CN220206083U - Vacuum sleeve type solar heat absorber - Google Patents
Vacuum sleeve type solar heat absorber Download PDFInfo
- Publication number
- CN220206083U CN220206083U CN202321513174.9U CN202321513174U CN220206083U CN 220206083 U CN220206083 U CN 220206083U CN 202321513174 U CN202321513174 U CN 202321513174U CN 220206083 U CN220206083 U CN 220206083U
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- heat
- shaped base
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 38
- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000005338 heat storage Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 24
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002585 base Substances 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000002784 hot electron Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- Y02E10/44—Heat exchange systems
Abstract
The utility model discloses a vacuum sleeve type solar heat absorber, which relates to the technical field of solar photo-thermal power generation and comprises a funnel type base, a heat absorption pipe, a conveying long neck funnel, an inner support and a cover body; the funnel-shaped base is provided with an annular cavity, and the outer wall of the funnel-shaped base is provided with a working medium inlet and is communicated with the annular cavity; the heat absorption pipes are fixed corresponding to the upper ends of the annular cavities, a shell with two through ends is formed, and the inner cavities of the heat absorption pipes are communicated with the annular cavities; the conveying long-neck funnel is coaxially fixed with the shell and the funnel-shaped base; the upper part of the conveying long-neck funnel is communicated with the upper end of the heat absorption pipe, and the neck part of the conveying long-neck funnel extends out of the inner cavity of the funnel base; one end of the inner support is fixedly connected with the inner wall of the shell, and the other end of the inner support is fixedly connected with the outer wall of the conveying long-neck funnel; the side wall of the cover body is covered with the outer wall of the top of the shell, and a material circulation gap is reserved between the cover body and the top of the shell. The absorber provided by the utility model has a simple structure, reduces the manufacturing cost, and can effectively reduce the heat loss of working media.
Description
Technical Field
The utility model relates to the technical field of solar photo-thermal power generation, in particular to a vacuum sleeve type solar heat absorber.
Background
The current mainstream photovoltaic power generation technology is limited by weather, illumination time, regions and other conditions, so that the problems of intermittence, instability and the like exist, but the photo-thermal power generation can realize continuous, stable and schedulable high-quality power output due to the existence of a large-scale heat storage system, and the photovoltaic power generation technology has wide development prospect.
The solar thermal power generation is to firstly absorb and convert solar energy into heat energy through a heat storage material to store the heat energy, and then generate power through a heat engine. The technology has no consumption of fossil fuel and no pollution to the environment. At present, the two main categories are divided: the solar heat energy is utilized to directly generate electricity, such as thermoelectric power generation of a semiconductor or a metal material, hot electron and thermal ion power generation in a vacuum device, alkali metal thermal power generation conversion, magnetohydrodynamic power generation and the like; the other type is solar energy indirect power generation, which enables solar energy to drive a generator to generate power through a heat engine, and the basic composition of the solar energy indirect power generation device is similar to that of conventional power generation equipment, except that the solar energy is converted from solar energy.
The solar energy indirect power generation mode is developed relatively mature at present, and the solar energy photo-thermal power generation technology can be divided into four major types of tower type, groove type, disc type and Fresnel type according to the energy collecting mode and structure. The solar island control system of the tower system is complex, has high maintenance cost, has the characteristics of high condensation multiple, high photo-thermal conversion efficiency, short heat transfer path and the like, and is very suitable for large-scale and large-capacity commercial application, so the tower type photo-thermal power generation system is considered as a very potential technical route, and currently accounts for about 20% of the total installed amount of global solar thermal power generation.
The tower type power generation is to collect sunlight to a central heat absorber arranged on the tower top by adopting a large number of directional reflectors, so that the sunlight generates higher temperature, then the sunlight is subjected to heat accumulation and energy storage by working media, and the high-temperature working media converts heat energy into electric energy in a power generation mode by a heat engine. The tower type power generation mainly comprises a condensation system, a heat receiving system, a heat storage system, a power generation system and the like.
The heat receiving system is a core system of tower power generation. The heat absorber is a core component of the heat receiving system, the heliostat focuses sunlight on the heat absorber, heats heat transfer working media in the heat absorber, and stores the heated working media in the heat storage part for subsequent use.
Research shows that in tower power generation, the heat absorption system accounts for about 7.73% of the cost of the whole power station, and is an important factor for determining the cost of the solar photo-thermal power station. Second, although the tower power generation system has high photo-thermal conversion efficiency, the loss of heat energy after conversion is important.
