Double-shaft tracking groove type solar thermal collector

Abstract

The invention discloses a double-shaft tracking groove type solar thermal collector, and relates to the technical field of solar thermal collectors. The double-shaft tracking groove type solar heat collector comprises a rotating unit installed on the ground, a fixing base fixed to the output end of the rotating unit, a modularized reflecting plate installed on the fixing base through an installation frame and used for reflecting sunlight, and a heat collecting pipe used for converting heat. A compensation assembly used for reducing heat loss and a power assembly used for assisting operation of the compensation assembly are arranged at the position of the reflecting plate, and the compensation assembly comprises a top plate which is installed on the side edge of the reflecting plate and used for shielding the heat collecting pipe to reduce the heat loss; the situation that heat in the heat collecting pipe is rapidly dissipated due to convection loss aggravated by strong wind in strong wind weather is avoided, meanwhile, the situation that heat conduction loss is increased due to the fact that rainwater directly drops on the surface of the heat collecting pipe is avoided, and heat convection loss and heat conduction loss are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of solar collectors, and specifically to a dual-axis tracking trough solar collector. Background Art

[0002] In the prior art, there is a method of concentrating solar energy at a short focal length by means of a high-efficiency concentrator while tracking the sun, and then heating the liquid medium in the solar collector. After that, heat conversion is carried out with an external power generation device. Among them, the heat absorption part of the trough collector is composed of a reflector and a vacuum heat pipe. The reflector reflects sunlight into the vacuum heat pipe, and the vacuum heat pipe transports the absorbed heat to provide clean and pollution-free energy for users. However, in order to ensure that the reflector is not blocked, the vacuum heat pipe is usually directly exposed to the outside. This leads to an increase in heat conduction loss and convection loss of the heat pipe under the action of rain and wind when used in island areas at low latitudes where the climate is changeable and there are many sudden thunderstorms and strong winds.

[0003] For example, a solar collector disclosed in the patent with publication number CN106288451B can increase the light-receiving area through multiple heat pipes. However, when used in the aforementioned island areas, the bottom reflector needs to track and refract sunlight and cannot effectively block it, resulting in an increase in heat conduction loss and convection loss under the action of rain and wind.

[0004] Therefore, a dual-axis tracking trough solar collector is proposed. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a dual-axis tracking trough solar collector, which solves the problem that when used in island areas at low latitudes, due to the changeable climate and many sudden thunderstorms and strong winds, the heat pipe is prone to increase heat conduction loss and convection loss under the action of rain and wind.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A dual-axis tracking trough solar collector includes a rotating unit installed on the ground, a fixed seat fixed to the output end of the rotating unit, a modular reflector installed on the fixed seat through a mounting frame for reflecting sunlight, and a heat pipe for converting heat. A compensation component for reducing heat loss and a power component for assisting the operation of the compensation component are provided at the reflector. The compensation component includes:

[0007] A top plate installed on the side of the reflector to block the heat pipe and reduce heat loss;

[0008] A side plate hinged to one end of the top plate through a hinge to block the heat pipe and reduce heat loss;

[0009] The water storage plate is fixed on the top plate to increase the temperature of the space where the heat collecting tube is located and reduce heat conduction loss.

[0010] Preferably, a turning shaft is fixed to the bottom of the reflector through a mounting frame. One end of the turning shaft is connected to a power motor, and the power motor is fixed on the fixed seat through a motor seat. A support plate is movably penetrated through the turning shaft, and an airbag is fixed to the bottom of the support plate. The airbag is communicated with a blower through a trachea.

[0011] Preferably, the compensation assembly further includes:

[0012] The water collecting box is located outside the reflector for converging rainwater. A water outlet pipe is communicated with the bottom of the water collecting box, and a fixing plate for support is fixed on the side wall of the water outlet pipe;

[0013] The impeller is penetrated through the water outlet pipe to generate power under the impact of rainwater. One end of the impeller is fixed with a rotating shaft, and one end of the rotating shaft is movably penetrated through the water outlet pipe.

