Solar heat-absorbing pipe

A technology of solar heat absorption and bellows, which is applied in the field of solar thermal utilization, can solve the problems of complex process and scrapping of the whole tube

Active Publication Date: 2011-03-16
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are multiple welding seams in the heat collecting tube, and the process is relatively compli

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Solar heat-absorbing pipe
  • Solar heat-absorbing pipe
  • Solar heat-absorbing pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] One end of the solar heat absorbing pipe of embodiment 1 of the present invention is as figure 1 shown. The solar heat absorbing tube includes a glass outer tube 2 and a metal inner tube 1 with a high temperature resistant selective absorbing coating. The metal inner tube 1 is made of 316L stainless steel alloy; the glass outer tube 2 is made of high borosilicate 3.3 glass. One end of the connector 3 is welded with the metal inner tube 1, and the other end of the connector 3 is welded with the bellows 4 with expansion compensation; the material of the bellows 4 is 304 stainless steel alloy, and the expansion coefficient is 17×10 -6 / K, with 5 corrugations, one end of the corrugated pipe 4 has a straight section 5, and the port of the straight section 5 is processed into the shape of a thin-walled knife edge 6, such as figure 2 As shown, the thickness of the thinnest edge of the thin-walled knife edge 6 is 0.03mm, the taper is 1°, and the length of the knife edge is 1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Coefficient of expansionaaaaaaaaaa
Login to view more

Abstract

The invention relates to a solar heat-absorbing pipe which comprises a glass outer pipe (2) and a metallic inner pipe (1) provided with a heat-resistant selective absorption coating, wherein one end of a corrugated pipe (4) with an expansion compensation function is welded with the metallic inner pipe (1) through a connecting piece (3), and the other end of the corrugated pipe (4) is connected with the glass outer pipe (2); a vacuum annular enclosure space (7) is formed between the glass outer pipe (2) and the metallic inner pipe (1); the corrugated pipe (4) is coaxially arranged together with the glass outer pipe (2) and the metallic inner pipe (1), one end of the corrugated pipe (4) is a straight drum section the port of which is a thin-wall knife edge, the outermost edge thickness of the straight drum section is less than 0.05mm, the conical degree of the knife edge is less than 3 degrees, or the thin-wall knife edge (6) is provided with a secondary skiving section (8) the conical degree of which less than 3 degrees, and the thin-wall knife edge is inserted into the pipe wall of the port of the glass outer pipe (2) so as to be sealed with the glass outer pipe (2) in a fusing manner.

Description

technical field [0001] The invention relates to a solar heat absorbing tube, which is mainly used in a heat collector of a trough solar thermal power generation system and belongs to the technical field of solar light and heat utilization. Background technique [0002] The trough solar thermal power generation system is a medium-high temperature solar thermal utilization system, which uses a trough parabolic mirror that can track the sun to reflect and focus the incident light on the heat-absorbing tube, and the selective absorption film coated on the surface of the metal inner tube Absorb sunlight to heat the working medium in the tube, generate high-temperature and high-pressure steam, and drive the steam turbine to generate electricity. From 1984 to 1990, LUZ Corporation of the United States successively built nine trough solar thermal power stations in the California desert, with a total installed capacity of 353MW, and the system is still in operation. [0003] The sol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F24J2/48
CPCY02E10/40F24S10/45F24S2025/6013Y02E10/44
Inventor 雷东强王志峰李健
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap