the heating temperature of the molten glass, it is desired to reduce the current concentration by dispersing the current.

本発明は、このような事情に鑑み、電力集中を緩和することのできるガラス導管を提供することを目的とする。   In view of such circumstances, an object of the present invention is to provide a glass conduit that can alleviate power concentration.

前記目的を達成するために、本発明は、溶融ガラスを加熱しながら搬送するガラス導管であって、管本体と、前記管本体の両端に設けられたフランジと、前記フランジからそれぞれ引き出された電極とを備え、前記フランジは、前記管本体と接続された内環部と、前記内環部を取り囲み、前記電極と接続された外環部とを有し、前記内環部は、前記外環部よりも電気抵抗の高い材料で構成されており、前記内環部の中心は、前記電極からの電流が前記外環部に沿って前記電極と反対側に回り込むように前記管本体の中心から前記電極側に寄せられている、ガラス導管を提供する。
In order to achieve the above-mentioned object, the present invention provides a glass conduit for conveying molten glass while heating, a tube body, flanges provided at both ends of the tube body, and electrodes drawn from the flanges, respectively. The flange includes an inner ring portion connected to the tube main body, and an outer ring portion surrounding the inner ring portion and connected to the electrode, and the inner ring portion includes the outer ring portion. The center of the inner ring portion is formed from the center of the tube main body so that the current from the electrode wraps around the outer ring portion to the opposite side of the electrode. A glass conduit is provided that is brought to the electrode side.

前記の構成によれば、電気抵抗の高い材料で構成された内環部が電極に向かって偏心しているので、管本体の中心から延びる線上における内環部の抵抗値は、電極に向かう方向から角度が大きくなるにつれて徐々に小さくなる。このため、電極からの電流は、管本体の中心から電極に向かって延びる線上だけでなくその外側に回り込みながら外環部から内環部を介して管本体に伝わるようになる。従って、本発明によれば、電流を分散させて電力集中を緩和することができる。   According to the above configuration, since the inner ring portion made of a material having high electrical resistance is eccentric toward the electrode, the resistance value of the inner ring portion on the line extending from the center of the tube body is from the direction toward the electrode. It gradually decreases as the angle increases. For this reason, the current from the electrode is transmitted from the outer ring portion to the tube main body through the inner ring portion while wrapping around not only on the line extending from the center of the tube main body toward the electrode. Therefore, according to the present invention, it is possible to alleviate power concentration by distributing current.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。なお、以下の説明は本発明の一例に関するものであり、本発明はこれらによって限定されるものではない。   The best mode for carrying out the present invention will be described below with reference to the drawings. The following description relates to an example of the present invention, and the present invention is not limited to these.

図１および図２に示すように、本発明の一実施形態に係るガラス導管１は、溶融ガラスを加熱しながら搬送するものであり、内部を溶融ガラスが流れる管本体２と、管本体２の両端に設けられた一対のフランジ３と、フランジ３からそれぞれ同方向に引き出された一対の電極４とを備えている。   As shown in FIGS. 1 and 2, a glass conduit 1 according to an embodiment of the present invention conveys molten glass while heating, and includes a tube main body 2 through which molten glass flows, and a tube main body 2. A pair of flanges 3 provided at both ends and a pair of electrodes 4 respectively drawn in the same direction from the flange 3 are provided.

管本体２は、円筒状の形状を有している。この管本体２は、白金または白金合金で構成されており、通電されることによって発熱し、そのジュール熱で溶融ガラスを加熱する。管本体２の外径は、例えば５〜１０００ｍｍであり、その肉厚は、例えば０．５〜２ｍｍである。   The tube body 2 has a cylindrical shape. The tube body 2 is made of platinum or a platinum alloy, generates heat when energized, and heats the molten glass with its Joule heat. The outer diameter of the tube body 2 is, for example, 5 to 1000 mm, and the thickness thereof is, for example, 0.5 to 2 mm.

各電極４は、フランジ３の外周縁部から管本体２の径方向外側に延びている。すなわち、本実施形態では、電極４の中心線ＣＬの延長線上に管本体２の中心Ｃ1が位置している。また、各電極４の先端４ａは、フランジ３に向かって広がっている。 Each electrode 4 extends from the outer peripheral edge of the flange 3 to the radially outer side of the tube body 2. That is, in the present embodiment, the center C 1 of the tube body 2 is located on the extension line of the center line CL of the electrode 4. Further, the tip 4 a of each electrode 4 extends toward the flange 3.