[0014] Preferably, the compensation assembly further includes:

[0015] The gear is fixed to the other end of the rotating shaft for transmitting power, and a rack for the same transmission is engaged with the gear;

[0016] The limiting rod is slidably penetrated through the rack at one end for guiding and limiting, and the other end is fixed to the side wall of the airbag;

[0017] The first spring is fixed between the rack and the limiting rod to provide a downward elastic force for the rack;

[0018] The cross bar is fixed to the bottom of the rack for transmitting power. A vertical rod is fixed to the side wall of the cross bar, and a lower support rod is fixed to the top of the cross bar.

[0019] Preferably, a second spring is fixed to the top of the lower support rod, the other end of the second spring is fixed to an upper support rod, the top of the upper support rod abuts against the bottom of the top plate, and the side wall of the vertical rod is fixed to the fixed seat through a fixing rod.

[0020] Preferably, the compensation assembly further includes:

[0021] The upper sliding rod abuts against a side sliding rod at one end, and inclined surfaces adapted to each other are provided at the ends of the upper sliding rod and the side sliding rod close to each other;

[0022] The guide block is fixed with a support rod at one end, and one end of the side sliding rod is slidably penetrated through the guide block. One end of the support rod is fixed to the mounting frame;

[0023] The guide sleeve is fixed on the top plate and a sliding block is slidably inserted therein. A power push rod is fixed on the sliding block, and the other end of the power push rod is fixed inside the guide sleeve;

[0024] The tensioning rope has one end fixed on the sliding block and the other end slidably passing through a limiting block. The bottom of the limiting block is fixed on the side plate, and one end of the tensioning rope is fixed on the side plate.

[0025] Preferably, the power assembly includes:

[0026] The left connecting rod is fixed at one end of the sliding block, and a left magnet is fixed at one end of the left connecting rod;

[0027] The right magnet is magnetically connected to the left magnet, and a right connecting rod is fixed at one end of the right magnet.

[0028] The sliding rope has one end fixed on the left connecting rod or the right connecting rod and the other end slidably passing through the top plate.

[0029] Preferably, a refraction plate is fixed at one end of the sliding rope, a stop rod is slidably abutted on the sliding rope, one end of the stop rod is fixed on the top plate, a mounting seat is mounted on the side wall of the refraction plate through a mounting shaft, and a water storage plate is mounted on the refraction plate through the mounting seat.

[0030] Preferably, the side wall of the water storage plate is fixed on the top plate for storing water, and a light-transmitting plate is fixed on the side wall of the water storage plate. The light-transmitting plate is located below the refraction plate.

[0031] The present invention provides a two-axis tracking trough solar collector. Compared with the prior art, it has the following beneficial effects:

[0032] (1) For this two-axis tracking trough solar collector, the operation of the rotating unit can drive the entire solar heat collection unit to rotate, so that the reflector can always be perpendicular to the sunlight. At the same time, the reflector adopts a multi-row modular parabolic concentrating method, which is more convenient to install than the overall parabolic dish type, etc., improving the installation efficiency. The sunlight is concentrated on the heat collection tube through the reflector to heat the medium in the heat collection tube, and then the absorbed heat is transported out to provide clean and pollution-free energy for users. By controlling the power motor to start through the control system, the power motor drives the turning shaft to rotate, and the turning shaft drives the reflector and the heat collection tube to rotate synchronously, so that the reflector can rotate around the turning shaft and rotate around the rotating unit as the axis, ensuring that the reflector can track the sun's movement trajectory in all directions, increasing the heat collection duration and improving the heat collection efficiency.

