CN212954845U - Temperature regulating device for glass melt - Google Patents
Temperature regulating device for glass melt Download PDFInfo
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- CN212954845U CN212954845U CN202021264318.8U CN202021264318U CN212954845U CN 212954845 U CN212954845 U CN 212954845U CN 202021264318 U CN202021264318 U CN 202021264318U CN 212954845 U CN212954845 U CN 212954845U
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Abstract
The utility model relates to a temperature adjusting device of glass melt, which comprises a temperature measuring device, a control device, a heating resistance card and a cooling pipe; the heating resistor disc is circumferentially arranged on the outer side of the guide pipe; the cooling pipe is circumferentially arranged on the outer side of the heating resistor disc; the inlet and outlet of the cooling pipe are communicated with the outside, and cooling medium flows through the cooling pipe; a temperature measuring device is arranged between the guide pipe and the heating resistor disc and is arranged on the outer surface of the guide pipe; the control device comprises a controller, a comparator and a memory; the comparator is connected with the memory in a data mode; the temperature measuring device is connected with the input end of the signal converter, the output end of the signal converter is connected with the input end of the comparator, the output end of the comparator is connected with the input end of the controller, and the control end of the controller respectively controls the heating power of the heating resistor disc and the flow of the cooling medium in the cooling pipe to control the temperature of the glass melt. The temperature of the glass melt is adjusted quickly, the adjusting capacity is strong, and the adverse control effect of high temperature on the glass melt is avoided.
Description
Technical Field
The utility model relates to a liquid crystal flat glass makes the field, specifically is a temperature regulation apparatus of glass fuse-element.
Background
The overflow downdraw method is used for producing liquid crystal plate glass, one end of the isostatic pressing pipe is connected with a guide pipe, the guide pipe is used for converting a vertically left glass melt into horizontal flow, and meanwhile, the glass melt has a certain movement speed in the horizontal direction, so that the glass accumulation at the inlet section of the isostatic pressing pipe can be ensured, and the glass melt can also reach the far end of the isostatic pressing pipe. During the flow in the conduit, it is the only opportunity to finally adjust the temperature homogeneity of the glass melt by thermal conduction. It can thus be concluded that the glass melt at different points of the cross-section of the conduit corresponds to different positions of the glass sheet. The speed of the glass melt flowing downwards along the two sides of the isostatic pressing pipe can be directly adjusted by adjusting different heating powers through a heater outside the guide pipe, and the forming quality such as the final plate thickness is directly influenced. The disadvantage is that the glass melt leaves the supply pipe and, after entering the guide pipe and the isostatic pressing pipe, cannot be heated by conduction, and only the thermal radiation method is used to keep the temperature of the glass melt.
However, the temperature requirements for flowing the glass melt along the isopipe are high, and not only is the temperature uniformity required, but also the temperature stability and accuracy are also high. As shown in fig. 1, the periphery of the conduit is covered with a heater in the conventional sense, and the conduit and most of the heaters on the periphery are hidden in the heat insulation material, but if the temperature of the incoming material is too high, the temperature can be reduced only by heat dissipation of the heat insulation material, and the capability of rapidly reducing the temperature is not provided. And only rely on the heating of heater, it is reliable to the homogeneity control of temperature, to the accuracy, if the glass melt temperature that flows into the pipe is higher, can't be to the glass melt rapid cooling in corresponding region, just lost the regulating power.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a temperature regulation apparatus of glass fuse-element, it is fast to the temperature regulation of glass fuse-element, and the regulating power is strong, the temperature of the control glass fuse-element that can be accurate improves the overflow quality of glass fuse-element, avoids the control harmful effects that high temperature caused to the glass fuse-element.
