CN219390107U - Heat collecting tube for secondary condenser and groove type heat collector thereof - Google Patents
Heat collecting tube for secondary condenser and groove type heat collector thereof Download PDFInfo
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- CN219390107U CN219390107U CN202320676821.1U CN202320676821U CN219390107U CN 219390107 U CN219390107 U CN 219390107U CN 202320676821 U CN202320676821 U CN 202320676821U CN 219390107 U CN219390107 U CN 219390107U
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- secondary condenser
- ball screw
- absorption tube
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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
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Abstract
The utility model discloses a heat collecting tube for a secondary condenser and a groove type heat collector thereof, belonging to the technical field of secondary condensers and aiming at the problems of lower condensing efficiency of the condenser and scaling in a heat exchanging tube, the heat collecting tube comprises a fixing frame, wherein a glass outer tube is fixed at the top of the fixing frame, a metal absorption tube is arranged in the glass outer tube, a counter-rotating combined rotor is arranged in the metal absorption tube, the secondary condenser is arranged at the middle position between the inner wall of the glass outer tube and the outer wall of the metal absorption tube, the section of the secondary condenser is in a double-parabolic symmetrical structure, a plurality of brackets are fixed on the secondary condenser along the axis direction, and the other ends of the brackets are fixed with the inner wall of the glass outer tube; the utility model leads the light rays in three directions to be approximately and evenly distributed on the heat collecting tube, improves the condensation ratio of the absorption tube, increases the receiving angle of sunlight, reduces the precision requirement of the tracking device to a certain extent, and improves the heat flow density distribution of the absorption tube.
Description
Technical Field
The utility model belongs to the technical field of secondary concentrators, and particularly relates to a heat collecting tube for a secondary concentrator and a groove-type heat collector thereof.
Background
Because of the energy crisis, people are forced to develop clean new energy, the application of natural illumination energy is a popular topic in the world, the trough type solar thermal power generation technology is the solar thermal power generation technology which has the widest commercial application and the most stable operation in the world, a parabolic trough type collector is adopted to reflect and focus sunlight on a high-temperature solar heat collecting tube positioned on a focal line of the solar thermal power generation technology, fluid in a heating tube is used for realizing the conversion of solar energy and heat energy, the trough type collector is used as a key component for converting light energy into heat energy in a trough type solar power generation system, the photo-thermal conversion efficiency directly determines the power generation efficiency of the system, and the improvement of the opening width of the trough type collector can not only obviously reduce the system cost, but also has the possibility of improving the light concentration ratio according to the principle of the trough type collector.
In the practical production process of the trough type heat collector in the prior art, due to the limitation of process conditions, the heat exchanger is difficult to ensure to have high performance in design, the problem of scaling on the heat exchange surface is gradually highlighted along with the extension of service time, the damage caused by the scaling to the heat exchanger is very obvious, because the thickness of the pipe wall is increased in an intangible way due to the deposition of the scaling, a layer of scaling heat resistance is formed on the heat exchange surface, the heat exchange capacity is further reduced, the flow passage in the pipe is narrowed due to the scaling, the flow resistance of fluid is increased, the pump power consumption is increased, and even the requirement for enhancing heat transfer in heat exchange equipment is met in serious cases.
Therefore, a heat collecting tube for a secondary condenser and a groove type heat collector thereof are needed, and the problems of low condensing efficiency of the condenser and scaling in the heat exchanging tube in the prior art are solved.
Disclosure of Invention
The utility model aims to provide a heat collecting tube for a secondary condenser and a groove type heat collector thereof, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a heat collecting tube for secondary spotlight and slot type heat collector thereof, includes the mount, the top of mount is fixed with the glass outer tube, the inside of glass outer tube is provided with the metal absorption tube, the inside different spin to combination rotor that is provided with of metal absorption tube, the secondary spotlight ware is installed to the intermediate position department of glass outer tube inner wall and metal absorption tube outer wall, the cross-section of secondary spotlight ware is double parabolic symmetrical structure setting, the secondary spotlight ware is fixed with a plurality of supports along the axis direction, and is a plurality of the other end of support is fixed with the inner wall of glass outer tube mutually, the surface fixation of mount bottom has U type spotlight groove, the bottom of U type spotlight groove is provided with the box, the bottom of box is provided with the bottom, the position department that the box bottom is located the bottom top is provided with the engine, the output of engine is fixed with the surface of bottom mutually, the box top is fixed with ball screw mechanism.
