CN109899997A - A kind of tower photo-thermal power station heat dump high temperature insulating safeguard structure - Google Patents
A kind of tower photo-thermal power station heat dump high temperature insulating safeguard structure Download PDFInfo
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- CN109899997A CN109899997A CN201910196892.XA CN201910196892A CN109899997A CN 109899997 A CN109899997 A CN 109899997A CN 201910196892 A CN201910196892 A CN 201910196892A CN 109899997 A CN109899997 A CN 109899997A
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- China
- Prior art keywords
- heat dump
- high temperature
- power station
- thermal power
- temperature insulating
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- 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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Abstract
The invention discloses a kind of tower photo-thermal power station heat dump high temperature insulating safeguard structures, the high temperature insulating safeguard structure includes the external protection coating of braced frame and interior the closed seal insulating layer and outside that are separately positioned on the inside of the braced frame, is air layer between the interior closed seal insulating layer and external protection coating.Design is optimized with high temperature insulating safeguard structure to heat dump with high temperature insulating safeguard structure in tower photo-thermal power station heat dump of the invention, the heat-insulated protection of heat dump is separated with heat insulation function, under the premise of guaranteeing the heat dump thermal efficiency, pass through the optimization design of structure, the selection for avoiding high cost protective materials, reduces costs；By the way that reasonable ventilation opening is arranged in structure, come meet the heat dump winter, Xia Jiduan season runs when to environment temperature and ventilation the needs of, guarantee system and equipment operation safety and reliability.
Description
Technical field
The present invention relates to the technical fields of tower photo-thermal power station, more particularly, are related to a kind of tower photo-thermal power station heat absorption
Device high temperature insulating safeguard structure.
Background technique
For tower photo-thermal power station, the main function of heat dump is the solar energy for tracking Jing Chang, focusing and reflecting
It is converted to the thermal energy that can efficiently utilize, provides heat source for the Turbo-generator Set of rear end.Supporting steel structure is fixed inside heat dump
In on heat absorption tower platform, the outside of supporting steel structure is fixed in heated tube panel suspension, the sunlight for the reflection of absorbing mirror field it is straight
Radiation is connect, but the supporting steel structure part of header and non-effective heat sink region above and below heated tube panel is then needed to be thermally shielded anti-
Shield, it is therefore an objective to prevent sunlight spilling or heliostat tracking error from causing high temperature to steel structure and its internal installation equipment.
Therefore, heat dump must can will expose to surface using the high reflection material of white with heat-insulated protective materials
The high hot-fluid radiation sunlight overwhelming majority reflects away；In addition, must have the energy of resistance to strong ultraviolet radiation due to outdoor mounted
Power, the ability of resistance to outdoor rain, snow, high wind, the alternately weather such as be exposed to the sun, and the ability with the sunlight dry combustion method of high heat resistance stream, in temperature
It will not occur to crack under poor stress or damage；With heat dump daily start and stop and Changes in weather, heat-insulated protection is also required to daily
Bear hot and cold alternation circulation at least once.Generally speaking, working environment and operation characteristic all propose its material and structure
Higher requirement.
In addition, belonging to the environment of a relative closure for heat dump, inside is disposed with many electrical and thermal controls
System and equipment, but the operating temperature of these system or equipments has certain limitation requirement, that is, has to consider reasonable warm
Gating condition: summer, environment temperature it is higher, bear the radiation of high hot-fluid and in the case that therrmodynamic system externally radiates, it is necessary to examine
Consider good ventilation, to reduce heat dump internal environment operating temperature, guarantee electric-control system or equipment safety, extends it and use the longevity
Life；Winter, especially solar energy resources its environment temperature of more rich the Northwest are very low, to maintain heat dump internal work temperature
It spends and improves heat dump thermal conversion efficiency, then need to take the preferable warm measure of warming dimension.
The commercialization photo-thermal power station that has run of foreign countries, heat-insulated protective plate frequently be that there is receiving for exclusive patented technology
Rice plate or hard ceramic plate, although superior performance, cost is excessively high, accounts for about 1/10th of heat dump entirety cost of investment, if
Standby later maintenance replacement cost and period are difficult to meet project demands.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention proposes that a kind of heat dump particular job environment and operation of being directed to needs
The tower photo-thermal power station heat dump high temperature insulating safeguard structure asked.