各フランジ３は、全周に亘って一定幅を有するものであり、管本体２と同心に配置されている。より詳しくは、各フランジ３は、内環部３１と、内側に内環部３１が嵌め込まれて内環部３１を取り囲む外環部３２とを有している。そして、内環部３１の内周縁部が管本体２と溶接によって接続されており、外環部３２の外周縁部が電極４の先端４ａと溶接によって接続されている。また、内環部３１の外周縁部と外環部３２の内周縁部とも溶接によって接続されている。   Each flange 3 has a constant width over the entire circumference, and is arranged concentrically with the pipe body 2. More specifically, each flange 3 has an inner ring portion 31 and an outer ring portion 32 in which the inner ring portion 31 is fitted inside and surrounds the inner ring portion 31. And the inner peripheral part of the inner ring part 31 is connected with the pipe body 2 by welding, and the outer peripheral part of the outer ring part 32 is connected with the tip 4a of the electrode 4 by welding. Further, the outer peripheral edge portion of the inner ring portion 31 and the inner peripheral edge portion of the outer ring portion 32 are also connected by welding.

内環部３１と外環部３２は、同じ厚みを有していることが好ましい。内環部３１および外環部３２の厚みは、例えば３ｍｍである。   It is preferable that the inner ring portion 31 and the outer ring portion 32 have the same thickness. The inner ring part 31 and the outer ring part 32 have a thickness of 3 mm, for example.

内環部３１は、円形の輪郭を有しており、内環部３１の中心Ｃ2は、管本体２の中心Ｃ1から電極４側に寄せられている。このため、内環部３１の幅は、電極４側から反対側に向かうにつれて次第に狭くなっている。本実施形態では、内環部３１が円形の輪郭を有しているので、内環部３１の中心Ｃ2と管本体２の中心Ｃ1とを結ぶ結び線Ｌ上における電極４側の内環部３１の幅Ｌ1が最大となっており、結び線Ｌ上における電極４と反対側の内環部の幅Ｌ2が最小となっている。 The inner ring portion 31 has a circular outline, and the center C 2 of the inner ring portion 31 is brought closer to the electrode 4 side from the center C 1 of the tube body 2. For this reason, the width | variety of the inner ring part 31 is gradually narrowed as it goes to the opposite side from the electrode 4 side. In this embodiment, the inner since the ring portion 31 has a circular contour, the inner of the inner annular portion 31 center C 2 and the electrode 4 side in the tie line L connecting the center C 1 of the pipe body 2 of the ring The width L 1 of the portion 31 is maximum, and the width L 2 of the inner ring portion on the opposite side of the electrode 4 on the knot line L is minimum.

また、本実施形態では、内環部３１の中心Ｃ2が管本体２の中心Ｃ1から電極４の真ん中に向かって寄せられていて、結び線Ｌが電極４の中心線ＣＬの延長線を構成している。ただし、内環部３１の中心Ｃ2は、電極４の真ん中に向かって寄せられている必要なく、電極４の真ん中から少し横に逸れた方向に向かって寄せられていてもよい。すなわち、内環部３１の中心Ｃ2を寄せる方向は、結び線Ｌが電極４にかかる程度の方向であれば、本発明の効果をある程度は得ることができる。ただし、内環部３１の中心Ｃ2を寄せる方向が電極４の真ん中に向かう方向であれば、本発明の効果を顕著に得ることができる。 In the present embodiment, the center C 2 of the inner ring portion 31 is moved from the center C 1 of the tube body 2 toward the center of the electrode 4, and the connecting line L is an extension of the center line CL of the electrode 4. It is composed. However, the center C 2 of the inner ring portion 31 does not need to be moved toward the center of the electrode 4, and may be moved toward a direction slightly deviated from the center of the electrode 4. In other words, the effect of the present invention can be obtained to some extent if the direction in which the center C 2 of the inner ring portion 31 is moved is such that the connecting line L extends to the electrode 4. However, if the direction in which the center C 2 of the inner ring portion 31 is moved is toward the center of the electrode 4, the effect of the present invention can be remarkably obtained.

内環部３１の中心Ｃ2を管本体２の中心Ｃ1から電極４側に寄せる量、すなわち内環部３１の中心Ｃ2が管本体２の中心Ｃ1から離間する距離は、結び線Ｌ上における電極４側の内環部３１の幅Ｌ1（本実施形態では最大幅）が電極４と反対側の内環部３１の幅Ｌ2（本実施形態では最小幅）の１．５倍以上、より好ましくは５倍以上となる程度が好ましい。 The amount of lapping the center C 2 of the inner ring portion 31 from the center C 1 of the tube body 2 to the electrode 4 side, that is, the distance which the center C 2 of the inner annular portion 31 is spaced apart from the center C 1 of the tube body 2, tie lines L The width L 1 of the inner ring portion 31 on the electrode 4 side (maximum width in this embodiment) is 1.5 times the width L 2 (minimum width in this embodiment) of the inner ring portion 31 on the opposite side of the electrode 4. As described above, it is more preferable that the degree is 5 times or more.