In the scheme, the U-shaped light gathering groove comprises a reflector, a wind speed sensor, a photoelectric sensor and an inclination sensor, wherein the surface of the reflector is attached to the inner surface of the U-shaped light gathering groove, the wind speed sensor is installed on one side of the surface of the U-shaped light gathering groove, the inclination sensor is installed at the middle position of the surface of the U-shaped light gathering groove, and the photoelectric sensor is installed on the other side of the surface of the U-shaped light gathering groove.
It is further worth to say that the metal absorption tube is arranged in a circular tube shape, a selective coating is smeared on the outer surface of the metal absorption tube, and the center of the metal absorption tube is located on the focal line of the U-shaped concentrating groove reflector.
The different-rotation-direction combined rotor is composed of a left-rotation spiral double-blade rotor and a right-rotation spiral double-blade rotor.
As a preferred embodiment, the center of the secondary condenser and the center of the metal absorption tube are positioned on the same vertical line, the secondary condenser is positioned at the top position of the absorption tube, the secondary condenser is formed by transparent glass material components, the inner surface of the secondary condenser is coated with a mirror aluminum layer, and the surface of the bottom of the secondary condenser is coated with an absorption coating.
As a preferred implementation mode, the ball screw mechanism comprises a rotating shaft seat, an automatic light tracking controller, a ball screw nut, a ball screw, a coupler, a height angle adjusting motor, a solar cell panel sensor and a motor controller, wherein the surface of the bottom of the rotating shaft seat is fixed with the surface of a box body, the automatic light tracking controller is fixed at the position, close to the rotating shaft seat, of the surface of the top of the box body, the ball screw is fixed at the middle position of the surface of the top of the box body, the ball screw nut is slidably arranged on the surface of the ball screw, the height angle adjusting motor is fixed at the position, close to the height angle adjusting motor, of the surface of the top of the box body, the coupler is fixed at the position, close to one end of the ball screw, of the surface of the top of the box body, and the motor controller is fixed at the position, close to one side of the solar cell panel sensor.
As a preferable implementation mode, the surface of the ball screw nut is fixedly provided with a fixing buckle, the surface of the bottom of the U-shaped light gathering groove is fixedly provided with a supporting rod, and the ball screw mechanism is connected with the U-shaped light gathering groove through the supporting rod and the fixing buckle.
Compared with the prior art, the heat collecting tube for the secondary condenser and the groove type heat collector thereof provided by the utility model at least have the following beneficial effects:
(1) The light is focused on two sides of the absorption tube through the U-shaped light focusing grooves, part of the light overflowing from the focal line of the absorption tube is focused on the upper part of the absorption tube again through the refraction of the secondary condenser, so that the light in three directions is approximately uniformly distributed on the heat collecting tube, the light focusing ratio of the absorption tube is improved, the receiving angle of sunlight is increased, the precision requirement of the tracking device is reduced to a certain extent, and the heat flow density distribution of the absorption tube is improved.
(2) The rotation of the different-rotation-direction combined rotor is driven by the flow of fluid in the absorption tube, the larger the number of rotors with the same distance is, the larger the rotation consumption energy is, so that the fluid flow is slowed down, the integral heat exchange efficiency is influenced, the comprehensive efficiency of the space ratio is highest, the different-rotation-direction combined rotor generates strong disturbance in opposite directions on the fluid in the absorption tube, the fluid is converted into complex flow mainly in spiral flow from laminar flow, the mass exchange of the central fluid and the tube wall fluid is enhanced, the boundary layer is damaged, the heat exchange efficiency in the absorption tube is improved, the dirt growth condition is damaged, and the dirt inhibition effect on the absorption tube is realized.
