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Novel medium-high temperature solar energy heat collecting tube and preparation method thereof

A solar collector tube, medium and high temperature technology, applied in solar collectors, components of solar collectors, solar thermal energy, etc., can solve the problems of vacuum failure, increased heat loss, decreased efficiency, etc., to prolong the service life , The effect of reducing hydrogen damage and solving vacuum failure

Inactive Publication Date: 2017-07-07
CANGZHOU TRX SOLAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of medium and high temperature solar collector tube that can prevent problems such as vacuum failure, increased heat loss, and reduced efficiency due to hydrogen permeation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] This embodiment provides a new medium-high temperature solar heat collection tube, which includes a metal tube made of austenitic stainless steel, and an aluminum oxide film layer is provided on the inner wall of the metal tube.

[0025] In this embodiment, the thickness of the aluminum oxide film layer is 300 nm.

[0026] In this embodiment, the coating on the inner wall of the metal tube adopts the method of evaporation coating.

[0027] In this embodiment, the coating equipment used for coating the inner wall of the metal tube includes a small high-frequency heating coil, a slender rod, a ceramic block, an evaporation boat and a transmission device, and the small high-frequency heating coil is connected to one end of the slender rod. A ceramic block is arranged at the bottom of the small high-frequency heating coil, an evaporation boat is arranged on the upper part of the small high-frequency heating coil, and the slender rod is connected with the transmission device...

Embodiment 2

[0034] This embodiment provides a new medium-high temperature solar heat collection tube, which includes a metal tube made of austenitic stainless steel, and an aluminum oxide film layer is provided on the inner wall of the metal tube.

[0035] In this embodiment, the thickness of the aluminum oxide film layer is 200 nm.

[0036] In this embodiment, the coating on the inner wall of the metal tube adopts the method of evaporation coating.

[0037] In this embodiment, the coating equipment used for coating the inner wall of the metal tube includes a small high-frequency heating coil, a slender rod, a ceramic block, an evaporation boat and a transmission device, and the small high-frequency heating coil is connected to one end of the slender rod. A ceramic block is arranged at the bottom of the small high-frequency heating coil, an evaporation boat is arranged on the upper part of the small high-frequency heating coil, and the slender rod is connected with the transmission device...

Embodiment 3

[0044] This embodiment provides a new medium-high temperature solar heat collection tube, which includes a metal tube made of austenitic stainless steel, and an aluminum oxide film layer is provided on the inner wall of the metal tube.

[0045] In this embodiment, the thickness of the aluminum oxide film layer is 400 nm.

[0046] In this embodiment, the coating on the inner wall of the metal tube adopts the method of evaporation coating.

[0047] In this embodiment, the coating equipment used for coating the inner wall of the metal tube includes a small high-frequency heating coil, a slender rod, a ceramic block, an evaporation boat and a transmission device, and the small high-frequency heating coil is connected to one end of the slender rod. A ceramic block is arranged at the bottom of the small high-frequency heating coil, an evaporation boat is arranged on the upper part of the small high-frequency heating coil, and the slender rod is connected with the transmission device...

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Abstract

The invention discloses a novel medium-high temperature solar energy heat collecting tube and a preparation method thereof. The novel medium-high temperature solar energy heat collecting tube comprises a metal pipe made of austenitic stainless steel; and the inner wall of the metal pipe is provided with an aluminum oxide coating. Compared with a traditional medium-high temperature solar energy heat collecting tube, the novel medium-high temperature solar energy heat collecting tube has the good hydrogen resistance, the problems of vacuum failure, heat loss increasing and efficiency decreasing caused by hydrogen permeation are solved completely, hydrogen damage to the metal pipe is reduced, and the service life of the heat collecting tube is prolonged and is four times that of the traditional heat collecting tube. When an aluminum oxide layer of the hydrogen preventing coating of the novel medium-high temperature solar energy heat collecting tube is prepared, the method of preparing a pure aluminum coating and then conducting oxidation is adopted, according to the coating preparation method, the problem that the aluminum oxide coating and a matrix cannot be tightly combined is solved, the prepared aluminum oxide coating is compact and complete, and the good hydrogen permeation resisting performance is achieved.

Description

technical field [0001] The invention relates to the field of medium-high temperature solar photothermal power generation, in particular to a novel medium-high temperature solar heat collecting tube and a preparation method thereof. Background technique [0002] With the development of the economy and the progress of the society, the problem of environmental pollution has become more and more serious, and the use of clean energy has become a consensus of everyone. Concentrating Solar Power (CSP, Concentrating Solar Power) has incomparable advantages as a zero-pollution clean energy. Medium and high temperature solar thermal power generation technology is the solar thermal power generation industry with the longest commercial use time and the most mature technology at present. The performance of the core device - the solar collector tube is the main factor determining the profit of the power station. It will The better the conversion of solar radiation into heat, the higher...

Claims

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Application Information

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IPC IPC(8): F24J2/48F24J2/46C23C14/26C23C14/16C23C14/04C23C14/58
CPCY02E10/40C23C14/0021C23C14/046C23C14/16C23C14/26C23C14/5853F24S70/12F24S70/30
Inventor 安德吉曹明刚杨兴张磊王静闫超一范兵
Owner CANGZHOU TRX SOLAR TECH
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