CN219869870U

CN219869870U - Liquid level probe vertical pipe

Info

Publication number: CN219869870U
Application number: CN202223226092.4U
Authority: CN
Inventors: O·Y·W·奥博茨; 安章宪; 金振洙; 高奉助; 李圣国
Original assignee: Corning Inc
Current assignee: Corning Inc
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-10-20
Anticipated expiration: 2032-12-02

Abstract

The present utility model relates to a new level probe riser tube as part of a glass manufacturing system, comprising: a tube extending upwardly above and above the free surface of the molten glass and a condensate collection device having at least two baffles and attached to the inner wall of the tube and disposed below the free surface of the molten glass. The liquid level probe riser pipe can reduce platinum inclusion defects in the glass substrate.

Description

Liquid level probe vertical pipe

Technical Field

The present utility model relates to a liquid level probe riser, and more particularly, to a liquid level probe riser with a unique condensate collection device that can be used in the manufacturing process of flat panel displays.

Background

Platinum (Pt) inclusion defectsIs one of the main drawbacks in glass manufacturing. The formation of Pt inclusions can be described by equation 1 and equation 2 (as shown below). Many of the components in the glass production process may be made of platinum or platinum-containing metals such as platinum rhodium, platinum iridium, and combinations thereof, O in the gas space ₂ May react with the Pt surface of these parts to form a gas-phase PtO ₂ (equation 1). Then, if such PtO ₂ Transfer of gas to temperature or O ₂ In the region of lower concentration, the reaction shown in equation 2 occurs. If this reaction occurs at the glass surface, pt condensate that forms may become entrained in the molten glass and become Pt inclusion defects in the glass substrate.

According to the above mechanism of Pt inclusion formation, the environment containing Pt wall, gas space and glass free surface is a necessary condition for reaction to occur. The level probe standpipe is one of the areas where Pt inclusions may occur.

Disclosure of Invention

The technical scheme of the utility model is as follows: an improved level probe riser is provided as part of a glass manufacturing system including a space above a free surface of molten glass, a tube extending upwardly and above the free surface of molten glass, and a condensate collection device having at least two baffles and attached to an inner wall of the tube and below the free surface of molten glass.

In some embodiments, the tube is a wall of a liquid level probe riser.

In some embodiments, the tube has a smaller diameter than the level probe riser and is positioned within the level probe riser.

In some embodiments, baffles are disposed at different height positions of the tube.

In some embodiments, the baffles overlap in the horizontal direction and cover the inner horizontal cross section of the tube.

In some embodiments, at least one of the baffles extends to a position of a central axis of the tube.

In some embodiments, the baffles are oriented upward at an angle.

In some embodiments, the plane of the baffle and the wall of the tube are within an angle between 30 degrees and 60 degrees.

In some embodiments, the baffle is flat or curved upwardly bent.

It is to be understood that both the foregoing general description and the following detailed description are exemplary of the utility model, and are intended to provide an overview or framework for understanding the nature and character of the utility model as it is claimed. The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification. The drawings illustrate various embodiments of the utility model and, together with the description, serve to explain the principles and operations of the utility model.

Drawings

The following drawings illustrate typical embodiments of the utility model and are not to be considered limiting of its scope. The figures are not necessarily to scale, some features and some views of the figures may be exaggerated in scale or simplified for clarity and conciseness.

FIG. 1 is a schematic view of an exemplary glass manufacturing system for manufacturing glass sheets using a fusion draw process.

FIG. 2 is a schematic perspective view of a liquid level probe riser according to an exemplary embodiment of the utility model.

FIG. 3 is a schematic perspective view of a liquid level probe riser according to an exemplary embodiment of the utility model.

FIG. 4 is a schematic view of a liquid level probe riser with four baffles according to an exemplary embodiment of the present utility model.

FIG. 5 is a schematic view of a baffle according to an exemplary embodiment of the present utility model

Detailed Description

Before turning to the detailed description and drawings, it is to be understood that the present technology is not limited to the details or methodology set forth in the detailed description or illustrated in the drawings. For example, features and attributes illustrated in the figures or associated with one of the embodiments may be well applied to another embodiment as would be understood by one of ordinary skill in the art.

Referring to FIG. 1, a schematic diagram of an exemplary glass manufacturing system 100 is shown, according to an embodiment of the present utility model. The glass manufacturing system 100 includes a melting vessel 110, a fusion to fining tube 115, a fining vessel 120, a finer to stir chamber tube 125 (with a level probe standpipe 127 extending therefrom), a stir chamber 130 (e.g., a mixing vessel 130), a stir chamber to bowl connecting tube 135, a bowl 140 (e.g., a delivery vessel 140), a downcomer 145, a Fusion Draw Machine (FDM) 150 (including an inlet 155, a forming vessel 160, and a pull roll assembly 165), and a Traveling Anvil Machine (TAM) 170. Further, the glass manufacturing system 100 includes a capsule 172, the capsule 172 positioned around the fining vessel 120, the finer to stir chamber tube 125, the level probe standpipe 127, the stir chamber 130, the stir chamber to bowl connecting tube 135, the bowl 140, at least a portion of the fusion to the fining tube 115, and at least a portion of the downcomer 145. In general, the components 115, 120, 125, 127, 130, 135, 140, 145, and 155 may be made of platinum or platinum-containing metals such as platinum rhodium, platinum iridium, and combinations thereof, but they may also include other heat resistant metals such as platinum, rhenium, ruthenium, and osmium, or alloys thereof.