Drawings
FIG. 1 is a schematic perspective view of the overall structure of the present utility model;
FIG. 2 is a schematic perspective view of a partial structure of the present utility model;
FIG. 3 is a schematic perspective view of a rotor assembly with different rotational directions according to the present utility model;
FIG. 4 is a schematic perspective view of a secondary condenser according to the present utility model;
fig. 5 is a schematic perspective view of a U-shaped light collecting tank according to the present utility model.
In the figure: 1. a fixing frame; 2. a glass outer tube; 3. a metal absorption tube; 4. a combined rotor with different rotation directions; 41. left-handed helical double-bladed; 42. right-handed helical double-bladed rotor; 5. a secondary condenser; 51. a mirror aluminum layer; 52. an absorbing coating; 6. a bracket; 7. a U-shaped light gathering groove; 71. a reflective mirror; 72. a wind speed sensor; 73. a photoelectric sensor; 74. an inclination sensor; 8. a ball screw mechanism; 81. a rotating shaft seat; 82. an automatic light tracking controller; 83. a ball screw nut; 84. a ball screw; 85. a coupling; 86. a height angle adjusting motor; 87. a solar panel sensor; 88. a motor controller; 9. a support rod; 10. a fixing buckle; 11. a case; 12. a bottom cover; 13. an engine.
Detailed Description
The utility model is further described below with reference to examples.
Referring to fig. 1-5, the utility model provides a heat collecting tube for a secondary condenser and a groove type heat collector thereof, which comprises a fixing frame 1, wherein a glass outer tube 2 is fixed at the top of the fixing frame 1, a metal absorption tube 3 is arranged in the glass outer tube 2, a counter-rotating combined rotor 4 is arranged in the metal absorption tube 3, a secondary condenser 5 is arranged at the middle position of the inner wall of the glass outer tube 2 and the outer wall of the metal absorption tube 3, the section of the secondary condenser 5 is arranged in a double parabolic symmetrical structure, a plurality of brackets 6 are fixed on the secondary condenser 5 along the axial direction, the other ends of the brackets 6 are fixed with the inner wall of the glass outer tube 2, a U-shaped condensing groove 7 is fixed on the surface of the bottom of the fixing frame 1, a box 11 is arranged at the bottom of the U-shaped condensing groove 7, a bottom cover 12 is arranged at the bottom of the box 11, an engine 13 is arranged at the position of the bottom of the box 11 at the top of the bottom cover 12, the output end of the engine 13 is fixed with the surface of the bottom cover 12, and a ball screw mechanism 8 is fixed at the top of the box 11.
Further, as shown in fig. 5, it is worth specifically describing that the U-shaped light-gathering tank 7 includes a reflector 71, a wind speed sensor 72, a photoelectric sensor 73 and an inclination sensor 74, the surface of the reflector 71 is attached to the inner surface of the U-shaped light-gathering tank 7, the wind speed sensor 72 is installed on one side of the surface of the U-shaped light-gathering tank 7, the inclination sensor 74 is installed at the middle position of the surface of the U-shaped light-gathering tank 7, the photoelectric sensor 73 is installed on the other side of the surface of the U-shaped light-gathering tank 7, and the ratio of the opening width of the U-shaped light-gathering tank 7 to the equivalent diameter of the metal absorbing tube 3 is greater than 80.
Further, as shown in fig. 1, it is worth specifically explaining that the metal absorption tube 3 is provided in a circular tube shape, the outer surface of the metal absorption tube 3 is coated with a selective coating, and the center of the metal absorption tube 3 is located on the focal line of the reflective mirror 71 of the U-shaped light gathering groove 7.