一方、外環部３２は、円形の輪郭を有しており、外環部３２の中心は、管本体２の中心Ｃ1と一致している。このため、外環部３２の幅は、内環部３１とは逆に、電極４側から反対側に向かうにつれて次第に広くなっている。 On the other hand, the outer ring portion 32 has a circular outline, and the center of the outer ring portion 32 coincides with the center C 1 of the tube body 2. For this reason, the width of the outer ring portion 32 is gradually increased from the electrode 4 side to the opposite side, contrary to the inner ring portion 31.

内環部３１は、外環部よりも電気抵抗の高い材料で構成されている。具体的には、外環部３２は、白金で構成されており、内環部３１は、白金合金で構成されている。   The inner ring portion 31 is made of a material having a higher electrical resistance than the outer ring portion. Specifically, the outer ring portion 32 is made of platinum, and the inner ring portion 31 is made of a platinum alloy.

内環部３１を構成する白金合金としては、例えば、白金に、ロジウム、パラジウム、またはイリジウムなどを配合したものを挙げることができる。中でも、白金とロジウムの合金が、機械的強度が高くなるという点で特に好ましい。白金とロジウムの合金を用いる場合、その配合率は、質量比で例えば白金：ロジウム＝７５：２５〜９９：１、特に９：１であることが好ましい。ロジウムの配合率が１０質量％程度であれば、白金合金の電気抵抗が最も高くなるからである。   As a platinum alloy which comprises the inner ring part 31, what mix | blended rhodium, palladium, or iridium etc. can be mentioned, for example. Among them, an alloy of platinum and rhodium is particularly preferable in that the mechanical strength is increased. When an alloy of platinum and rhodium is used, the blending ratio is preferably, for example, platinum: rhodium = 75: 25 to 99: 1, particularly 9: 1 in terms of mass ratio. This is because if the rhodium content is about 10% by mass, the platinum alloy has the highest electrical resistance.

以上説明したガラス導管１であれば、電気抵抗の高い材料で構成された内環部３１が電極４に向かって偏心しているので、管本体２の中心Ｃ1から延びる線上における内環部３１の抵抗値は、電極４に向かう方向から角度が大きくなるにつれて徐々に小さくなる。このため、電極４からの電流は、管本体２の中心Ｃ1から電極４に向かって延びる線上だけでなくその外側に回り込みながら外環部３２から内環部３１を介して管本体２に伝わるようになる。 In the case of the glass conduit 1 described above, the inner ring portion 31 made of a material having high electrical resistance is eccentric toward the electrode 4, so that the inner ring portion 31 on the line extending from the center C 1 of the tube body 2 is The resistance value gradually decreases as the angle increases from the direction toward the electrode 4. For this reason, the current from the electrode 4 is transmitted from the outer ring portion 32 to the tube body 2 through the inner ring portion 31 while wrapping around the outside as well as on the line extending from the center C 1 of the tube body 2 toward the electrode 4. It becomes like this.

このように、本実施形態のガラス導管１によれば、電流を分散させて電力集中を緩和することができる。従って、ガラス導管１に供給する電力量を従来よりも高くして溶融ガラスの加熱温度を上げることが可能になるだけでなく、ガラス導管１に供給する電力量を従来と同程度に保ったとしてもフランジ３１の内環部３１と管本体２との接続部分のうち電極４に最も近接する部分Ａの破損を長期に亘って抑制できるようになる。   Thus, according to the glass conduit | pipe 1 of this embodiment, an electric current can be disperse | distributed and electric power concentration can be eased. Accordingly, it is possible not only to increase the amount of electric power supplied to the glass conduit 1 and raise the heating temperature of the molten glass, but also to maintain the same amount of electric power supplied to the glass conduit 1 as before. In the connection portion between the inner ring portion 31 of the flange 31 and the tube main body 2, the breakage of the portion A closest to the electrode 4 can be suppressed over a long period of time.