The present invention provides a kind of tower photo-thermal power station heat dump high temperature insulating safeguard structure, the high temperature insulating protection
Structure includes the outer protection of braced frame and the interior closed seal insulating layer and outside that are separately positioned on the inside of the braced frame
Layer is air layer between the interior closed seal insulating layer and external protection coating.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, the height
The heat-insulated safeguard structure of temperature is arranged in the upper protective area and lower portion area of the tower effective heat affected zone of photo-thermal power station heat dump.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, it is described interior
Closed seal insulating layer is fixed on the inside supporting steel structure in the upper protective area and lower portion area.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, it is described outer
Protective layer is radiated using high temperature resistant, resistance to sleet washes away and surface protective plate with high reflectivity.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, it is described outer
Protective layer back side is fixed in braced frame, and braced frame is in Modular Structure Design.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, it is described outer
Protective layer is bilayer or multilayer structure, is installed between adjacent layer with fissure of displacement tooled joint structure type.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, it is described outer
The outermost layer of protective layer is provided with several counterbores, and the external protection coating is fixed on support frame by passing through the fixing bolt of counterbore
On frame.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, the peace
Airtight and watertight padding is filled in counterbore equipped with fixing bolt.
One embodiment of the tower photo-thermal power station heat dump high temperature insulating safeguard structure according to the present invention, under described
The lower part of portion guard plot is circumferentially evenly arranged the ventilation import that can be opened or closed, and the top layout of the heat dump has logical
Wind outlet.
Tower photo-thermal power station heat dump of the invention protects heat dump high temperature insulating with high temperature insulating safeguard structure and ties
Design is optimized in structure, and the heat-insulated protection of heat dump is separated with heat insulation function, under the premise of guaranteeing the heat dump thermal efficiency, is led to
The optimization design for crossing structure avoids the selection of high cost protective materials, reduces costs；It is reasonable logical by being arranged in structure
Air port, come meet the heat dump winter, Xia Jiduan season runs when to environment temperature and ventilation the needs of, guarantee system and equipment operation
Safety and reliability.
Detailed description of the invention
Fig. 1 shows tower photo-thermal power station heat dump high temperature insulating safeguard structure according to an exemplary embodiment of the present invention
Overall structure diagram after installation.
Fig. 2 shows tower photo-thermal power station heat dump high temperature insulating safeguard structures according to an exemplary embodiment of the present invention
Structural schematic diagram.
Fig. 3 shows tower photo-thermal power station heat dump high temperature insulating safeguard structure according to an exemplary embodiment of the present invention
The structural schematic diagram of China and foreign countries' protective plate.
Description of symbols:
Supporting steel structure 4- upper protective area, the effective heat affected zone 5-, the back 6- are protected inside 1- heat absorption tower, 2- heat absorption tower platform 3-
Warm floor, 7- ventilation import, 8- draft outlet, 9- lower portion area, closed seal insulating layer, 42- external protection coating, 43- branch in 41-
Support frame frame, 4211- first protect inner cord, 4212- second to protect inner cord, the first protective plate of 4221- outer layer, 4222- second
Protective plate outer layer, 423- fixing bolt.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification unless specifically stated can be equivalent or with similar purpose by other
Alternative features are replaced.That is, unless specifically stated, each feature is an example in a series of equivalent or similar characteristics
?.
Tower photo-thermal power station heat dump of the invention is specifically described and is illustrated with high temperature insulating safeguard structure below.
Fig. 1 shows tower photo-thermal power station heat dump high temperature insulating safeguard structure according to an exemplary embodiment of the present invention
Overall structure diagram after installation.
As shown in Figure 1, tower photo-thermal power station heat dump be arranged in heat absorption tower 1 on, be divided on the whole effective heat affected zone 5 and
Upper protective area 4, lower portion area 9, the inside supporting steel structure 3 of heat dump are fixed on heat absorption tower platform 2 and are used to support
Related system equipment, heated tube panel and protection plot structure etc. inside heat dump.
Wherein, it is disposed with heated tube panel in effective heat affected zone 5, heated tube panel suspension is fixed on the outside of heat dump, directly
The high hot-fluid solar radiation of heliostat reflection is born, it both can be device of working medium that inside, which is the heat absorption working medium of flowing, or
Conduction oil, fused salt or liquid metal etc..The backlight side of heated tube panel is laid with back insulating layer 6, for reduce thermal loss with
Guarantee the heat absorption efficiency of heat dump.Guard plot is arranged in the upper and lower position of effective heat affected zone 5, the height and structure of each guard plot
Size is then related with heat dump overall construction design, heliostat control precision and mirror field operation reserve etc..
Fig. 2 shows tower photo-thermal power station heat dump high temperature insulating safeguard structures according to an exemplary embodiment of the present invention
Structural schematic diagram, it is anti-that Fig. 3 shows tower photo-thermal power station heat dump high temperature insulating according to an exemplary embodiment of the present invention
The structural schematic diagram of protection structure China and foreign countries protective plate.
As depicted in figs. 1 and 2, an exemplary embodiment of the present invention, the tower photo-thermal power station heat dump high temperature
Heat-insulated safeguard structure includes braced frame 43 and the interior closed seal insulating layer 41 for being separately positioned on the inside of braced frame 43 and outer
The external protection coating 42 of side is air layer between interior closed seal insulating layer 41 and external protection coating 42.