The utility model discloses a realize through following technical scheme:
a temperature regulating device for glass melt comprises a temperature measuring device, a control device, a heating resistor disc and a cooling pipe;
the heating resistor disc is circumferentially arranged on the outer side of the guide pipe; the cooling pipe is circumferentially arranged on the outer side of the heating resistor disc; the inlet and outlet of the cooling pipe are communicated with the outside, and a cooling medium flows through the cooling pipe;
a temperature measuring device is arranged between the guide pipe and the heating resistor disc and is arranged on the outer surface of the guide pipe;
the control device comprises a controller, a comparator and a memory with a built-in comparison value; the comparator is in data connection with a memory;
the temperature measuring device is connected with the input end of the signal converter, the output end of the signal converter is connected with the input end of the comparator, the output end of the comparator is connected with the input end of the controller, and the control end of the controller respectively controls the heating power of the heating resistor disc and the flow of the cooling medium in the cooling pipe to control the temperature of the glass melt.
Preferably, the heating resistor disc is arc-shaped, the arc-shaped heating resistor disc is unevenly arranged in blocks on the outer side of the circumferential direction of the guide pipe, and the number of the blocks is not less than two and not more than ten.
Further, the cooling pipe is the coiled pipe, and tangent setting forms the arc tube panel between the adjacent coiled pipe, and a plurality of arc tube panels circumference sets up in the outside of heating resistor piece, and two and no longer than ten are no less than to the quantity of arc tube panel.
Furthermore, the number of the segments of the arc tube panel is equal to that of the segments of the heating resistor disc, and the bending radians of the arc tube panel and the arc segments of the heating resistor disc are equal.
Preferably, the temperature measuring devices are arranged on the outer surface of the conduit in the circumferential direction, and the number of the temperature measuring devices is not less than the number of the blocks of the heating resistor disc.
Preferably, a flow meter, a flow regulating valve and a temperature detecting device are arranged at the inlet of the cooling pipe.
Preferably, the heat preservation layer is arranged on the outer periphery of the guide pipe, and the temperature measuring device, the heating resistor disc and the cooling pipe are all arranged in the heat preservation layer.
Preferably, the cooling medium flowing through the cooling pipe is compressed air.
Preferably, the temperature measuring device is a thermocouple.
Furthermore, the temperature measuring device is fixed on the outer surface of the guide pipe in a thermocouple welding mode.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model relates to a temperature adjusting device of glass melt, which is characterized in that a cooling pipe is arranged outside a heating resistance card, and the cooling pipe is arranged outside the heating resistance card, so that the working state of the heating resistance card can be preferentially ensured, and the efficiency of the cooling pipe is considered; the singleness and the untimely property of only depending on the temperature adjustment of the heating resistor disc are made up; through temperature measuring device and controlling means, can set up corresponding temperature range in the memory in advance, through the accurate temperature that measures the pipe of temperature measuring device, heating power and the cooling power of cooling tube through comparator and the accurate adjustment control heating resistance card of controller, influence the temperature of the inside glass fuse-element of pipe through heat-conduction, can be more direct, reliable, accurate carry out temperature control to the glass fuse-element, the inside glass fuse-element temperature of control pipe, reach higher control by temperature change precision, thereby high-level overflow quality has been guaranteed.
Furthermore, the heating resistor disc is arc-shaped, the arc-shaped heating resistor disc is arranged on the outer side of the circumferential direction of the guide pipe in a blocking mode, and the number of blocks is not less than two and not more than ten. The flow rate of the glass melt at different positions of the conduit is controlled by uneven heating of the conduit circumferentially outward.
Further, the cooling tube is the coiled pipe, and tangent setting forms the arc tube panel between the adjacent coiled pipe, and a plurality of arc tube panels circumference sets up in the outside of heating resistor piece, and two and no longer than ten are no less than to the quantity of arc tube panel. The flow rate of the glass melt at different positions of the guide tube is controlled by uneven cooling on the circumferential outer side of the heating resistor disc.
Furthermore, the number of the segments of the tube panel arc-shaped sheet is equal to that of the segments of the heating resistor sheet, and the bending radians of the arc-shaped segments of the tube panel arc-shaped sheet and the arc-shaped segments of the heating resistor sheet are equal. The temperature of the glass melt at different positions of the guide pipe can be conveniently controlled.
