CN115108710A - Glass liquid channel heating system and heating method - Google Patents
Glass liquid channel heating system and heating method Download PDFInfo
- Publication number
- CN115108710A CN115108710A CN202210777636.1A CN202210777636A CN115108710A CN 115108710 A CN115108710 A CN 115108710A CN 202210777636 A CN202210777636 A CN 202210777636A CN 115108710 A CN115108710 A CN 115108710A
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- molten glass
- heating
- glass channel
- channel
- shaped
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 188
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011521 glass Substances 0.000 title abstract description 22
- 239000007788 liquid Substances 0.000 title description 21
- 239000006060 molten glass Substances 0.000 claims abstract description 132
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052697 platinum Inorganic materials 0.000 claims abstract description 27
- 238000004321 preservation Methods 0.000 claims abstract description 15
- 238000005452 bending Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000007547 defect Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 claims description 4
- 238000005352 clarification Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000156 glass melt Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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Classifications
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- 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
- C03B7/02—Forehearths, i.e. feeder channels
- C03B7/06—Means for thermal conditioning or controlling the temperature of the glass
- C03B7/07—Electric means
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention relates to a glass melt channel heating system and a glass melt channel heating method, and belongs to the technical field of glass melt heating. The invention relates to a blog glass metal channel, a heat preservation device, a heating device and a detection device; the heat preservation device comprises a plurality of U-shaped heating rods which are arranged at intervals and are uniformly distributed along the axial direction of the molten glass channel, the bent parts of the U-shaped heating rods surround the molten glass channel, and the bending radius of the U-shaped heating rods is larger than the pipe diameter of the molten glass channel; each pair of U-shaped heating rods comprises a first heating rod and a second heating rod with opposite opening directions; each U-shaped heating rod is independently controlled to realize sectional temperature control of the molten glass channel; a thermocouple positioned in the area of the molten glass channel which is not wrapped by the U-shaped heating rod detects and monitors the temperature of the platinum pipeline in real time; the uniform heating of the molten glass channels is realized, and the heating temperature of each section of molten glass channel can be accurately controlled. The invention can be widely applied to the occasions of heating the molten glass.
Description
Technical Field
The invention relates to a glass melt channel heating system and a glass melt channel heating method, and belongs to the technical field of glass melt heating.
Background
In the prior art, the heating method of the molten glass channel is to directly heat by current and to connect the molten glass channel with the current. The glass liquid heating is carried out by directly heating the glass liquid channel, and the following problems can be caused: (1) the current access of the molten glass channel can lead to the acceleration of platinum loss, (2) the current is uneven to lead to uneven heating, (3) the platinum corrosion leads to impure molten glass and other defects.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a glass liquid channel heating system and a heating method, wherein a special U-shaped heating rod is embedded in a glass liquid channel, so that the condition of uneven heating is improved; the U-shaped heating rod is indirectly heated instead of directly heating the molten glass channel, so that the platinum loss speed is reduced, and the purity of the molten glass is improved in a phase-changing manner.
The invention discloses a molten glass channel heating system, which comprises the following components:
the radial section of the molten glass channel is circular, molten glass passes through the inner cavity of the molten glass channel, and the molten glass enters the feeding bin through clarification, cooling, stirring and homogenization;
the heat preservation device is made of a heat preservation structure material and is used for fixing the heating device, fixing the platinum pipeline and preserving heat of the molten glass channel;
the heating device comprises a plurality of U-shaped heating rods which are uniformly distributed at intervals along the axial direction of the molten glass channel, the bent parts of the U-shaped heating rods surround the molten glass channel, and the bending radius of the U-shaped heating rods is larger than the pipe diameter of the molten glass channel; each pair of U-shaped heating rods comprises a first heating rod and a second heating rod with opposite opening directions;
the detection device comprises a plurality of thermocouples which are uniformly distributed at intervals along the axial direction of the molten glass channel, and the thermocouples and the U-shaped heating rods are respectively positioned at two opposite sides of the molten glass channel;
each U-shaped heating rod is independently controlled, so that the temperature of the molten glass channel is controlled in a segmented manner; and a thermocouple positioned in the area of the molten glass channel which is not wrapped by the U-shaped heating rod detects and monitors the temperature of the platinum pipeline in real time.