For the present invention by being designed using double-layer structure safeguard structure, outer layer preferably uses high temperature resistant radiation, resistance to sleet
It washes away and there is such as protective plate of external protection coating 42 of the characteristics such as high reflectance to be thermally shielded protection to heat dump on surface, internal layer is then
Warming dimension temperature is carried out to heat dump using the interior closed seal insulating layer 41 of conventional insulation material composition, is empty between inside and outside layer
Gas-bearing formation is aerated heat dissipation using the free convection of air, to reduce wall temperature on the inside of outer protective plate.
The top that high temperature insulating safeguard structure of the invention is arranged in effective heat affected zone 5 in tower photo-thermal power station heat dump is anti-
Protect area 4 and lower portion area 9.
Specifically, interior closed seal insulating layer 41 is fixed on the inside supporting steel structure in upper protective area 4 and lower portion area 9
On 3, braced frame 43 is fixed in the upper protective area 4 and lower portion area 9 for being disposed with interior closed seal insulating layer 41.Its
In, braced frame 43 is preferably in modularized design, and convenient for scene lifting and Fast Installation, and braced frame is spliced by fashioned iron
It forms, including horizontally-supported, vertical support and diagonal brace etc..
Wherein, external protection coating 42 is radiated using high temperature resistant, resistance to sleet washes away and surface protective plate with high reflectivity, with
Effective heat-insulated protection is carried out to heat dump.The thickness of external protection coating 42 is related with outer wall temperature, preferably bilayer or multilayer structure,
Convenient for outside vulnerable areas part maintenance or replace and replacement cost can be reduced；Also, with fissure of displacement tooled joint knot between adjacent layer
The installation of configuration formula, it is specific as shown in figure 3, to prevent sunlight from exposing to back system or structure through gap.
According to the present invention, the outermost layer of external protection coating 42 is provided with several counterbores, and external protection coating 42 is by passing through counterbore
Fixing bolt 423 be fixed in braced frame 43.In order to avoid fixing bolt 423 is directly exposed in the irradiation of sunlight,
After installing nut and gasket, airtight and watertight padding is filled in the counterbore for being equipped with fixing bolt, wherein the material of airtight and watertight padding
Expect be advisable identical as the material of external protection coating 42.
As shown in Figure 1, the lower part in lower portion area 9 is circumferentially evenly arranged the ventilation import 7 that can be opened or closed, it should
Ventilation import 7 can also be used as the entrance of heat absorption 1 inspection platform of tower；The top layout of heat dump has draft outlet, thus, it is possible to
Enough promote atmosphere in heat dump internal flow using high-altitude free convection and temperature and pressure.
Wind direction is targetedly opened or closed when ventilation import 7 can be local daily or per according to project, is passed through
Air flowing maintains heat dump internal electric to allow to work within operating temperature requirements in safety with heat control system or equipment.
The present invention will be described combined with specific embodiments below.
As shown in Figure 1, heat absorber system is arranged on heat absorption tower 1, internal supporting steel structure 3 is fixed on heat absorption tower platform 2,
The heated tube panel of outer side mounting heat dump simultaneously forms effective heat affected zone 5, and solar radiation is directly born to light side for absorbing heat, is carried on the back
Light is then laid with back insulating layer 6, for guaranteeing the heat dump thermal efficiency.
The upper and lower region of heated tube panel is respectively upper protective area and lower portion area, and high temperature insulating safeguard structure is adopted
It is designed with inside and outside double-layer structure.As shown in Fig. 2, external protection coating adopt 42 with high temperature resistant radiation, resistance to sleet wash away and surface have compared with
The protective plate of the characteristics such as high reflectance, external protection coating 42 are fixed in braced frame 43, are thermally shielded protection to heat dump；Internal layer
Dimension temperature, interior closed seal insulating layer 41 are then carried out to heat dump using the interior closed seal insulating layer 41 of conventional insulation material composition
It is air layer between external protection coating 42.
As shown in figure 3, external protection coating 42 uses bilayer or multilayer structure, such as the first protection inner cord 4211 and the first protection
Plate outer layer 4221 or the second protection inner cord 4212 and the second protective plate outer layer 4222, wherein internal layer and outer layer are in fissure of displacement tooled joint knot
Structure installation, to prevent sunlight from exposing to back structures or system through gap.The outer layer of external protection coating 42 is designed and is machined with
Counterbore is fixed in braced frame 43 by fixing bolt 423, is carried out again using airtight and watertight padding to counterbore after being tightened using nut
Filling, avoids fixing bolt 423 from being directly exposed to solar irradiation and hits.Wherein, airtight and watertight padding material and external protection coating material phase
Together.