Furthermore, the temperature measuring devices are arranged on the outer surface of the conduit in the circumferential direction, and the number of the temperature measuring devices is not less than the number of the blocks of the heating resistor discs. The temperature of the conduit is measured by a plurality of temperature measuring devices, and the accuracy of the temperature control of the conduit is ensured.
Furthermore, a flow meter, a flow regulating valve and a temperature detection device are arranged at the inlet of the cooling pipe. The cooling power of the cooling pipe is accurately controlled by arranging the flowmeter, the flow regulating valve and the temperature detection device.
Furthermore, the outer circumference of the guide pipe is provided with a heat preservation layer, and the temperature measuring device, the heating resistance sheet and the cooling pipe are all arranged in the heat preservation layer. The influence of the external temperature on the temperature control of the guide pipe is reduced by arranging the heat insulation layer, and interference factors are reduced.
Further, the cooling medium circulating in the cooling pipe is compressed air. The problem that the cooling capacity of other cooling media is too strong and great influence is caused on the conduit is avoided, and the air flow rate is convenient to control.
Furthermore, the temperature measuring device is fixed on the outer surface of the guide pipe in a thermocouple welding mode. The welding can guarantee that temperature measuring device and pipe are closely laminated, has guaranteed measured data's accuracy.
Drawings
FIG. 1 is a schematic view of a conventional conduit glass melt heating configuration;
FIG. 2 is a schematic view of the temperature adjustment device of the present invention;
FIG. 3 is a schematic view of the flow of the glass melt according to the present invention;
FIG. 4 is a front view of the temperature control device of the present invention;
FIG. 5 is a top view of the temperature control device of the present invention;
FIG. 6 is a control structure diagram of the temperature adjustment device of the present invention;
in the figure: 11 is a feeding pipe; 12 is a conduit; 13 is an isostatic pressing tube; 14 is substrate glass; 15 is a heat-insulating layer; 16 is a heating resistor disc; and 17 is a cooling pipe.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.
As shown in fig. 2, the temperature adjusting device for glass melt of the present invention comprises a temperature measuring device, a control device, a heating resistor 16 and a cooling tube 17; the heating resistor disc 16 is circumferentially arranged outside the guide pipe 12; the cooling pipe 17 is circumferentially arranged outside the heating resistor disc 16; the cooling pipe 17 is communicated with the outside, and a cooling medium flows through the cooling pipe 17; a temperature measuring device is arranged between the guide pipe 12 and the heating resistor disc 16 and is arranged on the outer surface of the guide pipe 12;
the control device comprises a controller, a comparator and a memory with a built-in comparison value; the comparator is in data connection with the data memory; the temperature measuring device is connected with the input end of the signal converter, the output end of the signal converter is connected with the input end of the comparator, the output end of the comparator is connected with the input end of the controller, and the output end of the controller is respectively connected with the heating resistor disc 16 and the cooling pipe 17.
According to the device, the cooling pipe 17 is arranged on the outer side of the heating resistor disc 16, and the cooling pipe 17 is arranged on the outer side of the heating resistor disc 16, so that the working state of the heating resistor disc 16 can be preferentially ensured, and the efficiency of the cooling pipe 17 is considered; the temperature control device makes up the singleness and the untimely property of only depending on the temperature adjustment of the heating resistance card 16, can more directly, reliably and accurately control the temperature of the glass melt, controls the temperature of the glass melt in the guide pipe and achieves higher temperature control precision. Thereby ensuring a high level of overflow quality. Through temperature measuring device and controlling means, can set up corresponding temperature range in the memory in advance, through the temperature of the accurate pipe of measuring of temperature measuring device, through the heating power of comparator and the accurate adjustment control heating resistance card 16 of controller and the cooling power of cooling tube 17, through the temperature of the inside glass fuse-element of heat-conduction influence pipe 12, and then reach accurate control glass fuse-element temperature to obtain better overflow quality.