Therefore, how to provide a vacuum sleeve type solar heat absorber, which reduces the heat energy loss of working media and strengthens the heat transfer and heat storage process is a problem which needs to be solved by the person skilled in the art.
Disclosure of Invention
In view of the above, the present utility model provides a vacuum tube-in-tube solar heat absorber, which aims to solve the above-mentioned problems.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a vacuum tube-in-tube solar heat absorber comprising:
the device comprises a funnel-shaped base, wherein an annular cavity is arranged between the outer wall and the inner wall of the funnel-shaped base, the upper part of the annular cavity is open, the lower part of the annular cavity is closed, a working medium inlet is formed in the outer wall of the neck of the funnel-shaped base, and the working medium inlet is communicated with the annular cavity;
the heat absorption pipes are multiple, the upper ends of the heat absorption pipes corresponding to the annular cavities are fixed on the funnel-shaped base and are circumferentially arranged to form an annular shell with two through ends, and the cavities in the heat absorption pipes are communicated with the annular cavities;
the conveying long-neck funnel, the annular shell and the funnel base are coaxially fixed and combined into a complete pipe structure; the upper inner cavity of the conveying long-neck funnel is communicated with the upper ports of the heat absorption pipes, and the lower end of the neck of the conveying long-neck funnel penetrates through the inner cavity of the funnel-shaped base to be communicated with an external heat storage part and is tightly attached to the inner wall of the funnel-shaped base; the upper edge of the conveying long-neck funnel and the top surface of the annular shell are positioned on the same horizontal plane;
one end of the inner support is fixedly connected with the inner wall of the shell, and the other end of the inner support is fixedly connected with the outer wall of the conveying long-neck funnel;
the cover body, the lateral wall lower extreme of cover body with the outer wall lid of casing top closes, the cover body with reserve working medium circulation clearance between the casing top.
Through the technical scheme, by adopting the solar heat absorber provided by the utility model, working medium flows in through the working medium inlet, is transported into the tube of the heat absorption tube through the annular cavity of the funnel-shaped base for internal heating, and the heated working medium is transported to the upper end of the long-neck funnel and is input to the heat storage part which can be communicated with the long-neck funnel through the lower end of the long-neck funnel. The base and the conveying structure of the solar heat absorber are funnel-shaped, and the conveying long-neck funnel is used as a conveying pipeline, a heat absorption pipeline and the funnel-shaped base to form a sleeve structure, so that the structure is simplified, and the manufacturing cost of equipment is reduced.
Preferably, in the vacuum sleeve type solar heat absorber, the number of the inner struts is plural, the inner struts include a circular ring and a connecting rod vertically fixed with the circular ring, the neck of the conveying long-neck funnel is inserted into the middle part of the circular ring, one end of the connecting rod is fixed with the outer wall of the conveying long-neck funnel, and the other end of the connecting rod is fixed with the pipe wall of the heat absorbing pipe.
Preferably, in the vacuum sleeve type solar heat absorber, a plurality of connecting rods are arranged in a staggered manner up and down along the neck of the conveying long-neck funnel.
Preferably, in the vacuum tube-type solar heat absorber, an outer diameter of an upper end of the conveying long-neck funnel is the same as an inner diameter of the housing.
Preferably, in the vacuum tube-type solar heat absorber, the outer wall of the shell is provided with a heat absorbing coating, and the inner wall is provided with a heat insulating coating.
Preferably, in the vacuum sleeve type solar heat absorber, the cover body is made of a heat-insulating and high-temperature-resistant material.
Preferably, in the vacuum tube-type solar heat absorber, the plurality of heat absorbing tubes and the conveying long-neck funnel are made of stainless steel.
Preferably, in the vacuum sleeve type solar heat absorber, full welding is performed between pipe walls connected by a plurality of heat absorbing pipes, and the upper annular cavity and the lower annular cavity are subjected to seamless adhesion through holes corresponding to the shape adaptation of the heat absorbing pipes, so that a vacuum environment is formed between the conveying long-neck funnel and the shell. Heat loss of working medium can be further reduced.