The lower part circumferential direction in lower portion area 9 has been evenly arranged ventilation import 7, also the entrance as heat absorption tower platform 2；It inhales
Hot device top layout has draft outlet 8.When local daily or per according to project wind direction targetedly open or close divulge information into
Mouth 7, promotes atmosphere in heat dump internal flow, to maintain inside heat dump using high-altitude free convection or forced convertion and temperature and pressure
Electrically allow within operating temperature requirements with heat control system or equipment in safety.
In conclusion the invention proposes a kind of new tower photo-thermal power station heat dump high temperature insulating safeguard structure,
Heat-insulated protection and the heat insulation function of heat dump are separated, outer layer is washed away using high temperature resistant radiation, resistance to sleet and surface is with higher
The protective plate of the characteristics such as reflectivity is thermally shielded protection, the closed seal that internal layer then uses conventional insulation material to form to heat dump
Insulating layer carries out warming dimension temperature to heat dump；In addition, considering reasonable, sufficient ventilation import and export, in structure design to protect
When card heat dump is run under the conditions of summer high-temperature, internal electric and heat control system or equipment is maintained to allow operating temperature in safety
Within it is required that, meanwhile, wind direction is targetedly opened or closed when ventilation import can be local daily or per according to project.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (9)
1. a kind of tower photo-thermal power station heat dump high temperature insulating safeguard structure, which is characterized in that the high temperature insulating protection knot
Structure includes the external protection coating of braced frame and interior the closed seal insulating layer and outside that are separately positioned on the inside of the braced frame,
It is air layer between the interior closed seal insulating layer and external protection coating.
2. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to claim 1, which is characterized in that described
High temperature insulating safeguard structure is arranged in the upper protective area and lower portion area of the tower effective heat affected zone of photo-thermal power station heat dump.
3. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to claim 2, which is characterized in that described
Interior closed seal insulating layer is fixed on the inside supporting steel structure in the upper protective area and lower portion area.
4. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to any one of claim 1 to 3, special
Sign is that the external protection coating is radiated using high temperature resistant, resistance to sleet washes away and surface protective plate with high reflectivity.
5. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to claim 1, the external protection coating back
Side is fixed in braced frame, and the braced frame is in Modular Structure Design.
6. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to any one of claim 1 to 3, special
Sign is that the external protection coating is bilayer or multilayer structure, is installed between adjacent layer with fissure of displacement tooled joint structure type.
7. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to claim 6, which is characterized in that described
The outermost layer of external protection coating is provided with several counterbores, and the external protection coating is fixed on support by passing through the fixing bolt of counterbore
On frame.
8. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to claim 7, which is characterized in that described
It is equipped in the counterbore of fixing bolt filled with airtight and watertight padding.
9. tower photo-thermal power station heat dump high temperature insulating safeguard structure according to claim 2, which is characterized in that described
The lower part in lower portion area is circumferentially evenly arranged the ventilation import that can be opened or closed, and the top layout of the heat dump has
Draft outlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196892.XA CN109899997A (en) | 2019-03-15 | 2019-03-15 | A kind of tower photo-thermal power station heat dump high temperature insulating safeguard structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196892.XA CN109899997A (en) | 2019-03-15 | 2019-03-15 | A kind of tower photo-thermal power station heat dump high temperature insulating safeguard structure |
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| CN109899997A true CN109899997A (en) | 2019-06-18 |
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| CN201910196892.XA Pending CN109899997A (en) | 2019-03-15 | 2019-03-15 | A kind of tower photo-thermal power station heat dump high temperature insulating safeguard structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111911373A (en) * | 2020-07-03 | 2020-11-10 | 深圳中科能投能源有限公司 | Heat collection tower and tower type solar power generation system |
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| CN208312749U (en) * | 2018-04-09 | 2019-01-01 | 浙江中控太阳能技术有限公司 | A kind of heat dump for tower type solar energy thermal power generation |
| CN209944783U (en) * | 2019-03-15 | 2020-01-14 | 东方电气集团东方锅炉股份有限公司 | High-temperature heat insulation protection structure for tower type photo-thermal power station heat absorber |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202267255U (en) * | 2011-09-22 | 2012-06-06 | 长沙锅炉厂有限责任公司 | Insulating box for tower-type heat absorber system capable of generating electricity from heat of solar energy |
| CN207350970U (en) * | 2017-07-27 | 2018-05-11 | 东方电气集团东方锅炉股份有限公司 | A kind of fused salt heat dump tube panel preheating and anti-condensation protective device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111911373A (en) * | 2020-07-03 | 2020-11-10 | 深圳中科能投能源有限公司 | Heat collection tower and tower type solar power generation system |
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