The overflow downdraw process, the fusion downdraw process, is one method of producing glass sheets in the glass manufacturing art. The overflow downdraw method produces a glass sheet having a surface with excellent flatness and smoothness, compared to other processes, such as the float process and the slot draw process, without using a secondary forming process such as grinding, polishing, and the like.
In an exemplary fusion downdraw process, glass raw materials are charged into a furnace for melting, from which glass raw materials are melted into a glass melt, which is conveyed through conduit 12 to a supply tube 11, which supplies a trough formed in a refractory isopipe 13. The molten glass overflows the top of the trough on either side of the isopipe 13 to form two glass sheets which flow downward and then down the outer surface of the isopipe 13. The two sheets meet at the bottom or root of the isopipe 13 where they fuse together to form a single glass sheet. During the downdraw process, the outer, outward-facing surface of the final glass sheet will not contact the outer surface of the overflow. Rather, these surfaces are only exposed to the atmosphere. The inner surfaces of the two half sheets forming the final sheet do contact the overflow, these inner surfaces are fused at the root of the overflow and then embedded within the body of the final sheet, and a final sheet is obtained with excellent outer surface properties. And in the process of downward movement of the semi-solidified glass melt, controlling the cooling speed in the forming equipment, and finally producing glass plates with various good quality parameters. In the production process, the melting furnace is used for melting glass raw materials which are proportioned according to requirements and carrying out certain treatment on the glass melt; conduit 12 functions to convey the glass melt while further processing; the main function of the isostatic pressing pipe 13 is to provide a good attachment for overflowing glass melt, so as to achieve the function of controlling the overflow quality; the forming equipment mainly has the function of controlling a reasonable cooling speed and ensuring that the glass plate has qualified parameters such as flatness, internal stress and the like.
And for the formed continuous glass plate, the temperature reduction speed of the forming equipment is controlled, quality parameters such as the flatness of the whole glass plate, internal stress and the like are controlled, and the continuous whole glass plate is cut and the like under the condition that the temperature is reduced to a reasonable temperature, so that the glass plate meeting the standard specification is produced and is correspondingly processed.
After a plurality of tests and flow field simulations, the glass melt flowing in the guide pipe 12 has a corresponding relationship with the weir part of the isostatic pressing pipe 13, namely the glass melt in the length direction, namely: the glass melt at each location of the cross-sectional area necessarily flows to the same area of the isopipe 13, outwardly, corresponding to different locations of the cross-section of the pipe 12. As shown in fig. 3, fig. 3 is only a schematic view and does not show the specific correspondence of the duct 12 cross-section to the isopipe 13.
Examples
A temperature regulating device of glass melt comprises a thermocouple, a control device, a heating resistor disc 16 and a cooling pipe 17;
as shown in fig. 4 and 5, the heating resistor pieces 16 are arc-shaped, and the arc-shaped heating resistor pieces are unevenly arranged in blocks on the outer side of the circumferential direction of the guide tube 12, and the number of the blocks is not less than two and not more than ten. The cooling tube 17 is the coiled pipe, and tangent setting forms the tube panel between the adjacent coiled pipe, and tube panel circumference sets up in the 16 outsides of heating resistor card, and the tube panel is the uneven pipe screen arc piece of dividing into along pipe 12 circumference, and the coiled pipe interval between the adjacent tube screen arc piece sets up, and two and no longer than ten are no less than to the quantity of tube panel arc piece. The number of the sub-pieces of the tube panel arc-shaped piece is equal to the number of the sub-pieces of the heating resistor piece 16, and the bending radians of the arc-shaped sub-pieces of the tube panel arc-shaped piece and the arc-shaped sub-pieces of the heating resistor piece 16 are equal. The cooling pipe is communicated with the outside, and compressed air flows through the cooling pipe; the inlet of the cooling pipe 17 is provided with a flow meter, a flow regulating valve and a temperature detecting device. A plurality of temperature thermocouples are arranged between the guide pipe 12 and the heating resistor disc 16 and are welded and fixed on the outer surface of the guide pipe 12; the number of the temperature thermocouples is not less than the block number of the heating resistor pieces 16. An insulating layer 15 is circumferentially arranged outside the guide pipe 12, and the temperature measuring device, the heating resistance sheet 16 and the cooling pipe 17 are all arranged in the insulating layer 15.
