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Special neutral borosilicate glass tube for medium and high temperature heat collecting tube of solar energy and manufacturing method thereof

A technology of neutral borosilicate glass and medium-high temperature heat collecting tube, which is applied in glass manufacturing equipment, glass forming, vertical pulling of glass liquid, etc., and can solve the production process of neutral borosilicate glass tube that cannot be produced on a large scale Technical difficulty and other issues, to achieve the effect of improving light-to-heat conversion efficiency, good anti-mildew performance, and good water resistance

Active Publication Date: 2018-03-09
沧州四星光热玻璃有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing technology, solve the problem that the neutral borosilicate glass tube used in the existing solar energy medium and high temperature heat collecting tubes is difficult to manufacture and cannot be produced on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The weight ratio of the raw materials used in the neutral borosilicate glass tube of this embodiment is: 75 kg of silicon dioxide, 6.7 kg of aluminum oxide, 9.0 kg of diboron trioxide, 0.8 kg of calcium oxide, 3.5 kg of potassium oxide, and 6.6 kg of sodium oxide. kg, lithium oxide 0.8kg.

[0018] The production method is:

[0019] ⅰ. Raw material preparation: According to the above raw material ratio, mix and prepare the mixed raw materials, use the computer to automatically control the accuracy and mixing uniformity of various raw materials, and transport them to the front of the melting furnace in the glass melting process through conveying machinery;

[0020] ⅱ. Glass melting: through the automatic throwing hand, the prepared batch materials are added to the glass melting furnace according to the specified requirements and procedures. With the method of full electric melting, the molten glass is heated to 1500°C to complete the melting, clarification and homogeniza...

Embodiment 2

[0026] The weight ratio of raw materials used in the neutral borosilicate glass tube of the present embodiment is: silicon dioxide (SiO 2 ) 150kg, aluminum oxide (Al 2 o 3 ) 13kg, boron trioxide (B 2 o 3 ) 20kg, calcium oxide (CaO) 3.0kg, potassium oxide (K 2 O) 10kg, sodium oxide (Na 2 O) 14kg, lithium oxide (LiO) 1.0kg.

[0027] The production method is:

[0028] ⅰ. Raw material preparation: According to the above raw material ratio, mix and prepare the mixed raw materials, use the computer to automatically control the accuracy and mixing uniformity of various raw materials, and transport them to the front of the melting furnace in the glass melting process through conveying machinery;

[0029] ⅱ. Glass melting: through the automatic throwing hand, the prepared batch materials are added to the glass melting furnace according to the specified requirements and procedures. Using the method of full electric melting, the molten glass is heated to 1500°C to complete the mel...

Embodiment 3

[0035] The weight ratio of the raw materials used in the neutral borosilicate glass tube of this embodiment is: silicon dioxide (SiO 2 )74kg, aluminum oxide (Al 2 o 3 )60kg, boron trioxide (B 2 o 3 ) 10kg, calcium oxide (CaO) 1.8kg, potassium oxide (K 2 O) 6.5kg, sodium oxide (Na 2 O) 7.5kg, lithium oxide (LiO) 0.9kg.

[0036] The production method is:

[0037] ⅰ. Raw material preparation: According to the above raw material ratio, mix and prepare the mixed raw materials, use the computer to automatically control the accuracy and mixing uniformity of various raw materials, and transport them to the front of the melting furnace in the glass melting process through conveying machinery;

[0038] ⅱ. Glass melting: through the automatic throwing hand, the prepared batch materials are added to the glass melting furnace according to the specified requirements and procedures. With the method of full electric melting, the molten glass is heated to 1550°C to complete the melting,...

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Abstract

A special neutral borosilicate glass tube for solar energy medium and high temperature heat collection tubes and its manufacturing method, which belongs to the technical field of glass tube products and aims to solve the technical difficulties in the production process of neutral borosilicate glass tubes used in solar medium and high temperature heat collection tubes , the problem of not yet being able to produce on a large scale. The weight ratio of the raw materials used is 71-77.1 parts of silicon dioxide, 5.2-7.1 parts of aluminum oxide, 8.2-11.6 parts of diboron trioxide, 0.5-2.4 parts of calcium oxide, 0.5-7.4 parts of potassium oxide, sodium oxide 5.0-7.6 parts, 0.2-1.0 parts of lithium oxide, the production method includes raw material preparation, glass melting, glass tube forming, precision cutting round mouth, inspection and packaging, and the tube diameter is 71-150mm Neutral borosilicate glass tubes for medium and high temperature solar collector tubes. The manufacturing method is simple and feasible, suitable for large-scale production, and suitable for medium and high temperature heat collecting tubes of solar energy and the like.

Description

technical field [0001] The invention belongs to the technical field of manufacturing glass tube products, and relates to a solar medium-high temperature heat collecting tube and a manufacturing method thereof. Background technique [0002] Solar energy medium and high temperature collector tubes are key components for converting light energy into heat energy. In solar medium and high temperature heat collection systems, glass vacuum heat collector tubes are usually used as receivers. Therefore, with the continuous development and wide application of solar energy, medium and high temperature collector With the industrial development of heat pipes and solar thermal utilization equipment, the technical requirements for medium and high temperature heat collecting glass tubes used in solar collectors are also getting higher and higher. In the known technology, the existing solar vacuum heat collection tubes mainly use high borosilicate glass tubes, taking advantage of its good li...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/091C03B15/14
Inventor 王焕一王晓亮段玉新罗来平陈义梅
Owner 沧州四星光热玻璃有限公司
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