[0033] (2) For this dual-axis tracking trough solar collector, when thunderstorms or strong winds occur, the drive reflector and the heat collecting pipe are lowered. At the same time, the reflector is adjusted to be parallel to the ground, reducing the windward area and wind resistance while the whole is lowered to the ground, thus better improving the wind resistance and making the protection measures more reliable. After the thunderstorm and strong wind weather, the drive reflector and the heat collecting pipe are moved up as a whole, and the angle of the reflector is adjusted through the power motor and the rotating unit to rotate it to the concentrating angle. When the reflector and the heat collecting pipe are lifted to the lowest and highest positions, they are automatically locked to improve safety. With the configuration of the lifting function, after the overall module is installed on the ground, it can reach the working height through the self-lifting method, reducing equipment such as cranes and reducing the installation process. When maintenance is required, the overall module can be lowered to the ground for maintenance and other operations, thus overcoming the problem that the original device requires a crane for maintenance and is not convenient for maintenance. By adopting a large disc-type power mechanism and a frame-type column, compared with the rotary reducer and the push rod of the same type of product, the stiffness and stability of the column are improved.

[0034] (3) For this dual-axis tracking trough solar collector, when it is installed on an island in a low-latitude area, due to climatic reasons, thunderstorms and strong winds come and go quickly. When passing through, there will be relatively large heat loss at the heat collecting pipe due to enhanced natural convection and heat conduction effects; when it rains, the two top plates on the same group of reflectors are closed to shield the heat collecting pipe. The top plates drive the side plates to flip synchronously. The side plates flip around the hinge as the axis, forming a semi-closed structure with the reflector and the top plates. When thunderstorms and strong winds pass through, more wind blows away from the outside of the side plates and the top plates, and less wind blows away from the heat collecting pipe, reducing the heat loss of the heat collecting pipe during thunderstorms and strong winds. After the thunderstorm and strong wind end, it is reset to the initial position; avoiding the situation where the convective loss intensified by strong winds in strong wind weather leads to the rapid dissipation of the heat in the heat collecting pipe, and at the same time avoiding the situation where rain directly drops on the surface of the heat collecting pipe resulting in an increase in heat conduction loss, effectively reducing the convective loss and heat conduction loss of heat.

[0035] (4) For this dual-axis tracking trough solar collector, when the top plate at the single group of reflector and heat collecting pipe is closed, it synchronously drives the guide sleeve to flip, making the left connecting rod and the right connecting rod combined into a whole. Subsequently, heat is released through the water storage plate while the rain and the air volume are reduced, enabling the temperature in the semi-closed space formed by the top plate, the side plate, and the reflector to slowly decrease, narrowing the temperature difference between the heat collecting pipe and the outside world, and effectively reducing the convective loss and heat conduction loss of heat; when the top plate... Figure 5After being reset to the shown position, sunlight shines on the reflector and is then reflected by the reflector to the heat collecting tube for heating. Part of the sunlight will be reflected to the refraction plate and the light-transmitting plate. At the same time, the refraction plate also refracts part of the sunlight into the light-transmitting plate, and the water in the water storage plate is heated through the light-transmitting plate to increase the temperature. When the top plate and the side plate are closed next time, heat preservation is carried out in the space where the heat collecting tube is located. Description of the Drawings

[0036] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0037] Figure 2 It is another perspective view of the overall structure of the present invention;

[0038] Figure 3 It is a structural diagram of the fan of the present invention;

[0039] Figure 4 It is a structural diagram of the power motor of the present invention;

[0040] Figure 5 It is a schematic diagram of the overall structure of a single set of shielding components of the present invention;

[0041] Figure 6 It is a structural diagram of the reflector of the present invention;

[0042] Figure 7 It is a sectional structural diagram of the water collecting box of the present invention;

[0043] Figure 8 It is an exploded view of the limiting rod of the present invention;

[0044] Figure 9 It is a partial structural diagram of the shielding component of the present invention;

[0045] Figure 10 It is a structural diagram of the support rod of the present invention;

[0046] Figure 11 It is an exploded view of the side sliding rod of the present invention;

[0047] Figure 12 It is another perspective view of the exploded side sliding rod of the present invention;

[0048] Figure 13 It is an exploded view of the limiting block of the present invention;

[0049] Figure 14 It is a combined state diagram of the left connecting rod and the right connecting rod of the present invention;

[0050] Figure 15 It is a structural diagram of the refraction plate of the present invention.