Compared with the prior art, the vacuum sleeve type solar heat absorber has the advantages that the inner cavity of the heat absorbing pipe and the annular cavity of the funnel-shaped base form a working medium circulation channel, working medium enters from the working medium inlet and flows through the long-neck funnel for conveying after being heated to be input into the lower-stage heat storage part, the structure is simple, the manufacturing cost of the heat absorber is reduced, and heat loss of the working medium can be greatly reduced by adopting the vacuum type inner sealing structure.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a solar heat absorber provided by the present utility model;
FIG. 2 is a cross-sectional view of a solar heat absorber provided by the present utility model;
FIG. 3 is a cross-sectional view of the neck of the funnel base provided by the present utility model;
FIG. 4 is a cross-sectional view of the connecting part of the conveying long-necked funnel and the inner support provided by the utility model;
FIG. 5 is a cross-sectional view of a heat absorption tube arrangement provided by the present utility model;
fig. 6 is a flowchart of the operation of the heat sink provided by the present utility model.
Wherein:
1-a working medium inlet; 2-an annular cavity; 3-a funnel-shaped base; 4-a heat absorbing pipe; 5-internal support; 6-conveying a long-neck funnel; 7-a cover; 71-working fluid flow gap.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1 to 5, an embodiment of the present utility model discloses a vacuum tube-type solar heat absorber, comprising:
the device comprises a funnel-shaped base 3, wherein an annular cavity 2 is arranged between the outer wall and the inner wall of the funnel-shaped base 3, the upper part of the annular cavity 2 is opened, the lower part of the annular cavity is closed, a working medium inlet 1 is formed in the outer wall of the neck of the funnel-shaped base 3, and the working medium inlet 1 is communicated with the annular cavity 2;
the heat absorption pipes 4 are multiple in number, the upper ends of the heat absorption pipes 4 corresponding to the annular cavities 2 are fixed on the funnel-shaped base 3 and are circumferentially arranged to form annular shells with two through ends, and the cavities in the heat absorption pipes 4 are communicated with the annular cavities 2;
the conveying long-neck funnel 6, the annular shell and the funnel base 3 are coaxially fixed and combined into a complete tube structure; the upper inner cavity of the conveying long-neck funnel 6 is communicated with the upper ports of the heat absorption pipes 4, and the lower end of the neck part of the conveying long-neck funnel 6 penetrates through the inner cavity of the funnel-shaped base 3 to be communicated with an external heat storage part and is tightly attached to the inner wall of the funnel-shaped base 3; the upper edge of the conveying long-neck funnel 6 and the top surface of the shell are positioned on the same horizontal plane;
one end of the inner support 5 is fixedly connected with the inner wall of the shell, and the other end of the inner support 5 is fixedly connected with the outer wall of the conveying long-neck funnel 6;
the cover body 7, the lateral wall lower extreme of the cover body 7 and annular casing top outer wall lid are closed, reserve working medium circulation clearance 71 between the cover body 7 and the annular casing top.
In this embodiment, in order to prevent the working medium from overflowing from the top of the heat absorbing pipe after being heated, the cover 7 is made of a heat insulating and high temperature resistant material.
In this embodiment, in order to withstand the high temperature generated after the working medium is heated, the plurality of heat absorbing pipes 4 and the conveying long-neck funnel 6 are made of stainless steel.
In this embodiment, in order to further reduce heat loss of working medium, the pipe walls among the plurality of heat absorbing pipes 4 are connected in a full-welded manner, and the upper and lower annular cavities are adhered seamlessly by the holes with the shape adapted to the corresponding heat absorbing pipes, so that a vacuum environment is formed between the conveying long-neck funnel and the shell.
In order to further optimize above-mentioned technical scheme for carry long neck funnel can more convenient and fast fix inside annular casing, reduce the cost of manufacture, with the quantity of internal stay 5 set up to a plurality ofly, internal stay 5 include the ring and with the ring perpendicular fixed connecting rod, carry long neck funnel 6's neck to insert the ring middle part, the one end of connecting rod is fixed with the outer wall that carries long neck funnel 6, the other end is fixed with the pipe wall of absorber tube 4. The connecting rods are arranged in a staggered manner up and down along the neck of the conveying long-neck funnel.
In order to further optimize the technical scheme, the heat loss of working media is reduced, the solar heat is guaranteed to be fully absorbed, the outer wall of the shell is coated with the heat absorption coating, and the inner wall is coated with the heat insulation coating.
