CN85103528A

CN85103528A - Arrangment of electrodes

Info

Publication number: CN85103528A
Application number: CN85103528.0A
Authority: CN
Inventors: 格鲁思尼
Original assignee: Schott Glaswerke AG
Current assignee: Schott AG
Priority date: 1985-05-06
Filing date: 1985-05-06
Publication date: 1986-11-05
Also published as: CN1010228B

Abstract

A kind of arrangment of electrodes that is used to make the heating of glass melting electricity groove, each electrode (1,2,3) all is made up of several segment distance electrode pads of laying parallel to each other (1b, 2b, 3b) that are spaced from each other, these electrode pads are fixed on again on the connect elements (1c, 2c, 3c), the connect elements of adjacent two electrodes (1,2,3) is parallel to each other, and the electrode pad of an electrode is with respect to the pole plate of second electrode polar plate spacing that staggers half.Like this, electrode pad puts in respectively in the intermediate space of adjacent electrode, has reached the specific volume power of bigger glass melt with this way, and can not damage the refractory materials (Fig. 2) of groove.

Description

Arrangment of electrodes

What the present invention relates to melts the arrangment of electrodes of electric groove at heating glass, usefulness be some flat poles, they respectively are fixed on the strutbeam.

The method that the heating glass smelting furnace is known has snead process and indirect heating method, and the latter only is used for melting channel and crucible oven.

Direct heating is to be undertaken by the electrode that is immersed in the melt, and this depends on the ionic conductivity of glass solution, and the latter is depended on the Chemical Composition of this kind glass, especially depends on the wherein content of alkali and alkaline-earth metal.

By " the glass melting stove " of W.Trier, Springer press 1984 version (208 to 239 pages) as can be known: heating with stick electrode or plate electrode has various implementation methods and arrangement method.Usually mode is that two plate electrodes vertically are contained on two relative trough wall surfaces.

For the design of this electric installation, the resistance of knowing this heating target is very significant.What will consider here is: electric current is to carry out in a kind of mode of spatial spread from an electrode stream to another electrode, and current density is very different at different positions.Therefore, pre-determine in the electric current distribution of different positions and the size of resistance and just become a key problem.

Calculating provides the size of power, must consider the resistance of refractory materials and the resistance of glass solution.Reducing of refractory materials resistance having under the situation of external disturbance, may cause partial power to absorb, thereby cause temperature to rise refractory materials damaged.

This phenomenon is called thermolability, and for example it can be caused by the electrode cooling failure, along with current density strengthens, and the expansion of the increase of refractory materials resistivity gradient and the geometrical dimension in observed zone, this thermolability has also strengthened.

This unstable in refractory materials, in glass, just do not have much danger, because in the measure of taking for the clearing house that increases glass between the electrode in the glass, yet can prevent this instable generation-, under popular electrode arrangement at present and electrode structure, do not allow the fusing power of unit volume to be significantly increased.

In addition, cool off may change on the necessary cooling power limit structural for making electrode, cooling power is 2 to 6 kilowatts under an electrode situation, and here, the size of electrode should be each other in certain ratio.

Task of the present invention just produces therefrom, and he will find out a kind of arrangment of electrodes exactly, compares with general electrode and arrangement thereof, can reach the purpose that improves power with it.

Reached this target with a kind of electrode arrangement of doing by this patent requirement.

The electrode arrangement of being undertaken by the present invention is with the following basis that is thought of as:

The total power of a heating circuit is:

N _Ges＝N _Glas+N _ff

＝R _GlasI ² _Glas+R _ffI ² _ff

＝U ²( 1/(R _Glas) + 1/(R _ff) )

Here R=(pl)/(f), p represents the resistivity of glass or refractory materials, 1 their length of expression

FF represents its area.* subscript Glas represents glass, and ff represents refractory materials, and Ges represents summation.＊

R Glas is more little, and F Glas is big more), and Rff big more (also promptly: I ff is big more, and F ff is more little), that some that then belongs to glass in the total power is also just big more, and the burden that refractory materials bears is also just more little.* annotate: this section is that the translator adds.

The specific volume power of solution can be more much bigger than what reach usually at present, and refractory materials is sustained damage, and that is to say, thermolability can not occur.Under these given conditions, this move a little preferably by strengthen as far as possible ratio lff/l Glas and

Reach.Here, the length ratio can be made intensive and changes.

Figure by means of the exemplary illustrated way of realization further explains electrode arrangement of the present invention below.

These figure are:

Fig. 1. according to the front view of electrode arrangement of the present invention.

Fig. 2. the top view that electrode is arranged

Fig. 3. the vertical section that glass furnace is arranged together with its electrode.

Fig. 4. along Fig. 3 B-B or sectional view.

Fig. 5. the partial vertical sectional view of a glass furnace of arranging with another kind of electrode.