The heat preservation device, the heating device and the detection device for heating control are additionally arranged outside the molten glass channel, wherein the heat preservation device plays a role in fixing on one hand and provides a heat preservation effect for the heating device on the other hand. The most central is heating device, utilizes the U style of calligraphy heating rod that bilateral symmetry set up, and the back is arranged at the interval, verifies through the experiment, and the glass liquid passageway is heated evenly, and glass liquid passes through the half circle region of first heating rod earlier, continues to contact the half circle region of other second heating rod again forward, in proper order the turn go on. And a detection device is arranged at the center of the opposite surface of the heated half area, and the thermocouple can timely acquire the temperature in the area by utilizing a non-heating area between two adjacent equidirectional first heating rods or two adjacent equidirectional second heating rods.
Preferably, the bending radius of the U-shaped heating rod is 10-80mm larger than the pipe diameter of the molten glass channel. The purpose of U style of calligraphy heating rod is to heating the glass liquid passageway to the glass liquid passageway is with heat uniform transfer for the glass liquid. The problems that the service life is shortened due to the fact that the glass liquid channel is directly heated, the purity is reduced due to the fact that platinum loss enters the glass liquid and the like are solved.
Preferably, the distance between the first heating rod and the second heating rod is 20mm-80 mm. According to data obtained by experiments, the two U-shaped heating rods are set to be 20-80 mm, so that molten glass can be heated at a sufficient temperature, each U-shaped heating rod can be controlled independently, and real-time temperature is controlled.
Preferably, the heat insulation structure material of the heat insulation device adopts heat-resistant bricks with the thickness of 1-2 mm. The heat-insulating structural material is a special heat-resistant brick, which is used outside a molten glass channel with a smaller diameter, is used for heat insulation of the heated molten glass channel, and fixes a U-shaped heating rod outside the molten glass channel.
The heating method of the molten glass channel heating system comprises the following steps:
s1: the first heating rod and the second heating rod are used in pairs and have the same structure, the U-shaped openings are arranged in opposite directions during arrangement, and a plurality of pairs of U-shaped heating rods are uniformly arranged along the direction of the glass liquid channel pipeline;
s2: a thermocouple is arranged in the area of the molten glass channel, which is not wrapped by the U-shaped heating rod, and the center of the U-shaped opening, and is used for monitoring the temperature of the platinum pipeline;
s3: each U-shaped heating rod is independently controlled, and current is introduced into the heating rods for heating.
Compared with the existing method for directly heating the molten glass channel, the method of the invention indirectly heats the U-shaped heating rods, independently controls the temperature of the U-shaped heating rods at certain intervals of the molten glass channel, and feeds back the temperature acquired by the thermocouple, thereby detecting the change of the temperature of the molten glass channel in real time, and ensuring that the heating temperature of the molten glass is controllable and has higher precision.
Preferably, in step S3, the temperature of the molten glass channel is controlled in sections, and the U-shaped heating rod is heated by passing current, so that direct energization of the platinum pipe is avoided, defects such as energization loss of the platinum pipe are reduced, and the service life of the molten glass channel is prolonged.
The U-shaped heating rods can be arranged in a segmented manner, so that the temperature of the molten glass channel can be controlled in a segmented manner; by heating the U-shaped heating rod instead of the molten glass channel, the service life of the molten glass channel can be prolonged, and the energy consumption of the molten glass channel is reduced.
Preferably, in the step S3, the molten glass in the molten glass channel contacts the action of the bent parts of the U-shaped heating rods arranged at regular intervals and flows forward in the axial direction to form a fluid, and the thermocouple at the position of the molten glass channel passing through collects the temperature of the molten glass in real time.