As shown in fig. 6, the control device includes a controller, a comparator, and a memory in which a comparison value is built; the comparator is in data connection with the data memory; the temperature measuring device is connected with the input end of the signal converter, the output end of the signal converter is connected with the input end of the comparator, the output end of the comparator is connected with the input end of the controller, and the output end of the controller is respectively connected with the heating resistor disc 16 and the cooling pipe 17.
By circumferentially and unevenly controlling the temperature of the guide pipe 12, the control device independently controls the temperature of each block of the heating resistor disc 16 and the cooling pipe 17, so that the temperature and the flow rate of the glass melt at different positions are different, and the glass melt is ensured to reach the corresponding position of the overflow groove. By means of this device for regulating the temperature of the glass melt, it is possible to provide a certain temperature regulating capability to a greater extent to the glass melt in the corresponding portion of the conduit 12, thereby ensuring a high level of overflow quality.
In the process of producing liquid crystal plate glass by using an overflow down-draw method, glass raw materials are melted into glass melt in a melting furnace, the glass melt downwards enters a groove of an isostatic pressing pipe 13 through the control of a guide pipe 12 and a feed pipe 11, the glass melt reaches equal outward outflow pressure at overflow weirs at two sides of an overflow groove after the action of the isostatic pressing pipe 13, the glass melt downwards flows along outer walls at two sides of the isostatic pressing pipe 13 and is converged at the bottom of the isostatic pressing pipe 13 to downwards flow, and the requirement of producing high-quality liquid crystal plate glass is met. By adding a temperature adjusting device in the circumferential direction of the guide pipe 12, a cooling pipe 17 is provided outside the heating resistor 16, and the temperature of the glass melt inside the guide pipe 12 is controlled by adjusting the heating resistor 16 and the cooling pipe 17 in combination. The temperature of the glass melt is more uniform, a better overflow effect is achieved, and high-quality liquid crystal plate glass is easier to produce.
Because the thermocouples for measuring the temperature are arranged at different positions of the guide pipe 12, the temperature of the guide pipe 12 is accurately measured by the thermocouples of the temperature measuring device, and the temperature accuracy information of the molten glass in the guide pipe 12 can be basically and accurately obtained by means of computer simulation, experiments, field data collection and the like. The heating power of the heating resistance chip 16 and the temperature, the flow and other parameters of the cooling medium in the cooling pipe 17 are accurately adjusted and controlled through a computer, the temperature of the glass liquid in the guide pipe is influenced through heat conduction, and then the temperature of the glass liquid is accurately controlled, so that better overflow quality is obtained. The control part of the cooling pipe 17 such as a flow control switch is installed outside the whole apparatus, so that poor control caused by high temperature can be avoided.
By adding the whole set of device, and combining field data collection and computer simulation analysis, the fine target of field temperature control can be ensured. More accurate and more stable overflow quality is achieved, and therefore better substrate glass is obtained.