Further, as shown in fig. 3, it is worth specifically explaining that the combined rotor 4 with different rotation directions is composed of a rotor with left-handed spiral double blades 41 and a rotor with right-handed spiral double blades 42, the rotor with left-handed spiral double blades 41 and the rotor with right-handed spiral double blades are connected end to end in sequence according to a pitch ratio of 3 and are placed in the absorption tube 3, the diameter of the rotor with spiral double blades is 22mm, the lead is 200mm, and the axial length is 50m. In order to ensure that inlet and outlet fluids can develop uniformly, two hollow pipe sections with the length of about the mixing units are reserved at the inlet and outlet.
As further shown in fig. 1 and 4, it is worth specifically describing that the center of the secondary condenser 5 and the center of the metal absorption tube 3 are located on the same vertical line, the secondary condenser 5 is located at the top position of the absorption tube 3, the secondary condenser 5 is formed by transparent glass material members, the inner surface of the secondary condenser 5 is coated with a mirror aluminum layer 51, the surface of the bottom of the secondary condenser 5 is coated with an absorption coating 52, and the mirror aluminum layer 51 has a certain reflectivity and is resistant to high temperature.
Further, as shown in fig. 1 and 2, it is worth specifically describing that the ball screw mechanism 8 includes a rotating shaft seat 81, an automatic light tracking controller 82, a ball screw nut 83, a ball screw 84, a coupling 85, a height angle adjusting motor 86, a solar panel sensor 87 and a motor controller 88, the surface of the bottom of the rotating shaft seat 81 is fixed with the surface of the box 11, the automatic light tracking controller 82 is fixed at the position of the surface of the top of the box near the rotating shaft seat 81, the ball screw 84 is fixed at the middle position of the top surface of the box 11, the ball screw nut 83 is slidably provided on the surface of the ball screw 84, the height angle adjusting motor 86 is fixed at the position of the top surface of the box 11 near the ball screw 84, the coupling 85 is fixed at the position of the top surface of the box 11 near one end of the ball screw 84, and the motor controller 88 is fixed at the position of one side of the top surface of the box 11 near the solar panel sensor 87.
The scheme comprises the following working processes: in the actual use process, the wind speed sensor 72, the photoelectric sensor 73 and the inclination angle sensor 74 on the automatic tracking system respectively transmit electric signals to the automatic light tracking controller 82 and the solar panel sensor 87 according to different wind speed, light intensity and inclination angles, the automatic light tracking controller 82 and the solar panel sensor 87 receive the electric signals and feed back to the altitude angle adjusting motor 86 for rotation, the altitude angle adjusting motor is continuously debugged, the trough type heat collector is opposite to the sun, the glass outer tube 2 of the heat collecting tube is sleeved outside the metal absorbing tube 3, a selective coating is coated on the metal absorbing tube 3, a vacuum layer is arranged between the glass outer tube 2 and the metal absorbing tube 3, a secondary condenser 5 is arranged in the vacuum layer, the U-shaped light condensing groove 7 focuses light on two sides of the metal absorbing tube 3, partial light overflowing out of the focal line of the absorption tube is focused on the upper part of the metal absorbing tube 3 again through refraction of the secondary condenser 5, the light rays in three directions are approximately and evenly distributed on the heat collecting tube, the condensation ratio of the absorption tube is improved, the receiving angle of sunlight is increased, the precision requirement of a tracking device is reduced to a certain extent, the heat flux density distribution of the metal absorption tube 3 is improved, the outer surface of the secondary condenser 5 is coated with a selective coating, solar energy is directly absorbed, the temperature of the secondary condenser is improved, the radiation temperature difference between the secondary condenser 5 and the metal absorption tube 3 is reduced, the outward radiation heat dissipation loss of the metal absorption tube 3 is reduced, the rotation of the different-rotation combined rotor 4 is driven by the flow of fluid in the metal absorption tube 3, the more the rotor quantity with the same distance is at a smaller distance, the larger the rotation consumption energy is, the fluid flow is slowed down, the integral heat exchange efficiency is influenced, the comprehensive efficiency of the space ratio is the highest, the different-rotation-direction combined rotor 4 is formed by sequentially connecting a left-rotation spiral double-blade rotor 41 and a right-rotation spiral double-blade rotor 42 end to end according to a pitch ratio of 3 and is arranged in an absorption tube, the diameter of the spiral double-blade rotor is 22mm, the lead is 200mm, and the axial length is 50m.