Fig. 6. along the sectional view of Fig. 5 C-C line

Shown in Fig. 1 is the front view of

electrode

1,2 and 3, and figure medium-

height trestle

1a, 2a and 3a are fixed in refractory materials 4 at the end 5 of glass guide channel.Battery lead plate 1b, 2b arrange parallelly with 3a with

support

1a, 2a respectively with 3b.

Shown in Fig. 2 is the electrode arrangement of looking from the top.Electrode 1,2 and 3 each formed by 4

electrode plate

1b, 2b and 3b and each connect elements 1c, a 2c and 3c, these connect elements are separately fixed at again on three supports of 1a, 2a and 3a.

Battery lead plate

1b, 2b and 3b arrange respectively from a distance, and parallel to each

other.Support

1a, 2a and 3a are arranged to a row respectively, couple together by connect

elements

1c, 2c and 3c, and these connect elements equally also are made of plank.They are supporting battery lead plate.The connect elements of adjacent electrode is parallel to each other.

The battery lead plate of an electrode 1 is with respect to the battery lead plate of adjacent electrode 2 polar plate spacing that staggers half, and like this, the pole plate 1b of electrode 1 has stretched into respectively in the intermediate space of pole plate 2b of adjacent electrode 2.For electrode 3 also is same situation.

Shown in Fig. 3 and Fig. 4 is the vertical cross section of a table glass stove, and electrode the 1, the 2nd among the figure, and in trough rim entered glass guide channel, its advantage was from the top: be full of by molten glass at trough and under the awfully hot situation, also can change these motors.For this reason, as long as

stone

6,6a(Fig. 3) remove, perhaps furnace roof 14(Fig. 5) rise, and remove stone 13.

Support

1a, 2a are arranged on the glass edge 7.

Electrode suppor can be arranged in (Fig. 3 and Fig. 4) on the relative two sides, perhaps (Fig. 5 and Fig. 6) electrode can hang in the glass vacantly in the same side, perhaps by 10 of molybdenum plates on bottom land 5, battery lead plate 1b, 2b are by determining deviation piece 17a to 17h(Fig. 6) supporting mutually, like this, battery lead plate 1b, 2b have accurately kept its spacing once loading onto, these determining deviation pieces 17 are to be made by the material that a kind of heatproof degree changes, if it gets loose from battery lead plate, in the middle of glass, melt, also can not float and cause what trouble.

Support

1a, 2a, set screw 8a and joint bolt 8b are made by molybdenum, they be in glass-mirror A-A below, be entirely glass metal and wash away.The exterior portion 8 of support is made by the material of heat and flame.

As far as possible little and make the inside part of groove and the exchange of the glass between the exterior portion as far as possible little for making in 11 place's glass flows, cool off with nozzle 12 introduction air.

Claims

1, be used for a kind of arrangment of electrodes of glass melting tank furnace, use some flat poles, electrode is separately fixed on the support, and routine feature is down arranged:

Each electrode (1) all has two battery lead plates (1b) that are contained on the connect elements (1c) at least;

The connect elements (1c, 2c) of two adjacent electrodes (1,2) is arranged parallel to each otherly;

These battery lead plates (1b) arrange the segment distance that separates each other, and parallel to each other;

These battery lead plates (1b, 2b) put in the intermediate space of the battery lead plate (1b, 2b) of adjacent electrode (1,2) respectively.

2, according to the arrangement that following feature is arranged of claim 1: the battery lead plate (1b) of an electrode (1) is with respect to the battery lead plate of second electrode machine distance between plates that staggers half.

3, according to the arrangement that following feature is arranged of one of claim 1.2: each in these electrodes (1,2,3) all has a support (1a, 2a, 3a) at least.

4, according to the arrangement that following feature is arranged one of in the claim 1 to 3: these supports (1a, 2a, 3a) respectively are arranged in a row, and couple together by connect elements (1c, 2c, 3c).

5, according to the arrangement that following feature is arranged one of in the claim 1 to 4: these connect elements (1c, 2c, 3c) are by some dull and stereotyped compositions.

6, according to the arrangement of the following feature one of in the claim 1 to 5: support (1a) is arranged on the bottom (5) of glass guide channel.

7, according to the arrangement that following feature is arranged one of in the claim 1 to 5: support (1a) is arranged on the edge (7) of glass guide channel, and is immersed in the glass solution.

8, according to the arrangement that following feature is arranged of claim 7: support (1a, 2a) is arranged on two relative sides of glass guide channel.

9, according to the arrangement that following feature is arranged of claim 7: support (1a, 2a) is arranged on the same side of glass guide channel.

10, according to the arrangement that following feature is arranged one of in the claim 1 to 9: between battery lead plate (1b), arranged some determining deviation pieces (17a to 17h).

11, according to the arrangement that following feature is arranged one of in the claim 7 to 10: go up in glass guide channel bottom (5) for support electrode and arranged some molybdenum plates (10).

12, according to the arrangement that following feature is arranged one of in the claim 7 to 11: arranged some air nozzles (12) in glass guide channel edge (7).