CN202171358U - Straight-through solar metal heat collecting pipe - Google Patents

Straight-through solar metal heat collecting pipe Download PDF

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Publication number
CN202171358U
CN202171358U CN2011202326341U CN201120232634U CN202171358U CN 202171358 U CN202171358 U CN 202171358U CN 2011202326341 U CN2011202326341 U CN 2011202326341U CN 201120232634 U CN201120232634 U CN 201120232634U CN 202171358 U CN202171358 U CN 202171358U
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China
Prior art keywords
coating
sub
pipe
adopts
metal
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Expired - Lifetime
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CN2011202326341U
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Chinese (zh)
Inventor
许世森
刘明义
郑建涛
徐海卫
裴杰
徐越
王保民
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Huaneng Group Technology Innovation Center Co Ltd
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Huaneng Clean Energy Research Institute
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/20—Details of absorbing elements characterised by absorbing coatings; characterised by surface treatment for increasing absorption
    • F24S70/25—Coatings made of metallic material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S70/00—Details of absorbing elements
    • F24S70/30—Auxiliary coatings, e.g. anti-reflective coatings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

This utility model discloses a straight-through solar metal heat collecting pipe, comprising a metal base pipe, wherein the outer surface of the metal basic pipe is coated with an anti-corrosion coating layer and absorption coating layers orderly from inner to outer; the anti-corrosion coating layer is a high-phosphorus chemical nickel-plating coating layer; the thickness of the high-phosphorus chemical nickel-plating coating layer is within 20-20 microns; and the absorption coating layers orderly comprises a metal infrared reflection sub-coating layer, a metal ceramic intermediate/high temperature heat absorption sub-coating layer and an antireflection sub-coating layer from inner to outer. The pipe disclosed by this utility model solves a material corrosion problem and the high temperature resistant and anti-oxidation problems of a heat absorption layer at intermediate-high temperatures of 200-500 degrees centigrade; in addition, the pipe disclosed by this utility model realizes the purposes of anti-corrosion capacity, high-temperature resistance, high-pressure resistance, low cost, simple manufacture technology and strong practicability.