What play the heating effect to the molten glass passageway is the bending part, and the bending part only acts on the semicircle region of molten glass passageway at every turn to avoid the uncontrollable condition of the continuous change of temperature in certain section that current spiral heating caused.
The invention has the beneficial effects that: the heating system and the heating method for the molten glass channel realize uniform heating of the molten glass channel and can realize accurate control of the heating temperature of each section of molten glass channel.
Drawings
FIG. 1 is a radial cross-sectional view of the system of the present invention.
Fig. 2 is a schematic structural view of the first heating rod and the second heating rod.
Fig. 3 is an axial cross-sectional view of the system of the present invention.
Fig. 4 is an axial cross-sectional view of the prior art.
In the figure: 1. a first heating rod; 2. a second heating rod; 3. a thermocouple; 4. a heat preservation structure; 5. and a molten glass channel.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1:
as shown in fig. 1 and 3, the molten glass channel heating system according to the present invention includes the following components:
the radial section of the molten glass channel 5 is circular, molten glass passes through the inner cavity of the molten glass channel 5, and the molten glass enters the feeding bin through clarification, cooling, stirring and homogenization;
the heat preservation device is made of a heat preservation structure 4 material and is used for fixing the heating device, fixing the platinum pipeline and preserving heat of the molten glass channel 5;
the heating device comprises a plurality of U-shaped heating rods which are uniformly distributed at intervals along the axial direction of the molten glass channel 5, the bent parts of the U-shaped heating rods surround the molten glass channel 5, and the bending radius of the U-shaped heating rods is larger than the pipe diameter of the molten glass channel 5; each pair of U-shaped heating rods comprises a first heating rod 1 and a second heating rod 2 with opposite opening directions, as shown in fig. 2.
The detection device comprises a plurality of thermocouples 3 which are arranged at intervals and are uniformly distributed along the axial direction of the molten glass channel 5, and the thermocouples 3 and the U-shaped heating rods are respectively positioned at two opposite sides of the molten glass channel 5;
each U-shaped heating rod is independently controlled to realize the sectional temperature control of the molten glass channel 5; and the thermocouple 3 is positioned in the area of the molten glass channel 5 which is not wrapped by the U-shaped heating rod, and is used for detecting and monitoring the temperature of the platinum pipeline in real time.
The outside of the molten glass channel 5 is additionally provided with a heat preservation device, a heating device and a detection device for heating control, wherein the heat preservation device plays a role in fixing on one hand and provides a heat preservation effect for the heating device on the other hand. Most central is heating device, utilizes the U style of calligraphy heating rod that bilateral symmetry set up, and the back is arranged at the interval, verifies through the experiment, and glass liquid passageway 5 is heated evenly, and glass liquid is first regional through the half circle of first heating rod 1, continues forward again to contact the regional half circle of other second heating rod 2, in proper order in turn goes on. A detection device is arranged at the center of the heating half area, and the thermocouple 3 timely acquires the temperature in the area by utilizing the non-heating area between the two adjacent equidirectional first heating rods 1 or the two adjacent equidirectional second heating rods 2.
Preferably, the bending radius of the U-shaped heating rod is 10-80mm larger than the pipe diameter of the molten glass channel 5. The purpose of the U-shaped heating rod is to heat the molten glass channel 5, so that the molten glass channel 5 uniformly transfers heat to molten glass. The problems that the service life is shortened due to the fact that the glass liquid channel 5 is directly heated, the purity is reduced due to the fact that platinum loss enters the glass liquid, and the like are solved.
Preferably, the distance between the first heating rod 1 and the second heating rod 2 is 20mm-80 mm. According to data obtained by experiments, the two U-shaped heating rods are set to be 20-80 mm, so that molten glass can be heated at a sufficient temperature, each U-shaped heating rod can be controlled independently, and real-time temperature is controlled.
