CN202643545U - Liquid nitrogen quenching air grid for thin glass hot tempering production - Google Patents
Liquid nitrogen quenching air grid for thin glass hot tempering production Download PDFInfo
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- CN202643545U CN202643545U CN2012202670606U CN201220267060U CN202643545U CN 202643545 U CN202643545 U CN 202643545U CN 2012202670606 U CN2012202670606 U CN 2012202670606U CN 201220267060 U CN201220267060 U CN 201220267060U CN 202643545 U CN202643545 U CN 202643545U
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- liquid nitrogen
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- thin glass
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Abstract
Provided is a liquid nitrogen quenching air grid for thin glass hot tempering production. The liquid nitrogen quenching air grid for thin glass hot tempering production is especially applicable to hot tempering of thin glass with thickness to be 2-3mm and uses liquid nitrogen as the cold source. The liquid nitrogen quenching air grid is formed by two oppositely arranged parts with the same structure, and each part of the air grid is mainly composed of an air grid casing good in heat preservation, a liquid nitrogen input control valve, a liquid nitrogen gasifying/atomizing device, a high-pressure air input control valve and a quenching air nozzle. Compared with the exiting generally used fan air grid, the liquid nitrogen quenching air grid using liquid nitrogen as the cold source can greatly improve quenching rate of hot glass, increase permanent residual stress in the glass, lead bending strength of the thin glass with thickness to be 2-3mm to reach 4-8 times that of the original glass and improve impact strength of the thin glass with thickness to be 2-3mm by 5-10 times, and the fragment state meets technical standard requirements.
Description
Technical field
The present invention relates to the quenching air grid of thin glass heat tempering production usefulness, is the thin glass heat tempering quenching air grid that use, take liquid nitrogen as low-temperature receiver of 2mm～3mm especially for thickness.
Background technology
Carry out quenching after the glass heats and process, make glass surface produce permanent residual compressive stress, can significantly improve intensity, the anti-rapid heat cycle of glass and reduce its nocuity.This glass is called hot toughened glass (tempered glass), and its production method is called the hot tempering (thermal-tempering) of glass.
High-tech products such as fast-developing solar cell, light-emitting diode display panel are in recent years all wished the hot toughened glass of employing thickness 2～3mm; Building energy conservation double glazing, vacuum glass etc. also thirst for adopting the glass about 3mm to reduce the weight of using glass, and realization economizes on resources, the target of the energy.And present industrialization toughened glass production all is the quenching air grid that adopts the blower fan air feed with air grid, mostly can only produce 4mm～19mm glass, be difficult to tempering thickness 3mm glass, more can't satisfy and produce thickness less than the requirement of the required rate of cooling of the hot toughened glass of 3mm.Because glass is thinner, needed rate of cooling must be higher, just can reach required toughening degree, namely forms necessary permanent unrelieved stress in glass, guarantees the performances such as intensity, anti-rapid heat cycle and fragment state of toughened glass.In recent years, some patented technologies that improve speed of cooling are disclosed successively.For example, 1) by improving air grid, improve the patent that blast increases speed of cooling, be the patent such as 200620072383,200810156023,200810156025,201020285038 and 02118592 such as application number; 2) liquid such as water or silicone oil is the patent of heat-eliminating medium, is the patent such as 201110116462,92100022.7,200810150826 and 03817018 such as application number; 3) with the patent of high heat conduction solid cooling medium, be the patents such as 200610064917,95102791,200510018007 such as application number.These inventions respectively have characteristics, but well do not solve the thin glass chilling problem that is heated to the tempering temperature.For example, improve blast and increase rate of cooling, fan energy consumption is very high and easily make glass deformation; Liquid cooling easily pollutes glass surface and equipment is complicated; With the solid dielectric chilling more be difficult for reaching well, uniform fast cold purpose.
The boiling point of liquid nitrogen is 77.35K (196 ℃), and the heat of gasification under the boiling point is 202.76kJ/kg, and the per kilogram liquid nitrogen is annoying to change into 794 liters of low temperature nitrogens.The level pressure thermal capacitance C of nitrogen
P25 ℃=1.038kJ/ (kgk).A nitrogen content is about 78.5% in the air, and resource is very abundant, to environment without any harm.Liquid nitrogen is the byproduct of industrial oxygenerating, has ample resources to utilize.High as cryogenic refrigeration low-temperature receiver cost performance, it is very outstanding chilling low-temperature receiver, except a large amount of uses of the high-tech areas such as superconduction, biotechnology, pharmacy, aerospace, use in a large number at aspects such as food refrigerated transportation, the storage of fruit and vegetable using controlled atmosphere, mechanical workout and Metal smelting quenchings.But up to now, also do not use liquid nitrogen to be the precedent of glass tempering low-temperature receiver in the glass tempering field, do not see liquid nitrogen quenching air grid patent and technology report yet.