Example 2:
referring to fig. 6, the solar heat absorber of embodiment 1 is used for operation, and the neck of the transporting long-neck funnel 6 extending out of the funnel-shaped base 3 is connected with the heat storage part, comprising the following steps:
s1, a working medium (normal-temperature heat storage material) enters an annular cavity 2 in a funnel-shaped base 3 from a working medium inlet;
s2, the working medium flows through the annular cavity and enters the cavity in the heat absorption pipe for heating;
and S3, the heated working medium flows into a lower-stage heat storage part through a conveying long-neck funnel 6, and a heating cycle is completed.
The solar heat absorber provided by the utility model has a simple structure, adopts a vacuum closed environment, can effectively reduce heat loss of working media, and simultaneously has a simple structure and reduces manufacturing cost.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A vacuum tube-in-tube solar heat absorber, comprising:
the device comprises a funnel-shaped base (3), wherein an annular cavity (2) is arranged between the outer wall and the inner wall of the funnel-shaped base (3), the upper part of the annular cavity (2) is open, the lower part of the annular cavity is closed, a working medium inlet (1) is formed in the outer wall of the neck of the funnel-shaped base (3), and the working medium inlet (1) is communicated with the annular cavity (2);
the plurality of heat absorption pipes (4) are arranged, the plurality of heat absorption pipes (4) are fixed on the funnel-shaped base (3) corresponding to the upper ends of the annular cavities (2) and are circumferentially arranged to form annular shells with two through ends, and the cavities in the plurality of heat absorption pipes (4) are communicated with the annular cavities (2);
the conveying long-neck funnel (6), the conveying long-neck funnel (6) and the annular shell and the funnel base (3) are coaxially fixed and combined into a complete pipe structure; the upper inner cavity of the conveying long-neck funnel (6) is communicated with the upper ports of the heat absorption pipes (4), and the lower end of the neck of the conveying long-neck funnel (6) penetrates through the inner cavity of the funnel-shaped base (3) to be communicated with an external heat storage part and is tightly attached to the inner wall of the funnel-shaped base (3); the upper edge of the conveying long-neck funnel (6) and the top surface of the annular shell are positioned on the same horizontal plane;
one end of the inner support (5) is fixedly connected with the inner wall of the shell, and the other end of the inner support (5) is fixedly connected with the outer wall of the conveying long-neck funnel (6);
the cover body (7), the lateral wall lower extreme of cover body (7) with the outer wall lid of casing top closes, cover body (7) with reserve working medium circulation clearance (71) between the casing top.
2. The vacuum sleeve type solar heat absorber according to claim 1, wherein the number of the inner supports (5) is multiple, the inner supports (5) comprise a circular ring and a plurality of connecting rods vertically fixed with the circular ring, the neck of the conveying long-neck funnel (6) is inserted into the middle of the circular ring, one end of each connecting rod is fixedly connected with the outer wall of the conveying long-neck funnel (6), and the other end of each connecting rod is fixedly connected with the pipe wall of the heat absorbing pipe (4).
3. A vacuum jacketed solar heat absorber according to claim 2, wherein a plurality of said links are arranged in staggered relation up and down along the neck of said transfer long neck funnel (6).
4. A vacuum tube-in-tube solar heat absorber according to claim 1, characterized in that the outer diameter of the upper end of the delivery long-necked funnel (6) is the same as the inner diameter of the housing.
5. A vacuum tube-in-tube solar heat absorber according to claim 1, wherein the outer wall of the housing is provided with a heat absorbing coating and the inner wall is provided with a heat insulating coating.
6. A vacuum tube-in-tube solar heat absorber according to claim 1, characterized in that the cover (7) is made of a thermally insulating and high temperature resistant material.
7. A vacuum tube-in-tube solar heat absorber according to claim 1 wherein the plurality of absorber tubes (4) and the transfer long neck funnel (6) are both stainless steel.
8. A vacuum tube-in-tube solar heat absorber according to claim 1, characterized in that the tube walls to which the heat absorbing tubes (4) are connected are fully welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321513174.9U CN220206083U (en) | 2023-06-14 | 2023-06-14 | Vacuum sleeve type solar heat absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321513174.9U CN220206083U (en) | 2023-06-14 | 2023-06-14 | Vacuum sleeve type solar heat absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220206083U true CN220206083U (en) | 2023-12-19 |
Family
ID=89137522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321513174.9U Active CN220206083U (en) | 2023-06-14 | 2023-06-14 | Vacuum sleeve type solar heat absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220206083U (en) |
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2023
- 2023-06-14 CN CN202321513174.9U patent/CN220206083U/en active Active
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