Description

Straight-through type solar energy collector metal pipe
Technical field
The utility model belongs to solar energy heat utilization technical field, is specifically related to a kind of straight-through type solar energy collector metal pipe, particularly a kind of middle high temperature solar collector metal pipe that uses in the Fresnel solar energy heat generating system that is applicable to.
Background technology
Along with increasing rapidly of national economy, vigorous day by day to demands for energy, energy shortage and the problem of environmental pollution that fossil energy produced are becoming increasingly acute.The regenerative resource resource potential is big, sustainable use, satisfy energy demand, improve energy resource structure, reduce environmental pollution, aspect such as promote economic development brought into play important function, caused the extensive concern of international community.Regenerative resource mainly is meant solar energy, wind energy, biomass energy and tide energy etc.From aspect analyses such as stock number, distribution, spatter property, engineering reliabilities, solar energy all has more superiority than other regenerative resource.Solar energy generation technology is the focus of energy technology development, also is the emphasis of international renewable energy technologies development.
Solar energy have resource abundance, longevity, distribution extensively, safety, cleaning and technology advantage reliably.Because solar energy can convert multiple other forms of energy to, so range of application is very extensive.Wherein solar electrical energy generation has very big development potentiality in China.China's solar energy resources is abundant, national total area 2/3 or more area year sunshine time greater than 2000 hours, close with the U.S., than Europe, Japanese much superior.The theoretical reserves of China's solar energy resources reach annual 17000 hundred million tons of standard coals, approximate the summation of tens thousand of Three Gorges Projects generated energy.
Advantages such as wherein the hot generation technology of Fresnel solar energy is simple in structure with it, cost is low have the good commercial prospect.The Fresnel solar energy heat generating system is to utilize the principal reflection mirror with tracking solar motion device to be listed as the sunshine reflection is gathered on quadric secondary reflex mirror and the thermal-collecting tube; Thermal-collecting tube is converted into heat energy with the radiant energy of sunshine; And the water of the interior HTHP of heating thermal-collecting tube, produce the generating of steam pushing turbine generating set.And straight-through type solar energy collector metal pipe is the core component of Fresnel solar energy heat generating system.At present; Solar energy thermal-power-generating generally adopts the glass-metal vacuum solar heat-collecting pipe with thermal-collecting tube; And the Fresnel solar energy heat generating system directly adopts the collector metal pipe, and this collector metal pipe exists the material corrosion problem under 200～500 ℃ of middle high temperature, the high temperature resistant and anti-oxidant problem of heat absorbing coating.
Summary of the invention
In order to overcome the deficiency that above-mentioned prior art exists; The purpose of the utility model is to provide a kind of straight-through type solar energy collector metal pipe; Overcome the material corrosion problem that exists under 200～500 ℃ of middle high temperature, the high temperature resistant and anti-oxidant problem of heat absorbing coating, realized anticorrosive, high temperature resistant, high pressure, the straight-through type solar energy collector metal pipe that cost is lower, preparation technology is simple and practical.
In order to achieve the above object, the technical scheme that the utility model adopted is:
A kind of straight-through type solar energy collector metal pipe; Comprise metal parent tube 1; The outer surface from-inner-to-outer of described metal parent tube 1 is covered as corrosion-resistant coating 2 and absorber coatings 3 successively; Wherein corrosion-resistant coating 2 is the high phosphorus chemical plating nickel coating; The thickness of this high phosphorus chemical plating nickel coating is 10-20 μ m, and absorber coatings 3 from-inner-to-outers are followed successively by in the sub-coating of metallic red external reflectance 31, the cermet high temperature absorb heat sub-coating 32 and the sub-coating 33 of antireflective, and the metal material of the sub-coating 31 of metallic red external reflectance adopts Nb, Cu, Al, Ti, Mg, Rh, Ag or Au; The thickness of the sub-coating 31 of this metallic red external reflectance is 0.2-0.5 μ m, and the absorb heat material of sub-coating 32 of high temperature adopts NbN, Nb, TiN, Ti, TiAl, TiAlN, TiAlON, TiAlO, Cr in the cermet 2O 3, Cr, HfO 2, Hf, ZrN or Zr, the absorb heat thickness of sub-coating 32 of high temperature is 0.3-0.5 μ m in this cermet, the material of the sub-coating 33 of antireflective adopts TiO 2, Ta 2O 5, Nb 2O 5, Al 2O 3, SiO 2Or Si 3N 4, the thickness of the sub-coating 33 of this antireflective is 0.2-0.5 μ m.
The material of described metal parent tube 1 is a carbon steel.
Described corrosion-resistant coating 2 adopts the chemical nickel plating method preparation.
The sub-coating 31 of described metallic red external reflectance adopts the preparation of vacuum magnetic-control sputtering coating process.
The high temperature coating 32 of absorbing heat adopts the preparation of vacuum magnetic-control sputtering coating process in the described cermet.
The sub-coating 33 of described antireflective adopts the preparation of vacuum magnetic-control sputtering coating process, and the structure of the sub-coating 33 of this antireflective is single layer structure or double-decker.