Summary of the invention
The purpose of this utility model provides a kind of quenching air grid for the thin glass heat tempering of thickness 2mm～3mm production usefulness.Technological line of the present utility model is that to adopt liquid nitrogen be low-temperature receiver, utilizes the very low temperature gas that gasification/atomizing produces of liquid nitrogen, spray at a high speed hot glass rapidly quenching be the target design air grid.Liquid nitrogen quenching air grid has higher rate of cooling than present blower fan air grid, can form enough permanent unrelieved stresss in thin glass, guarantees that thin glass has satisfied intensity, anti-rapid heat cycle and fragment state.
Particular content of the present utility model is:
(1) air grid that liquid nitrogen quenching air grid is identical by two chip architectures, direction is relative forms, and is moved on the central plane of the hot glass of quenching between the two.Every liquid nitrogen quenching air grid mainly is comprised of good air grid housing, liquid nitrogen input control valve, liquid nitrogen gasification/atomisation unit, high-pressure air input control valve and several parts of very low temperature quenching nozzle of insulation.
(2) that the air grid insulation shell is installed is inner for liquid nitrogen gasification/atomisation unit, with liquid nitrogen input control valve pipeline communication, liquid nitrogen in thermal-insulating body, gasify/be atomized into contain or do not contain the liquid nitrogen particulate very low temperature gas.
(3) at liquid nitrogen quenching air grid on the plane of glass, be equipped with in a large number with the quenching gas jets of arranged, very low temperature quenching nozzle is made according to civilian Qiu Shi principle, it is comprised of high-pressure air nozzle and quenching gas jet.The high-pressure air nozzle is connected with the high-pressure air control valve.From the high-pressure air through cooling of contraction/distension shape high-pressure air nozzle ejection, sweep along the very low temperature gas of a large amount of liquid nitrogen gasifications/be atomized into, spray to hot glass from the quenching gas jet, finish the rapidly quenching of glass.
The invention has the beneficial effects as follows:
Use liquid nitrogen to compare with the blower fan air grid that generally uses at present as the liquid nitrogen quenching air grid of low-temperature receiver, can greatly improve the Quenching Rate of hot glass, increase the permanent unrelieved stress in the glass, make the bending strength of the thin tempering glass of 2mm～3mm can reach 4～8 times of former sheet glass, resistance to impact shock and improve 5～10 times, the fragment state satisfies the technological standard requirement.
Description of drawings
Embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
Liquid nitrogen quenching air grid of the present utility model is made of upper and lower two the identical liquid nitrogen quenching of structure air grids.Entered/exported and swung by glass conveying roller (1) support, driving on the central plane of the hot glass of quenching (2) between the two.Upper and lower two liquid nitrogen quenching wind all are comprised of liquid nitrogen quenching air grid insulation shell (5), liquid nitrogen gasification/atomisation unit (7) high-pressure air nozzle (4) quenching gas jet (3), liquid nitrogen input control valve (8) and high-pressure air input control valve (9).
Liquid nitrogen gasification/atomisation unit (7) is installed in the inside of liquid nitrogen quenching air grid insulation shell (5).Liquid nitrogen gasification/atomisation unit (7) gasifies the liquid nitrogen that comes to liquid nitrogen input control valve (8)/be atomized into and contains or do not contain-196 ℃～-100 ℃ the very low temperature gas (6) of liquid nitrogen mist pearl.
Liquid nitrogen quenching air grid is equipped with the nitrogen ultra low temperature quenching gas jet of arranging with matrix-style in a large number towards by the hot glass of quenching (2) part, guarantees can evenly to be cooled off by the hot glass of quenching (2).Liquid nitrogen cryogenics gas quenching nozzle according to civilian Qiu Shi principle design, have high-pressure air nozzle (4) quenching gas gas jet (3) to form.
Instruction according to the glass toughening production line center-controlling computer, when glass conveying roller (1) is sent into liquid nitrogen quenching air grid to glass (2), the liquid nitrogen input control valve (8) of two portions liquid nitrogen quenching air grid is opened simultaneously up and down, liquid nitrogen gasification/atomisation unit (7) is the liquid nitrogen that comes to liquid nitrogen input control valve (8), the very low temperature gas (6) that gasifies/be atomized into and contain or do not contain liquid nitrogen mist pearl.Subsequently, high-pressure air input control valve (9) is opened simultaneously, high-pressure air through cooling sprays at a high speed from high-pressure air nozzle (4), sweeping along liquid nitrogen quenching air grid insulation shell (5) very low temperature gas (6) inner, that formed by liquid nitrogen gasification/atomizing, spray to by the hot glass of quenching (2) at a high speed from quenching gas gas jet (3), make by quenching rapidly of two-sided while of the hot glass of quenching (2), realize the glass heat tempering.
Liquid nitrogen input control valve (8) is inputted a certain amount of liquid nitrogen according to the instruction of glass toughening production line center-controlling computer, the requirement of producing to adapt to the thin glass tempering of different size.