[0051] In the figure: 1. Rotary unit; 11. Fan; 12. Air pipe; 13. Airbag; 14. Support plate; 15. Fixed seat; 16. Rotating shaft; 17. Power motor; 18. Reflector; 19. Heat collecting pipe; 2. Water collecting box; 21. Water outlet pipe; 22. Fixed plate; 23. Impeller; 24. Rotating shaft; 25. Gear; 26. Rack; 27. Limit rod; 28. First spring; 29. Cross bar; 210. Vertical rod; 211. Lower support rod; 212. Upper support rod; 213. Fixed rod; 214. Second spring; 3. Upper sliding rod; 31. Side sliding rod; 32. Guide block; 33. Support rod; 34. Guide sleeve; 35. Power push rod; 36. Sliding block; 37. Tightening rope; 38. Limit block; 4. Left connecting rod; 41. Left magnet; 42. Right magnet; 43. Right connecting rod; 44. Sliding rope; 441. Stop rod; 45. Refraction plate; 46. Water storage plate; 47. Transparent plate; 5. Top plate; 51. Side plate. Detailed implementation mode

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0053] Please refer to Figures 1 to 15 , the present invention provides the following technical solutions:

[0054] Embodiment 1: A double-axis tracking trough-type solar collector, including a rotary unit 1 fixedly installed at the bottom on the ground, a fixed seat 15 fixedly installed at the output end of the rotary unit 1, and a modular reflector 18 installed on the fixed seat 15 through a mounting frame for reflecting sunlight and a heat collecting pipe 19 for converting heat. A rotating shaft 16 is fixedly installed at the bottom of the reflector 18 through a mounting frame. One end of the rotating shaft 16 is fixedly connected to the output end of a power motor 17 through a coupling. The power motor 17 is fixedly installed on the fixed seat 15 through a motor seat. Two support plates 14 are movably penetrated on the rotating shaft 16. The bottoms of the two support plates 14 are fixedly installed on the top of the same airbag 13. The airbag 13 is communicated with a fan 11 through an air pipe 12. The fan 11 is fixedly installed on the fixed seat 15 through a housing.

[0055] During use, the operation of the rotating unit 1 can drive the entire solar collector to rotate, enabling the reflector 18 to always be perpendicular to the sunlight. At the same time, the reflector 18 adopts a multi-row modular parabolic concentrating method, which is easier to install than the dish type with an overall parabolic surface, improving the installation efficiency. The sunlight is concentrated on the heat collecting pipe 19 through the reflector 18 to heat the medium in the heat collecting pipe 19, and then the absorbed heat is transported out to provide clean and pollution-free energy for users. By controlling the control system, the power motor 17 is started, and the power motor 17 drives the turning shaft 16 to rotate. The turning shaft 16 drives the reflector 18 and the heat collecting pipe 19 to rotate synchronously, enabling the reflector 18 to rotate around the turning shaft 16 and rotate around the rotating unit 1 as the axis, ensuring that the reflector 18 can track the sun's movement trajectory in all directions, increasing the heat collection duration, and improving the heat collection efficiency;

[0056] When thunderstorms or strong winds occur, the electromagnetic air valve installed on the airbag 13 is controlled to open through the control system, enabling the gas in the airbag 13 to be discharged evenly. The airbag 13 becomes deflated by discharging the gas, reducing the height of the support plate 14, thereby driving the reflector 18 and the heat collecting pipe 19 to descend. At the same time, the power motor 17 is controlled to start, and the reflector 18 and the heat collecting pipe 19 are driven to rotate through the turning shaft 16, making the reflector 18 parallel to the ground. While reducing the windward area and wind resistance, the whole is lowered to the ground, thus better improving the wind resistance and making the protection measures more reliable;