Preferably, the heat insulation structure 4 of the heat insulation device is made of heat-resistant bricks with the thickness of 1-2 mm. The heat insulation structure 4 is made of special heat-resistant bricks, is used outside the molten glass channel 5 with a smaller diameter, is used for heat insulation of the heated molten glass channel 5, and is used for fixing a U-shaped heating rod outside the molten glass channel 5.
Example 2:
the heating method of the molten glass channel heating system comprises the following steps:
s1: the first heating rod 1 and the second heating rod 2 are used in pairs and have the same structure, the U-shaped openings are arranged in opposite directions during arrangement, and a plurality of pairs of U-shaped heating rods are uniformly arranged along the pipeline direction of the molten glass channel 5;
s2: a thermocouple 3 is arranged in the area of the molten glass channel 5 not covered by the U-shaped heating rod and at the center of the U-shaped opening for monitoring the temperature of the platinum pipeline;
s3: each U-shaped heating rod is independently controlled, and current is introduced into the heating rods for heating.
Compared with the existing method for directly heating the molten glass channel 5, the method of the invention indirectly heats the U-shaped heating rods as shown in figure 4, independently controls the temperature of the U-shaped heating rods at certain intervals of the molten glass channel 5, and feeds back the temperature according to the temperature collected by the thermocouple 3, thereby detecting the temperature change of the molten glass channel 5 in real time and ensuring that the heating temperature of the molten glass is controllable and has higher precision.
Preferably, in step S3, the temperature of the molten glass channel 5 is controlled in sections, and the U-shaped heating rod is heated by passing current, so as to avoid direct energization of the platinum pipe, reduce the energization loss of the platinum pipe, and increase the service life of the molten glass channel 5.
The U-shaped heating rods can be arranged in a segmented manner, so that the temperature of the molten glass channel 5 can be controlled in a segmented manner; by heating the U-shaped heating rod instead of the molten glass channel 5, the service life of the molten glass channel 5 can be prolonged, and the energy consumption of the molten glass channel 5 can be reduced.
Preferably, in the step S3, the molten glass in the molten glass channel 5 contacts the action of the bent portions of the U-shaped heating rods arranged at regular intervals and flows forward in the axial direction to form a fluid, and the thermocouple 3 at the molten glass channel 5 through which the molten glass passes collects the temperature of the molten glass in real time.
What plays a heating role to molten glass passageway 5 is the bending part, and the bending part only acts on the semicircle region of molten glass passageway 5 at every turn to avoid the uncontrollable condition of the continuous change of temperature in certain section that current spiral heating caused.
The first heating rod 1 and the second heating rod 2 are used in pairs, the structures in the molten glass channel 5 are completely the same, the U-shaped opening directions are opposite, and a plurality of pairs of heating rods are uniformly distributed along the pipeline direction of the molten glass channel 5. The heat insulation structure 4 is used for fixing the heating rod and the platinum pipeline and plays a role in heat insulation for the glass liquid channel 5. A thermocouple 3 is arranged in the area of the molten glass channel 5 which is not wrapped by the heating rod and in the center of the U-shaped opening, and is used for monitoring the temperature of the platinum pipeline. Every heating rod individual control can realize 5 sectional control temperatures in glass liquid passageway, sets the heating rod to the U style of calligraphy, evenly wraps up the platinum pipeline, can realize that the heating of platinum pipeline is even. Through letting in the heating rod electric current heating, avoid platinum pipeline direct circular telegram, can reduce badness such as platinum pipeline circular telegram loss, increase glass liquid channel 5 life.
The heating system and the heating method for the molten glass channel realize uniform heating of the molten glass channel 5 and can realize accurate control of the heating temperature of each section of molten glass channel 5.
The invention can be widely applied to the occasions of heating the molten glass.