The melting vessel 110 is where the glass batch materials are introduced as indicated by arrow 112 and melted to form molten glass 114. Refining vessel 120 (e.g., refining tube 120) is connected to melting vessel 110 by melting to refining tube 115. Refining vessel 120 has a high temperature processing region that receives molten glass 114 (not shown in this location) from melting vessel 110 and removes bubbles from molten glass 114 therein. Refining vessel 120 is connected to stir chamber 130 by a refiner to stir chamber tube 125. The stir chamber 130 is connected to the bowl 140 by a stir chamber to bowl connection tube 135. The bowl 140 conveys the molten glass 114 (not shown) through a downcomer 145 to the FDM150.

The FDM150 includes an inlet 155, a forming vessel 160 (e.g., a spacer tube 160), and a pull roll assembly 165. The inlet 155 receives molten glass 114 (not shown) from the downcomer 145 and then the molten glass 114 (not shown) flows from the inlet 155 to the forming vessel 160. The forming vessel 160 includes an opening 162 that receives the molten glass 114 (not shown), which molten glass 114 flows into a trough 164 and then overflows and runs down two opposite sides 166a and 166b before being melted together at a root 168 to form the glass sheet 109. The pull roll assembly 165 receives the glass sheet 109 and outputs a drawn glass sheet 111.TAM170 receives drawn glass sheet 111 and separates drawn glass sheet 111 into separate glass sheets 113. The glass manufacturing system 100 also includes fiber-based gaskets 102, 104, 106, and 108 to reduce bubbles caused by heat elements within the glass manufacturing apparatus.

The primary source of condensable oxides in molten glass includes hot platinum surfaces. The level probe standpipe 127 is one of the areas where Pt inclusions may occur. The present utility model provides a novel level probe riser 200 with a condensate collection device 240 that can prevent Pt condensate formed above the free surface 260 of the molten glass from sinking into the flow of molten glass from the finer to the stir chamber tube 125, thereby preventing Pt inclusion defects from forming in the glass substrate.

Referring to fig. 2, according to some embodiments of the utility model, a level probe riser pipe 200 may have a space 210 above the free surface of molten glass, a tube 230 extending upward and above the free surface of molten glass, and a condensate collection device 240, the condensate collection device 240 having at least two baffles 250, the baffles 250 may be disposed on an inner wall of the tube 230 and below the free surface 260 of molten glass. The baffles may be made of Pt, rhodium (Ph) or Pt-Rh alloys. The tube 230 has a smaller diameter than the level probe riser 200 and is positioned within the level probe riser 200.

Referring to FIG. 3, according to some embodiments of the utility model, a wall 220 of the level probe riser 200 may be used as the tube 230. The baffle 250 may be welded to the inner wall of the level probe standpipe 230. The baffle 250 overlaps in the horizontal direction and covers the inner horizontal cross section of the tube 230. The baffles 250 are disposed at different height positions of the tube 230. According to some embodiments of the utility model, at least one of the baffles 250 extends to the location of the central axis 410 of the tube 230. Baffle 250 is oriented upward at an angle 310, and the plane of baffle 250 and the wall of tube 230 may be within an angle 310 of between 30 degrees and 60 degrees.

According to some embodiments of the utility model, condensate collection apparatus 240 may include more than two baffles 250, as shown in FIG. 4. According to some embodiments of the present utility model, the baffle 250 may be flat (as shown in fig. 5) or curved upwardly.

It should be understood that the condensate collection apparatus of the present utility model may be used in other parts of a glass manufacturing system, such as melters, stir chambers, and the like. The applicant envisages that such condensate collection apparatus may also be used outside of glass manufacturing systems, possibly with equipment for controlling particles and debris.

Claims

1. A level probe riser tube as part of a glass manufacturing system, comprising:

a space above the free surface of the molten glass;

a tube extending upwardly and above the free surface of the molten glass; and

a condensate collection device having at least two baffles and attached to the inner wall of the tube, the baffles being located below the free surface of the molten glass.

2. The liquid level probe riser of claim 1, wherein the tube is a wall of a liquid level probe riser.

3. The level probe riser of claim 1, wherein the tube has a smaller diameter than the level probe riser and is positioned within the level probe riser.

4. The fluid level probe riser of claim 1, wherein the baffles are disposed at different height positions of the pipe.

5. The fluid level probe riser of claim 1, wherein the baffle overlaps in a horizontal direction and covers an interior horizontal cross section of the tube.

6. The fluid level probe riser of claim 1, wherein at least one of the baffles extends to a location of a central axis of the pipe.

7. The fluid level probe riser of claim 1, wherein the baffle is oriented upwardly at an angle.

8. The fluid level probe riser of claim 7, wherein the plane of the baffle and the wall of the tube are within an angle of between 30 degrees and 60 degrees.

9. The liquid level probe riser of claim 1, wherein the baffle is flat or curved upwardly bent.