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Straight-through vacuum heat collecting tube and solar air heat collecting system assembled therefrom

A vacuum heat collection tube and solar heat collection technology, which is applied in the field of solar heat collection systems, can solve problems such as poor sealing, large gaps, and large temperature differences, and achieve good sealing and good thermal conductivity.

Active Publication Date: 2018-12-21
FUJIAN MAOSHENG CONSTR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ordinary solar vacuum heat collecting tubes include an outer glass tube and an inner glass tube. Generally, only one end is provided with an opening. The outer wall of the inner glass tube is coated with a coating for improving solar absorption and reducing reflectivity. The temperature difference is relatively large, and it is easy to break the glass tube due to uneven expansion
The end of the vacuum heat collection tube in a general solar heat collection system is cylindrical, and is sealed and plugged into the header through a "silica gel ring", which has poor sealing performance.
Moreover, there must be a large gap between the vacuum heat collecting tubes, which affects the utilization rate of solar energy per unit heat collecting area.

Method used

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  • Straight-through vacuum heat collecting tube and solar air heat collecting system assembled therefrom
  • Straight-through vacuum heat collecting tube and solar air heat collecting system assembled therefrom
  • Straight-through vacuum heat collecting tube and solar air heat collecting system assembled therefrom

Examples

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Effect test

Embodiment 1

[0028] Such as Figure 1-Figure 2 As shown, the straight-through vacuum heat collecting tube of the present invention includes an outer tube 11 and an inner tube 13 located in the outer tube 11, the outer tube 11 and the inner tube 13 are transparent glass tubes; the inner tube 13 is a transparent glass tube at both ends. A straight-through pipe with an opening is provided, and a vacuum chamber 12 is provided between the outer pipe 11 and the inner pipe 13; a metal pipe 14 is arranged inside the inner pipe 12, and a wall for absorbing solar energy is provided on the outer wall of the metal pipe 14. Selective coating 141; Metal wire 16 is arranged between described inner pipe 13 and metal pipe 14, and metal wire 16 can transfer the heat of inner pipe 13 to metal pipe 14; The two ends of described inner pipe 11 and outer The two ends of the pipe 11 are fused together to form two joint parts 15, the joint parts 15 are provided with connecting threads 151, the connecting threads 1...

Embodiment 2

[0032] Such as Figure 5-Figure 6 As shown, the straight-through vacuum heat collecting tube of the present invention includes an outer tube 11 and an inner tube 13 located in the outer tube 11, the outer tube 11 and the inner tube 13 are transparent glass tubes; the inner tube 13 is a transparent glass tube at both ends. A straight-through pipe with an opening is provided, and a vacuum chamber 12 is provided between the outer pipe 11 and the inner pipe 13; a metal pipe 14 is arranged inside the inner pipe 12, and a wall for absorbing solar energy is provided on the outer wall of the metal pipe 14. Selective coating 141; the metal tube 14 is provided with a gap 142 that runs through its two ends, the gap 142 can facilitate the metal tube to be loaded into the inner tube 13, and the metal tube 14 will not squeeze the inner tube 13 when it is heated and expanded; The two ends of the inner tube 11 are respectively fused with the two ends of the outer tube 11 to form two joint par...

Embodiment 3

[0034] Such as Figure 7-Figure 8 As shown, the straight-through vacuum heat collecting tube of the present invention includes an outer tube 11 and an inner tube 13 located in the outer tube 11, the outer tube 11 and the inner tube 13 are transparent glass tubes; the inner tube 13 is a transparent glass tube at both ends. A straight-through pipe with an opening is provided, and a vacuum chamber 12 is provided between the outer pipe 11 and the inner pipe 13; a metal pipe 14 is arranged inside the inner pipe 12, and a wall for absorbing solar energy is provided on the outer wall of the metal pipe 14. Selective coating 141; the metal tube 14 is a rolled metal sheet, the rolled metal sheet can facilitate the shrinkage of the metal tube 14 into the inner tube 13, and the metal tube 14 will not squeeze the inner tube when it is heated and expanded 13. The two ends of the inner tube 11 are respectively fused with the two ends of the outer tube 11 to form two joint parts 15. The joint...

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PUM

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Abstract

The invention provides a safe and stable novel through evacuated collector tube and a solar air heat collecting system assembled through the novel through evacuated collector tube. The novel through evacuated collector tube comprises an outer tube body and an inner tube body arranged inside the outer tube body; the inner tube body are a through tube with openings in the two ends, and a vacuum cavity is arranged between the outer tube body and the inner tube body; a metal tube is arranged in the inner tube body, and the outer wall of the metal tube is provided with a selective coating used for absorbing solar energy; the metal tube is provided with a notch penetrating the upper end and the lower end of the metal tube; the inner tube body is internally provided with a metal tube with a selective coating, the solar energy is mainly absorbed through the metal tube, the temperature difference between the inner tube body and the outer tube body is not large, damage caused by uneven expansion can be avoided, and safety and reliability are achieved; and through a notch of the metal pipe, the inner tube body cannot be extruded to be broken after the metal tube is heated to expand. Connecting parts at the two ends of the novel through evacuated collector tube are in threaded connection with a header through connecting threads, and the sealing performance is better.

Description

technical field [0001] The invention relates to the field of solar heat collection systems, in particular to a straight-through vacuum heat collection tube and a solar air heat collection system assembled therefrom. Background technique [0002] Ordinary solar vacuum heat collecting tubes include an outer glass tube and an inner glass tube. Generally, only one end is provided with an opening. The outer wall of the inner glass tube is coated with a coating for improving solar absorption and reducing reflectivity. The temperature difference is relatively large, and it is easy to break the glass tube due to uneven expansion. The end of the vacuum heat collection tube of a general solar heat collection system is cylindrical, and is sealed and plugged into the header through a "silica gel ring", which has poor sealing performance. Moreover, there must be a large gap between the vacuum heat collecting tubes, which affects the utilization rate of solar energy per unit heat collect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S10/40F24S10/70F24S70/10
CPCF24S10/40F24S10/70F24S70/20Y02E10/44
Inventor 曹国璋庄永聪
Owner FUJIAN MAOSHENG CONSTR ENG CO LTD