High-pressure air input control valve (9) is according to the instruction of glass toughening production line center-controlling computer, and pressure, flow and the time etc. of control high-pressure air are to adapt to the requirement of the thin glass tempering production of different size.
In the ejection During Quenching, the glass conveying roller swings back and forth glass, and the frame that liquid nitrogen quenching air grid is installed can drive liquid nitrogen quenching air grid and swing back and forth perpendicular to glass direction of motion, thus guarantee hot glass each several part evenly, hastily cooling.
Claims (3)
1. a thin glass heat tempering production is with liquid nitrogen quenching air grid, it is characterized in that: liquid nitrogen quenching air grid is made of relative installation, two portions air grid that structure is identical, moved between the two by quenched glass, every part air grid mainly is comprised of air grid insulation shell, liquid nitrogen input control valve, liquid nitrogen gasification/atomisation unit, high-pressure air input control valve, several parts of quenching gas jet.
2. thin glass heat tempering production according to claim 1 is with liquid nitrogen quenching air grid, it is characterized in that: it is inner that liquid nitrogen gasification/atomisation unit is installed in the air grid insulation shell, with liquid nitrogen input control valve pipeline communication, in the air grid insulation shell liquid nitrogen gasification/the be atomized into very low temperature quenching gas that contains or do not contain the liquid nitrogen particulate.
3. thin glass heat tempering production according to claim 1 is with liquid nitrogen quenching air grid, it is characterized in that: at liquid nitrogen quenching air grid on the plane of glass direction, quenching gas jet with arranged is installed, nozzle is connected with the high-pressure air control valve, the high-pressure air through cooling from the ejection of the high-pressure air nozzle of contraction/distension shape, sweep along the very low temperature gas by liquid nitrogen gasification/be atomized into to spray to hot glass, finish the rapidly quenching of hot glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202670606U CN202643545U (en) | 2012-06-08 | 2012-06-08 | Liquid nitrogen quenching air grid for thin glass hot tempering production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202670606U CN202643545U (en) | 2012-06-08 | 2012-06-08 | Liquid nitrogen quenching air grid for thin glass hot tempering production |
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| CN202643545U true CN202643545U (en) | 2013-01-02 |
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| CN2012202670606U Expired - Fee Related CN202643545U (en) | 2012-06-08 | 2012-06-08 | Liquid nitrogen quenching air grid for thin glass hot tempering production |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896482A (en) * | 2014-04-11 | 2014-07-02 | 洛阳兰迪玻璃机器股份有限公司 | Flat glass toughening method and device |
| CN104973757A (en) * | 2014-04-11 | 2015-10-14 | 洛阳兰迪玻璃机器股份有限公司 | Flat glass tempering apparatus |
| CN106365423A (en) * | 2016-11-02 | 2017-02-01 | 佛山市顺德区晟阳机械有限公司 | Wind grating system capable of combining liquid cooling and air cooling, and glass tempering furnace provided with wind grating system |
| CN108002697A (en) * | 2017-11-30 | 2018-05-08 | 长飞光纤光缆股份有限公司 | A kind of spray type cooling device and method of optical fiber on-line cooling |
| CN111825318A (en) * | 2020-07-21 | 2020-10-27 | 淄博宜臣轻工制品有限公司 | Fast cold charge is used in high strength glass preparation |
-
2012
- 2012-06-08 CN CN2012202670606U patent/CN202643545U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896482A (en) * | 2014-04-11 | 2014-07-02 | 洛阳兰迪玻璃机器股份有限公司 | Flat glass toughening method and device |
| CN104973757A (en) * | 2014-04-11 | 2015-10-14 | 洛阳兰迪玻璃机器股份有限公司 | Flat glass tempering apparatus |
| CN103896482B (en) * | 2014-04-11 | 2017-07-25 | 洛阳兰迪玻璃机器股份有限公司 | Flat glass toughening method and device |
| CN106365423A (en) * | 2016-11-02 | 2017-02-01 | 佛山市顺德区晟阳机械有限公司 | Wind grating system capable of combining liquid cooling and air cooling, and glass tempering furnace provided with wind grating system |
| CN106365423B (en) * | 2016-11-02 | 2019-03-26 | 佛山市顺德区晟阳机械有限公司 | The air grid system of the air-cooled combination of liquid cooling and the glass tempering furnace for being provided with the system |
| CN108002697A (en) * | 2017-11-30 | 2018-05-08 | 长飞光纤光缆股份有限公司 | A kind of spray type cooling device and method of optical fiber on-line cooling |
| CN108002697B (en) * | 2017-11-30 | 2020-04-14 | 长飞光纤光缆股份有限公司 | Spray type cooling device and method for online cooling of optical fiber |
| CN111825318A (en) * | 2020-07-21 | 2020-10-27 | 淄博宜臣轻工制品有限公司 | Fast cold charge is used in high strength glass preparation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150608 |
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| EXPY | Termination of patent right or utility model |