[0057] After thunderstorms and strong winds, the fan 11 is controlled to start through the control system. The fan 11 transports gas into the airbag 13 through the air pipe 12, causing the airbag 13 to expand. The airbag 13 drives the support plate 14 to move upward, and the support plate 14 drives the reflector 18 and the heat collecting pipe 19 to move upward as a whole. The angle of the reflector 18 is adjusted through the power motor 17 and the rotating unit 1 to rotate it to the concentrating angle. When the reflector 18 and the heat collecting pipe 19 are raised and lowered to the lowest and highest positions, they are automatically locked to improve safety;

[0058] It is configured with a lifting function. After the overall module is installed on the ground, it can reach the working height through self-lifting, reducing equipment such as cranes and reducing the installation process. When maintenance is required, the overall module can be lowered to the ground for maintenance and other operations, thus overcoming the problem that the original device required a crane for maintenance and was not convenient for maintenance. By adopting a large disc type rotating unit frame type column, compared with the rotary reducer and push rod of the same type of product, the stiffness and stability of the column are improved.

[0059] Embodiment 2. The technical solution of this embodiment different from that of Embodiment 1 includes: a compensation component for reducing heat loss is provided at the reflector 18. The compensation component includes: a water collecting box 2, a water outlet pipe 21, a fixing plate 22, an impeller 23, a rotating shaft 24, a gear 25, a rack 26, a limiting rod 27, a first spring 28, a cross bar 29, a vertical rod 210, a lower support rod 211, an upper support rod 212, a fixing rod 213, a second spring 214, an upper sliding rod 3, a side sliding rod 31, a guiding block 32, a support rod 33, a guiding sleeve 34, a power push rod 35, a sliding block 36, a tensioning rope 37, a limiting block 38, a top plate 5, and a side plate 51;

[0060] The water collecting box 2 is located outside the reflector 18 for converging rainwater. A water outlet pipe 21 is fixedly installed at the bottom of the water collecting box 2. The water outlet pipe 21 is communicated with the water collecting box 2. A fixing plate 22 for support is fixedly installed on the side wall of the water outlet pipe 21. The impeller 23 is arranged in the water outlet pipe 21 to generate power under the impact of rainwater. One end of the impeller 23 is fixedly installed with a rotating shaft 24, and one end of the rotating shaft 24 is movably arranged through the water outlet pipe 21;

[0061] The side wall of the gear 25 is fixedly installed at the other end of the rotating shaft 24 for transmitting power. A rack 26 for transmission is meshed with the gear 25. One end of the limiting rod 27 is slidably arranged in the rack 26 for guiding and limiting, and the other end is fixedly installed on the side wall of the airbag 13;

[0062] One end of the first spring 28 is fixedly installed in the rack 26, and the other end of the first spring 28 is fixedly installed on the side wall of the limiting rod 27. The first spring 28 provides a downward elastic force to the rack 26;

[0063] The top plate of the cross bar 29 is fixedly installed at the bottom of the rack 26 for transmitting power. A vertical rod 210 is fixedly installed on the side wall of the cross bar 29. A lower support rod 211 is fixedly installed at the top of the cross bar 29. A second spring 214 is fixedly installed at the top of the lower support rod 211. The other end of the second spring 214 is fixedly installed with an upper support rod 212. The top of the upper support rod 212 is slidably abutted against the bottom of the top plate 5. The side wall of the vertical rod 210 is fixedly installed on the fixed seat 15 through the fixing rod 213;

[0064] One end of the upper sliding rod 3 abuts against a side sliding rod 31. The ends of the upper sliding rod 3 and the side sliding rod 31 close to each other are both provided with adapted inclined surfaces. One end of the guiding block 32 is fixedly installed with a support rod 33. One end of the side sliding rod 31 is slidably arranged in the guiding block 32. One end of the support rod 33 is fixedly installed on the mounting frame;