なお、前記実施形態では、外環部３２の中心が管本体２の中心Ｃ1と一致しているが、外環部３２は全周に亘って一定幅を有していて、その中心が内環部３１の中心Ｃ2と一致していてもよい。ただし、前記実施形態のように、外環部３２の中心が管本体２の中心Ｃ1と一致していれば、電極４からの電流を電極４と反対側に積極的に導くことができ、電流集中をより緩和することができる。 In the above embodiment, the center of the outer ring portion 32 coincides with the center C 1 of the tube body 2, but the outer ring portion 32 has a constant width over the entire circumference, and the center is the inner portion. It may coincide with the center C 2 of the ring portion 31. However, if the center of the outer ring portion 32 coincides with the center C 1 of the tube body 2 as in the above embodiment, the current from the electrode 4 can be actively guided to the side opposite to the electrode 4, Current concentration can be further reduced.

また、内環部３１および外環部３２の輪郭は、円形である必要はなく、例えば楕円形や多角形であってもよい。   Moreover, the outline of the inner ring part 31 and the outer ring part 32 does not need to be circular, and may be, for example, an ellipse or a polygon.

以下、実施例を挙げて本発明を詳細に説明するが、本発明は、これら実施例に何ら制限されるものではない。   EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated in detail, this invention is not restrict | limited to these Examples at all.

（実施例）
実施例では、管本体の外径を１５０ｍｍ、肉厚を１．５ｍｍとし、内環部の外径を２５０ｍｍ、厚みを３．０ｍｍとし、外環部の外径を３５０ｍｍ、厚みを３．０ｍｍとした。管本体と外環部は白金で構成し、内環部は白金：ロジウムを９：１で配合した白金合金で構成した。そして、内環部の中心を管本体の中心から電極の中央に向かって４０ｍｍ寄せ、外環部の中心を管本体の中心と一致させた。すなわち、電極側の内環部の最大幅は９０ｍｍ、電極と反対側の内環部の最小幅は１０ｍｍであり、電極側の外環部の最小幅は１０ｍｍ、電極と反対側の外環部の最大幅は９０ｍｍであった。 (Example)
In the embodiment, the outer diameter of the tube body is 150 mm, the wall thickness is 1.5 mm, the outer diameter of the inner ring portion is 250 mm, the thickness is 3.0 mm, the outer diameter of the outer ring portion is 350 mm, and the thickness is 3.0 mm. It was. The tube main body and the outer ring part were made of platinum, and the inner ring part was made of a platinum alloy containing 9: 1 of platinum: rhodium. Then, the center of the inner ring portion was moved 40 mm from the center of the tube body toward the center of the electrode, and the center of the outer ring portion was made to coincide with the center of the tube body. That is, the maximum width of the inner ring portion on the electrode side is 90 mm, the minimum width of the inner ring portion on the side opposite to the electrode is 10 mm, the minimum width of the outer ring portion on the electrode side is 10 mm, and the outer ring portion on the side opposite to the electrode The maximum width of was 90 mm.

上記のような寸法設定で構成したガラス導管に対して１０Ｖ×４０００Ａの電力を供給し、安定した状態となったときの、内環部と管本体との接続部分における電極に近接する位置の温度を測定した。測定結果は１２６４℃であった。   The temperature at a position close to the electrode at the connection portion between the inner ring portion and the tube body when 10 V × 4000 A of electric power is supplied to the glass conduit configured as described above and becomes stable. Was measured. The measurement result was 1264 ° C.

（比較例）
比較例では、内環部の中心を管本体の中心と一致させた以外は、実施例と同様にし、内環部と管本体との接続部分における電極に近接する位置の温度を測定した。測定結果は１４４７℃であった。 (Comparative example)
In the comparative example, the temperature at a position close to the electrode at the connection portion between the inner ring portion and the tube main body was measured in the same manner as in the example except that the center of the inner ring portion was matched with the center of the tube main body. The measurement result was 1447 ° C.

この結果から、内環部の中心を電極側に寄せれば、電力集中を緩和できることが分かる。   From this result, it can be seen that power concentration can be alleviated if the center of the inner ring portion is brought closer to the electrode side.

本発明の一実施形態に係るガラス導管を示す斜視図である。It is a perspective view which shows the glass conduit | pipe which concerns on one Embodiment of this invention. 図１のガラス導管の一部断面斜視図である。It is a partial cross section perspective view of the glass conduit | pipe of FIG. 従来のガラス導管を示す斜視図である。It is a perspective view which shows the conventional glass conduit | pipe.