The working process can be as follows: the light is focused on two sides of the absorption tube through the U-shaped light focusing grooves, part of the light overflowing from the focal line of the absorption tube is focused on the upper part of the absorption tube again through refraction of the secondary light collector, so that the light in three directions is approximately and uniformly distributed on the heat collecting tube, the light focusing ratio of the absorption tube is improved, the receiving angle of sunlight is increased, the precision requirement of a tracking device is reduced to a certain extent, the heat flux density distribution of the absorption tube is improved, the rotation of the different-rotation combined rotor is driven by the flow of fluid in the absorption tube, the more the number of rotors at the same distance is in small space, the greater the rotation consumption energy is, the fluid flow is slowed down, the overall heat exchange efficiency is influenced, the comprehensive efficiency of the space ratio is highest, the different-rotation combined rotor generates strong disturbance in opposite directions on the fluid in the absorption tube, the fluid is converted into complex flow mainly in spiral flow from laminar flow, the mass exchange of central fluid and tube wall fluid is enhanced, the boundary layer is destroyed, the heat exchange efficiency in the tube is improved, the scale growth conditions are destroyed, and the scale inhibition effect on the absorption tube is realized.
Further, as shown in fig. 1 and 2, it is worth specifically explaining that the surface of the ball screw nut 83 is fixed with a fixing buckle 10, the surface of the bottom of the U-shaped light focusing groove 7 is fixed with a supporting rod 9, and the ball screw mechanism 8 is connected with the U-shaped light focusing groove 7 through the supporting rod 9 and the fixing buckle 10.
To sum up: the light is focused on two sides of the absorption tube through the U-shaped light focusing grooves, part of the light overflowing from the focal line of the absorption tube is focused on the upper part of the absorption tube again through refraction of the secondary light collector, so that the light in three directions is approximately and uniformly distributed on the heat collecting tube, the light focusing ratio of the absorption tube is improved, the receiving angle of sunlight is increased, the precision requirement of a tracking device is reduced to a certain extent, the heat flux density distribution of the absorption tube is improved, the rotation of the different-rotation combined rotor is driven by the flow of fluid in the absorption tube, the more the number of rotors at the same distance is in small space, the greater the rotation consumption energy is, the fluid flow is slowed down, the overall heat exchange efficiency is influenced, the comprehensive efficiency of the space ratio is highest, the different-rotation combined rotor generates strong disturbance in opposite directions on the fluid in the absorption tube, the fluid is converted into complex flow mainly in spiral flow from laminar flow, the mass exchange of central fluid and tube wall fluid is enhanced, the boundary layer is destroyed, the heat exchange efficiency in the tube is improved, the scale growth conditions are destroyed, and the scale inhibition effect on the absorption tube is realized.
Claims (7)
1. The utility model provides a heat collecting tube for secondary spotlight and trough collector thereof, includes mount (1), its characterized in that, the top of mount (1) is fixed with glass outer tube (2), the inside of glass outer tube (2) is provided with metal absorption tube (3), the inside different spin to combination rotor (4) that is provided with of metal absorption tube (3), secondary spotlight ware (5) are installed in intermediate position department of glass outer tube (2) inner wall and metal absorption tube (3) outer wall, the cross-section of secondary spotlight ware (5) is double parabolic symmetrical structure setting, secondary spotlight ware (5) are fixed with a plurality of supports (6) along the axis direction, a plurality of the other end of support (6) is fixed with the inner wall of glass outer tube (2) mutually, the surface mounting of mount (1) bottom has U type spotlight groove (7), the bottom of U type spotlight groove (7) is provided with box (11), the bottom of box (11) is provided with bottom (12), the position department that box (11) bottom is located bottom (12) top is provided with bottom (13), output mechanism (13) are fixed with top lead screw (8) mutually.