Be covered as corrosion-resistant coating 2 and absorber coatings 3 successively through outer surface from-inner-to-outer at the metal parent tube 1 of straight-through type solar energy collector metal pipe; Wherein corrosion-resistant coating 2 is the high phosphorus chemical plating nickel coating; The thickness of this high phosphorus chemical plating nickel coating is 10-20 μ m, and absorber coatings 3 from-inner-to-outers are followed successively by in the sub-coating of metallic red external reflectance 31, the cermet high temperature absorb heat sub-coating 32 and the sub-coating 33 of antireflective, and the amorphous structure of high phosphorus chemical plating nickel coating makes it not have crystal boundary, dislocation, twin or other defect in Ni-P solid solution tissue very uniformly; And; Amorphous state coating surface passivating film is highly uniform non crystalline structure, defectives such as dislocation-free, fault, and toughness might as well; Be not easy to take place mechanical damage; In addition corrosion-resistant coating 2 prepare the method that adopts chemical nickel plating, this method cost is low, easy and simple to handle, coating is fine and close, function admirable, and is easy to large-scale application; The sub-coating 33 of antireflective can effectively suppress the reflection of the beam energy on thermal-collecting tube surface; The absorbent properties on thermal-collecting tube surface have been improved; Therefore overcome and existed, made high temperature straight-through type solar energy collector metal Guan Buxu Vacuum Package in the following material corrosion problem of 200～500 ℃ of middle high temperature, the high temperature resistant and anti-oxidant problem of heat absorbing coating, can directly application under high temperature, air ambient; At high temperature have simultaneously high absorptivity (α＞0.09) and low emissivity (ε＜0.1) and high heat resistance; The coating heat resistance can reach 500 ℃, and this collector metal pipe has been simplified traditional thermal-collecting tube preparation technology, has reduced its production cost; So also making high temperature straight-through type solar energy collector metal pipe can adopt high-temperature high-pressure steam in addition is working medium, directly carries out the steam turbine turbine power generation.Having avoided the glass-metal vacuum heat collection pipe to adopt conduction oil is working medium; Must produce the process of high temperature, high-pressure steam through secondary heat exchange; And because the conduction oil heat resistance generally is no more than 450 ℃, and must produce high temperature, high-pressure steam through the secondary heat exchange process, so the steam parameter of its generation is lower; Be difficult to directly adopt conventional steam turbine turbine power generation; Increased cost of electricity-generating, reduced generating efficiency, and the utility model was increased to the thermal-collecting tube corrosion resistance 20 years owing to increased corrosion-resistant coating 2; Can satisfy thermal-collecting tube even the instructions for use under the salt mist environment by the sea fully; Can to adopt the very low carbon steel of cost be parent tube to the metal parent tube 1 of this utility model in addition, can significantly reduce the production cost of collector metal pipe, realized anticorrosive, high temperature resistant, high pressure, the straight-through type solar energy collector metal pipe that cost is lower, preparation technology is simple and practical.
Description of drawings
Fig. 1 is the sectional structure sketch map of the utility model.
Fig. 2 is the sectional structure sketch map of the absorber coatings of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in more detail.
As shown in Figure 1; Straight-through type solar energy collector metal pipe; Comprise metal parent tube 1, the outer surface from-inner-to-outer of described metal parent tube 1 is covered as corrosion-resistant coating 2 and absorber coatings 3 successively, and wherein corrosion-resistant coating 2 is the high phosphorus chemical plating nickel coating; The thickness of this high phosphorus chemical plating nickel coating is 10-20 μ m; As shown in Figure 2, and absorber coatings 3 from-inner-to-outers are followed successively by in the sub-coating of metallic red external reflectance 31, the cermet high temperature absorb heat sub-coating 32 and the sub-coating 33 of antireflective, the metal material of the sub-coating 31 of metallic red external reflectance adopts Nb, Cu, Al, Ti, Mg, Rh, Ag or Au; The thickness of the sub-coating 31 of this metallic red external reflectance is 0.2-0.5 μ m, and the absorb heat material of sub-coating 32 of high temperature adopts NbN, Nb, TiN, Ti, TiAl, TiAlN, TiAlON, TiAlO, Cr in the cermet 2O 3, Cr, HfO 2, Hf, ZrN or Zr, the absorb heat thickness of sub-coating 32 of high temperature is 0.3-0.5 μ m in this cermet, the material of the sub-coating 33 of antireflective adopts TiO 2, Ta 2O 5, Nb 2O 5, Al 2O 3, SiO 2Or Si 3N 4, the thickness of the sub-coating 33 of this antireflective is 0.2-0.5 μ m.Described corrosion-resistant coating 2 adopts the chemical nickel plating method preparation.The sub-coating 31 of described metallic red external reflectance adopts the preparation of vacuum magnetic-control sputtering coating process.The high temperature coating 32 of absorbing heat adopts the preparation of vacuum magnetic-control sputtering coating process in the described cermet.The sub-coating 33 of described antireflective adopts the preparation of vacuum magnetic-control sputtering coating process, and the structure of the sub-coating 33 of this antireflective is single layer structure or double-decker.The material of described metal parent tube 1 is a carbon steel.
The operation principle of the utility model is: when the principal reflection mirror of following the tracks of the solar motion device be listed as when gathering the sunshine reflection on the middle high temperature straight-through type solar energy collector metal pipe; At first the sub-coating 33 of antireflective suppresses the reflection of the beam energy on thermal-collecting tube surface; Strengthen the absorbent properties on thermal-collecting tube surface with this; The high temperature coating 32 of absorbing heat is carried out the photo-thermal power conversion in the cermet subsequently, and the sub-coating 31 of metallic red external reflectance reduces the thermal-collecting tube infrared radiation loss.The high phosphorus chemical plating nickel coating of corrosion-resistant coating 2 prevents the corrosion of thermal-collecting tube under the hot environment.