符号の説明Explanation of symbols

１ ガラス導管
２ 管本体
３ フランジ
３１ 内フランジ部
３２ 外フランジ部
４ 電極 DESCRIPTION OF SYMBOLS 1 Glass conduit | pipe 2 Pipe body 3 Flange 31 Inner flange part 32 Outer flange part 4 Electrode

Claims (7)

溶融ガラスを加熱しながら搬送するガラス導管であって、
管本体と、前記管本体の両端に設けられたフランジと、前記フランジからそれぞれ引き出された電極とを備え、
前記フランジは、前記管本体と接続された内環部と、前記内環部を取り囲み、前記電極と接続された外環部とを有し、
前記内環部は、前記外環部よりも電気抵抗の高い材料で構成されており、前記内環部の中心は、前記電極からの電流が前記外環部に沿って前記電極と反対側に回り込むように前記管本体の中心から前記電極側に寄せられている、ガラス導管。 A glass conduit for conveying molten glass while heating,
A pipe body, a flange provided at both ends of the pipe body, and electrodes respectively drawn from the flange,
The flange includes an inner ring part connected to the tube main body, an outer ring part surrounding the inner ring part and connected to the electrode,
The inner ring part is made of a material having a higher electrical resistance than the outer ring part, and the center of the inner ring part is located on the opposite side of the electrode from the current along the outer ring part. A glass conduit that is drawn from the center of the tube body toward the electrode so as to wrap around . 前記外環部の中心は、前記管本体の中心と一致している、請求項１に記載のガラス導管。   The glass conduit according to claim 1, wherein a center of the outer ring portion coincides with a center of the tube body. 前記内環部および前記外環部は、共に円形の輪郭を有している、請求項１または２に記載のガラス導管。   The glass conduit according to claim 1 or 2, wherein both the inner ring portion and the outer ring portion have a circular contour. 前記内環部と前記外環部は、同じ厚みを有している、請求項１〜３のいずれか一項に記載のガラス導管。   The glass conduit according to any one of claims 1 to 3, wherein the inner ring portion and the outer ring portion have the same thickness. 前記内環部の中心が前記管本体の中心から離間する距離は、これらの中心を結ぶ線上における前記電極側の前記内環部の幅が前記電極と反対側の前記内環部の幅の１．５倍以上となるような距離である、請求項１〜４のいずれか一項に記載のガラス導管。   The distance at which the center of the inner ring part is separated from the center of the tube body is such that the width of the inner ring part on the electrode side on the line connecting these centers is one of the width of the inner ring part on the opposite side of the electrode. The glass conduit according to any one of claims 1 to 4, which has a distance of at least 5 times. 前記外環部は、白金で構成されており、前記内環部は、白金合金で構成されている、請求項１〜５のいずれか一項に記載のガラス導管。   6. The glass conduit according to claim 1, wherein the outer ring portion is made of platinum, and the inner ring portion is made of a platinum alloy. 前記白金合金は、白金とロジウムの合金である、請求項６に記載のガラス導管。   The glass conduit according to claim 6, wherein the platinum alloy is an alloy of platinum and rhodium.
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CN102583955A (en) * 2012-01-19 2012-07-18 河南国控宇飞电子玻璃有限公司 Direct electric-heating flange used for platinum channel
WO2015057646A1 (en) * 2013-10-18 2015-04-23 Corning Incorporated Apparatus and method for making glass
US10633274B2 (en) 2015-03-23 2020-04-28 Corning Incorporated Apparatus and method for heating a metallic vessel
US10633276B2 (en) 2015-10-21 2020-04-28 Corning Incorporated Apparatus and method for heating a metallic vessel

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US8269131B2 (en) 2008-02-28 2012-09-18 Corning Incorporated Nickel-containing flanges for use in direct resistance heating of platinum-containing vessels
US8274018B2 (en) * 2010-02-25 2012-09-25 Corning Incorporated Apparatus for use in direct resistance heating of platinum-containing vessels
US8857219B2 (en) 2012-07-11 2014-10-14 Corning Incorporated Apparatus for use in direct resistance heating of platinum-containing vessels
JP5711190B2 (en) * 2012-09-05 2015-04-30 ＡｖａｎＳｔｒａｔｅ株式会社 Glass conduit and method for producing glass plate
JP6449607B2 (en) * 2014-09-30 2019-01-09 ＡｖａｎＳｔｒａｔｅ株式会社 Glass substrate manufacturing method and glass substrate manufacturing apparatus

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CN102583955A (en) * 2012-01-19 2012-07-18 河南国控宇飞电子玻璃有限公司 Direct electric-heating flange used for platinum channel
WO2015057646A1 (en) * 2013-10-18 2015-04-23 Corning Incorporated Apparatus and method for making glass
US10633274B2 (en) 2015-03-23 2020-04-28 Corning Incorporated Apparatus and method for heating a metallic vessel
US10633276B2 (en) 2015-10-21 2020-04-28 Corning Incorporated Apparatus and method for heating a metallic vessel
US10800695B2 (en) 2015-10-21 2020-10-13 Corning Incorporated Apparatus and method for heating a metallic vessel

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