Claims (7)
1. A molten glass channel heating system comprising the following components:
the radial section of the molten glass channel (5) is circular, molten glass passes through the inner cavity of the molten glass channel (5), and the molten glass enters the feeding bin through clarification, cooling, stirring and homogenization;
the heat preservation device is made of a heat preservation structure (4) material and is used for fixing the heating device, fixing the platinum pipeline and preserving heat of the molten glass channel (5);
the heating device comprises a plurality of U-shaped heating rods which are arranged at intervals and are uniformly distributed along the axial direction of the molten glass channel (5), the bent parts of the U-shaped heating rods surround the molten glass channel (5), and the bending radius of the U-shaped heating rods is larger than the pipe diameter of the molten glass channel (5); each pair of U-shaped heating rods comprises a first heating rod (1) and a second heating rod (2) with opposite opening directions;
the detection device comprises a plurality of thermocouples (3) which are arranged at intervals and are uniformly distributed along the axial direction of the molten glass channel (5), wherein the thermocouples (3) and the U-shaped heating rods are respectively positioned at two opposite sides of the molten glass channel (5);
each U-shaped heating rod is independently controlled to realize the sectional control of the temperature of the molten glass channel (5); and the thermocouple (3) is positioned in the area of the molten glass channel (5) which is not wrapped by the U-shaped heating rod, and is used for detecting and monitoring the temperature of the platinum pipeline in real time.
2. The molten glass channel heating system according to claim 1, wherein the bending radius of the U-shaped heating rod is 10-80mm larger than the pipe diameter of the molten glass channel (5).
3. A molten glass channel heating system according to claim 1, wherein the first heating rod (1) and the second heating rod (2) are spaced apart by between 20mm and 80 mm.
4. Molten glass channel heating system according to claim 1, characterized in that the insulating structure (4) of the insulating device is made of heat-resistant bricks with a thickness of 1-2 mm.
5. A heating method based on the molten glass channel heating system according to any one of claims 1 to 4, characterized by comprising the steps of:
s1: the first heating rod (1) and the second heating rod (2) are used in pairs and have the same structure, the U-shaped openings are arranged in opposite directions during arrangement, and a plurality of pairs of U-shaped heating rods are uniformly distributed along the pipeline direction of the molten glass channel (5);
s2: a thermocouple (3) is arranged in the area of the molten glass channel (5) which is not wrapped by the U-shaped heating rod and at the center of the U-shaped opening and is used for monitoring the temperature of the platinum pipeline;
s3: each U-shaped heating rod is independently controlled, and current is introduced into the heating rods for heating.
6. The heating method of the molten glass channel heating system according to claim 5, wherein in step S3, the temperature of the molten glass channel (5) is controlled in a segmented manner, and the U-shaped heating rod is heated by passing current, so that the defects of direct energization of the platinum pipeline, reduction of energization loss of the platinum pipeline and the like are avoided, and the service life of the molten glass channel (5) is prolonged.
7. The heating method of a molten glass channel heating system according to claim 5, wherein in the step S3, the molten glass in the molten glass channel (5) is contacted with the action of the bent portions of the U-shaped heating rods arranged at regular intervals and flows forward in the axial direction to form a fluid, and the thermocouple (3) at the molten glass channel (5) passing by collects the temperature of the molten glass in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210777636.1A CN115108710B (en) | 2022-07-04 | 2022-07-04 | Glass liquid channel heating system and heating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210777636.1A CN115108710B (en) | 2022-07-04 | 2022-07-04 | Glass liquid channel heating system and heating method |
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| Publication Number | Publication Date |
|---|---|
| CN115108710A true CN115108710A (en) | 2022-09-27 |
| CN115108710B CN115108710B (en) | 2024-04-19 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342786A (en) * | 2019-07-08 | 2019-10-18 | 东旭(锦州)精密光电科技有限公司 | Platinum channel |
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- 2022-07-04 CN CN202210777636.1A patent/CN115108710B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342786A (en) * | 2019-07-08 | 2019-10-18 | 东旭(锦州)精密光电科技有限公司 | Platinum channel |
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| Publication number | Publication date |
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| CN115108710B (en) | 2024-04-19 |
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