Claims (6)

1. straight-through type solar energy collector metal pipe; Comprise metal parent tube (1); It is characterized in that: the outer surface from-inner-to-outer of described metal parent tube 1 is covered as corrosion-resistant coating (2) and absorber coatings (3) successively; Wherein corrosion-resistant coating (2) is the high phosphorus chemical plating nickel coating; The thickness of this high phosphorus chemical plating nickel coating is 10-20 μ m, and absorber coatings (3) from-inner-to-outer is followed successively by in the sub-coating of metallic red external reflectance (31), the cermet high temperature absorb heat sub-coating (32) and the sub-coating of antireflective (33), and the metal material of the sub-coating of metallic red external reflectance (31) adopts Nb, Cu, Al, Ti, Mg, Rh, Ag or Au; The thickness of the sub-coating 31 of this metallic red external reflectance is 0.2-0.5 μ m, and the absorb heat material of sub-coating (32) of high temperature adopts NbN, Nb, TiN, Ti, TiAl, TiAlN, TiAlON, TiAlO, Cr in the cermet 2O 3, Cr, HfO 2, Hf, ZrN or Zr, the absorb heat thickness of sub-coating (32) of high temperature is 0.3-0.5 μ m in this cermet, the material of the sub-coating of antireflective (33) adopts TiO 2, Ta 2O 5, Nb 2O 5, Al 2O 3, SiO 2Or Si 3N 4, the thickness of the sub-coating of this antireflective (33) is 0.2-0.5 μ m.
2. straight-through type solar energy collector metal pipe according to claim 1 is characterized in that: the material of described metal parent tube (1) is a carbon steel.
3. according to claim 1 or the described straight-through type solar energy collector metal of claim 2 pipe, it is characterized in that: described corrosion-resistant coating (2) adopts the chemical nickel plating method preparation.
4. according to claim 1 or the described straight-through type solar energy collector metal of claim 2 pipe, it is characterized in that: the sub-coating of described metallic red external reflectance (31) adopts the preparation of vacuum magnetic-control sputtering coating process.
5. according to claim 1 or the described straight-through type solar energy collector metal of claim 2 pipe, it is characterized in that: the high temperature coating (32) of absorbing heat adopts the preparation of vacuum magnetic-control sputtering coating process in the described cermet.
6. according to claim 1 or the described straight-through type solar energy collector metal of claim 2 pipe; It is characterized in that: the sub-coating of described antireflective (33) adopts the preparation of vacuum magnetic-control sputtering coating process, and the structure of the sub-coating of this antireflective (33) is single layer structure or double-decker.
CN2011202326341U 2011-07-01 2011-07-01 Straight-through solar metal heat collecting pipe Expired - Lifetime CN202171358U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102207341A (en) * 2011-07-01 2011-10-05 中国华能集团清洁能源技术研究院有限公司 Medium-high-temperature through type metal solar collector tube
CN103103503A (en) * 2013-01-24 2013-05-15 北京大学 Production equipment for preparing semiconductor film on tubular base
CN106291908A (en) * 2016-10-18 2017-01-04 中国科学院国家天文台南京天文光学技术研究所 Golden enhancement mode reflectance coating system and preparation method for large-scale astronomical telescope primary mirror

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102207341A (en) * 2011-07-01 2011-10-05 中国华能集团清洁能源技术研究院有限公司 Medium-high-temperature through type metal solar collector tube
CN103103503A (en) * 2013-01-24 2013-05-15 北京大学 Production equipment for preparing semiconductor film on tubular base
CN103103503B (en) * 2013-01-24 2014-11-05 北京大学 Production equipment for preparing semiconductor film on tubular base
CN106291908A (en) * 2016-10-18 2017-01-04 中国科学院国家天文台南京天文光学技术研究所 Golden enhancement mode reflectance coating system and preparation method for large-scale astronomical telescope primary mirror
CN106291908B (en) * 2016-10-18 2021-05-11 中国科学院国家天文台南京天文光学技术研究所 Gold-enhanced reflecting film system for primary mirror of large astronomical telescope and preparation method thereof

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ASS Succession or assignment of patent right

Owner name: CHINA HUANENG GROUP R + D CENTER

Effective date: 20140529

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Effective date of registration: 20140529

Address after: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building A block 26 layer

Patentee after: China Huaneng Group Clean Energy Technology Research Institute Co., Ltd.

Patentee after: Huaneng Group Technology Innovation Center

Address before: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building A block 26 layer

Patentee before: China Huaneng Group Clean Energy Technology Research Institute Co., Ltd.

CX01 Expiry of patent term

Granted publication date: 20120321

CX01 Expiry of patent term