Method for producing anti-reflection coating of cover glass pipe of solar high-temperature heat collecting pipe and production line

A cover glass tube and production method technology, which is applied in the field of high-temperature solar collector tube manufacturing, can solve the problems of long-term pollution resistance, friction resistance, aging resistance, low degree of automation, and low film adhesion, and achieve good consistency and high efficiency. Competitive value, effect of solar transmittance improvement

Inactive Publication Date: 2012-06-13
SHANDONG LINUO NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing sol-gel production line has a low degree of automation and is only suitable for flat glass; while the plasma spraying method has low film adhesion and cannot be resistant to pollution

Method used

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  • Method for producing anti-reflection coating of cover glass pipe of solar high-temperature heat collecting pipe and production line
  • Method for producing anti-reflection coating of cover glass pipe of solar high-temperature heat collecting pipe and production line
  • Method for producing anti-reflection coating of cover glass pipe of solar high-temperature heat collecting pipe and production line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] According to the volume ratio of sol solution TEOS:EtOH:H 2 O: HCl solution = 1: 2: 0.2: 0.02 The preparation of sol C is marked as component 1, and the anti-reflection coating of the glass tube of the high-temperature heat collection tube cover is plated in the above production line. Under the same other process conditions, the coating is carried out according to different pulling speeds, and the solar transmittance index after coating is used to characterize.

[0092] There is no strict requirement for the amount of absolute ethanol (EtOH) used in solutions A and B, which is equivalent to dividing the absolute ethanol into two parts according to the overall dosage, and each part is enough to evenly dissolve the corresponding components to be dissolved.

[0093] See attached table 1 for the results

[0094] Table 1 Effect of pulling speed on component 1

[0095] 1 2 3 Lifting speed 80mm / min 160mm / min 300mm / min AR Solar Transmittance 94....

Embodiment 2

[0098] According to the volume ratio of the sol solution TEOS:EtOH:H2O:HCl solution=1:5:0.2:0.02, the preparation of the sol solution C is marked as component 2, and the anti-reflection coating layer of the high-temperature heat collector tube cover glass tube is coated on this production line . Under the same other process conditions, the coating is carried out according to different pulling speeds, and the solar transmittance index after coating is used to characterize. See attached table 2 for the results

[0099] Table 2 Effect of pulling speed on component 2

[0100] 1 2 3 Lifting speed 80mm / min 160mm / min 300mm / min AR Solar Transmittance 94.6 94.4 94.0 Substrate solar transmittance 90.5 90.5 90.5 increase value 4.1 3.9 3.5

[0101] It can be seen from Table 2 that the coating effect is better when the pulling speed of component 2 is 80 mm / min, and the solar transmittance is increased by 4.1 percentage points relative ...

Embodiment 3

[0104] Preferably, for component 1, adjust the amount of water and acid, TEOS:ETOH:H2O:HCL=1:5:1:0.15 to get component 3. The solar transmittance increase value is basically close. From the perspective of production cost, the life of the sol solution is an important indicator. The service life of the sol is shown in Table 3

[0105] Table 3. Comparison of service life of sol

[0106] components service life component 1 57 days Component 3 103 days

[0107] The preferred component 1 has a longer service life. Because the water content of component 3 is relatively high, it has reached the stoichiometric point of the sol reaction, so the reaction is violent and the life span is short. At the same time, the addition of acid acts as a catalyst for the reaction, and the amount is directly related to the length of life. Therefore, the preferred optimal formula is component 1 TEOS:ETOH:H2O:HCL=1:2:0.2:0.02. This formula has relatively high solar tran...

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Abstract

The invention discloses a method for producing an anti-reflection coating of a cover glass pipe of a solar high-temperature heat collecting pipe and a production line. The method comprises the following steps of: preparing sol liquid; aging; cleaning, and drying; coating a film; drying; sintering; and cooling. The production line comprises a rail, a self-propelled trolley, a sol tank, a drying device, a sintering furnace, a lifting device and a control device, wherein the rail is provided with an assembly station; the sol tank, the drying device and the sintering furnace are arranged sequentially along the rail with the assembly station at an initial position and are provided with temperature control devices; and the control device is used for controlling the self-propelled trolley to run along the rail and move among the assembly station, the sol tank, the drying device and the sintering furnace. According to the method, the quality of the product is stable, and a solar transmittance ratio of the coating is high.

Description

technical field [0001] The invention relates to a production method and a production line of an antireflection coating for a solar high-temperature heat collection tube cover glass tube, and belongs to the technical field of high-temperature solar heat collection tube manufacturing. Background technique [0002] Standards and textbooks have uniformly classified solar collectors. For example, the "Solar Practical Technology Series" published by my country Chemical Industry Press in 2006 stipulates that according to the different working temperatures of collectors, they can be divided into low-temperature collectors below 100°C. Heat collectors, medium-temperature heat collectors at 100-200°C, and high-temperature heat collectors above 200°C, this application belongs to the high-temperature application field of solar energy, that is, the application field of solar energy with an operating temperature above 200°C. At present, the solar transmittance of the cover glass tubes of S...

Claims

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Application Information

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IPC IPC(8): C03C17/23
Inventor 刘希杰杜勇李义凯葛少海房颜辉刘广磊
Owner SHANDONG LINUO NEW MATERIAL
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