2. The heat collecting tube for a secondary condenser and a trough type heat collector thereof according to claim 1, wherein: the U-shaped light gathering groove (7) comprises a reflecting mirror (71), a wind speed sensor (72), a photoelectric sensor (73) and an inclination sensor (74), wherein the surface of the reflecting mirror (71) is attached to the inner surface of the U-shaped light gathering groove (7), the wind speed sensor (72) is installed on one side of the surface of the U-shaped light gathering groove (7), the inclination sensor (74) is installed at the middle position of the surface of the U-shaped light gathering groove (7), and the photoelectric sensor (73) is installed on the other side of the surface of the U-shaped light gathering groove (7).
3. The heat collecting tube for a secondary condenser and a trough type heat collector thereof according to claim 2, wherein: the metal absorption tube (3) is arranged in a circular tube shape, a selective coating is smeared on the outer surface of the metal absorption tube (3), and the center of the metal absorption tube (3) is positioned on the focal line of the U-shaped light gathering groove (7) reflector (71).
4. The heat collecting tube for a secondary condenser and a trough type heat collector thereof according to claim 1, wherein: the counter-rotating combined rotor (4) is composed of a left-handed spiral double-blade rotor (41) and a right-handed spiral double-blade rotor (42).
5. The heat collecting tube for a secondary condenser and a trough type heat collector thereof according to claim 1, wherein: the center of the secondary condenser (5) and the center of the metal absorption tube (3) are positioned on the same vertical line, the secondary condenser (5) is positioned at the top position of the metal absorption tube (3), the secondary condenser (5) is formed by transparent glass material components, a mirror aluminum layer (51) is smeared on the inner surface of the secondary condenser (5), and an absorption coating (52) is smeared on the surface of the bottom of the secondary condenser (5).
6. The heat collecting tube for a secondary condenser and a trough type heat collector thereof according to claim 5, wherein: the ball screw mechanism (8) comprises a rotating shaft seat (81), an automatic light tracking controller (82), a ball screw nut (83), a ball screw (84), a coupler (85), a height angle adjusting motor (86), a solar cell panel sensor (87) and a motor controller (88), wherein the surface of the bottom of the rotating shaft seat (81) is fixed with the surface of the box body (11), the automatic light tracking controller (82) is fixed at the position, close to the rotating shaft seat (81), of the top surface of the box body (11), the ball screw (84) is fixed at the middle position of the top surface of the box body (11), the ball screw nut (83) is arranged on the surface of the ball screw (84) in a sliding mode, the height angle adjusting motor (86) is fixed at the position, close to the height angle adjusting motor (86), the coupler (85) is fixed at the position, close to the top surface of the box body (11), of the top surface of the box body (11), the solar cell panel sensor (87) is fixed at the position, of one end of the ball screw (84), and the solar cell panel sensor (87) is fixed at the position, of the top surface of the box body (11).
7. The heat collecting tube for a secondary condenser and a trough type heat collector thereof according to claim 6, wherein: the surface fixing of ball screw nut (83) has fixed buckle (10), the surface fixing of U type spotlight groove (7) bottom has bracing piece (9), ball screw mechanism (8) are connected with U type spotlight groove (7) through bracing piece (9) and fixed buckle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320676821.1U CN219390107U (en) | 2023-03-31 | 2023-03-31 | Heat collecting tube for secondary condenser and groove type heat collector thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320676821.1U CN219390107U (en) | 2023-03-31 | 2023-03-31 | Heat collecting tube for secondary condenser and groove type heat collector thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219390107U true CN219390107U (en) | 2023-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320676821.1U Active CN219390107U (en) | 2023-03-31 | 2023-03-31 | Heat collecting tube for secondary condenser and groove type heat collector thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219390107U (en) |
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2023
- 2023-03-31 CN CN202320676821.1U patent/CN219390107U/en active Active
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