Claims (10)
1. The glass melt temperature regulating device is characterized by comprising a temperature measuring device, a control device, a heating resistor disc (16) and a cooling pipe (17);
the heating resistor disc (16) is circumferentially arranged outside the guide pipe (12); the cooling pipe (17) is circumferentially arranged outside the heating resistor disc (16); the inlet and outlet of the cooling pipe (17) are communicated with the outside, and a cooling medium flows through the cooling pipe (17);
a temperature measuring device is arranged between the guide pipe (12) and the heating resistor disc (16), and the temperature measuring device is arranged on the outer surface of the guide pipe (12);
the control device comprises a controller, a comparator and a memory with a built-in comparison value; the comparator is in data connection with a memory;
the temperature measuring device is connected with the input end of the signal converter, the output end of the signal converter is connected with the input end of the comparator, the output end of the comparator is connected with the input end of the controller, and the control end of the controller respectively controls the heating power of the heating resistor disc (16) and the flow of the cooling medium in the cooling pipe (17) to control the temperature of the glass melt.
2. A glass melt temperature regulating apparatus according to claim 1, wherein the heating resistor disc (16) has an arc shape, and the arc-shaped heating resistor disc is unevenly divided in blocks outside the circumferential direction of the guide pipe (12), and the number of the blocks is not less than two and not more than ten.
3. A glass melt temperature regulating apparatus according to claim 2, wherein the cooling pipe (17) is a serpentine pipe, adjacent serpentine pipes are arranged tangentially to form an arc-shaped pipe panel, and a plurality of arc-shaped pipe panels are circumferentially arranged outside the heating resistor sheet (16), and the number of the arc-shaped pipe panels is not less than two and not more than ten.
4. A glass melt temperature regulating apparatus according to claim 3, wherein the number of segments of the arc-shaped tube panel is equal to the number of segments of the heating resistor (16), and the arc-shaped tube panel and the heating resistor (16) have the same bending radian at the corresponding positions of the arc-shaped segments.
5. A glass melt temperature regulating apparatus according to claim 1, wherein the temperature measuring means is provided in plurality circumferentially on the outer surface of the conduit (12), and the number of the temperature measuring means is not less than the number of the divided pieces of the heating resistor disc (16).
6. A glass melt temperature regulating apparatus according to claim 1, wherein a flow meter, a flow regulating valve and a temperature detecting device are provided at a cooling pipe inlet of the cooling pipe (17).
7. A glass melt temperature regulating apparatus according to claim 1, wherein an insulating layer (15) is provided circumferentially outside the guide pipe (12), and the temperature measuring means, the heating resistor disc (16) and the cooling pipe (17) are provided in the insulating layer (15).
8. A glass melt temperature regulating apparatus according to claim 1, wherein the cooling medium circulating in the cooling pipe (17) is compressed air.
9. A glass melt temperature regulating apparatus as in claim 1, wherein the temperature measuring device is a thermocouple.
10. A glass melt temperature regulating apparatus according to claim 9, wherein the temperature measuring device is thermocouple welded to the outer surface of the conduit (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021264318.8U CN212954845U (en) | 2020-07-01 | 2020-07-01 | Temperature regulating device for glass melt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021264318.8U CN212954845U (en) | 2020-07-01 | 2020-07-01 | Temperature regulating device for glass melt |
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| Publication Number | Publication Date |
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| CN212954845U true CN212954845U (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021264318.8U Active CN212954845U (en) | 2020-07-01 | 2020-07-01 | Temperature regulating device for glass melt |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112306121A (en) * | 2020-10-15 | 2021-02-02 | 凯盛君恒有限公司 | Glass tube cutting temperature control system and method |
| CN117492490A (en) * | 2023-12-29 | 2024-02-02 | 山东兴诺工贸股份有限公司 | Intelligent temperature control system for glass processing based on data analysis |
-
2020
- 2020-07-01 CN CN202021264318.8U patent/CN212954845U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112306121A (en) * | 2020-10-15 | 2021-02-02 | 凯盛君恒有限公司 | Glass tube cutting temperature control system and method |
| CN117492490A (en) * | 2023-12-29 | 2024-02-02 | 山东兴诺工贸股份有限公司 | Intelligent temperature control system for glass processing based on data analysis |
| CN117492490B (en) * | 2023-12-29 | 2024-04-16 | 山东兴诺工贸股份有限公司 | Intelligent temperature control system for glass processing based on data analysis |
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