[0065] One end of the guiding sleeve 34 is fixedly installed on the top plate 5 and a sliding block 36 is slidably arranged inside. A power push rod 35 is fixedly installed on the sliding block 36. The other end of the power push rod 35 is fixedly installed inside the guiding sleeve 34;

[0066] One end of the tension rope 37 is fixedly installed on the sliding block 36, and the other end slidably penetrates through a limit block 38. The bottom of the limit block 38 is fixedly installed on the side plate 51, and one end of the tension rope 37 is fixedly installed on the side plate 51;

[0067] The top plate 5 is installed on the sliding shaft through a bearing. The sliding shaft slidably penetrates through the support rod 33. The top plate 5 is located on the side of the reflector 18 to block the heat collecting pipe 19 and reduce heat loss;

[0068] One end of the side plate 51 is hinged to one end of the top plate 5 through a hinge to block the heat collecting pipe 19 and reduce heat loss;

[0069] One end of the water storage plate 46 is fixedly installed on the top plate 5 to increase the temperature of the space where the heat collecting pipe 19 is located and reduce heat conduction loss.

[0070] During use, when this solar collector is installed on an island in a low-latitude area, due to climatic reasons, thunderstorms and strong winds come and go quickly. When passing by, large heat losses occur at the heat collecting pipe 19 due to enhanced natural convection and heat conduction effects;

[0071] When it rains, the rainwater is collected by the water collecting box 2 and introduced into the water outlet pipe 21. It flows to the ground through the water outlet pipe 21. When the water flows in the water outlet pipe 21, it will impact the impeller 23 to make it rotate. The rotation of the impeller 23 drives the rotation of the rotating shaft 24. The rotating shaft 24 drives the rotation of the gear 25. Through the meshing of the gear 25 and the rack 26, the rack 26 moves. The rack 26 and the limit rod 27 are slidably matched, so that the rack 26 can only move linearly along the limit rod 27. The rack 26 drives the cross bar 29 to move. The cross bar 29 drives the lower support rod 211 to move through the vertical rod 210. The lower support rod 211 drives the upper support rod 212 to move, so that the upper support rod 212 can push the upper sliding rod 3 to move. The upper sliding rod 3 squeezes the side sliding rod 31 to move. One end of the upper sliding rod 3 and the side sliding rod 31 in contact with each other are both inclined planes. At the same time, the side sliding rod 31 and the guide block 32 are slidably matched, so that the side sliding rod 31 can only move linearly along the guide block 32. The support rod 33 provides a supporting force for the guide block 32, and the mounting frame of the reflector 18 provides a supporting force for the support rod 33;

[0072] When the side sliding rod 31 moves linearly along the guide block 32, the upper sliding rod 3 moves upward synchronously, so that the upper sliding rod 3 pushes the top plate 5 to move upward, and the side sliding rod 31 pushes the top plate 5 to flip sideways, so that the two top plates 5 on the same set of reflective plates 18 are closed to block the heat collecting tubes 19, and the top plate 5 drives the side plate 51 to flip synchronously, and the power push rod 35 drives the sliding block 36 to move synchronously, and the sliding block 36 and the guide sleeve 34 slide in cooperation, so that the sliding block 36 can only slide linearly along the guide sleeve 34, and the sliding block 36 drives The tension rope 37 moves, and the limit block 38 slides with the tension rope 37 to loosen the tension rope 37. The side panel 51 loses the tension of the tension rope 37 and flips with the hinge as the axis, forming a semi-enclosed structure with the reflector 18 and the top panel 5. The opening of the semi-enclosed structure is adjusted to the leeward side by rotating the unit 1, so that when thunderstorms and strong winds pass through, more wind is blown away from the outside of the side panel 51 and the top panel 5, and less wind is blown away from the heat collecting tube 19, thereby reducing the heat loss of the heat collecting tube 19 during thunderstorms and strong winds.

[0073] After the thunderstorm and strong wind are over, rainwater no longer flows into the water outlet pipe 21, and the rotating shaft 24 no longer obtains power, and the top plate 5 is moved to the top under the action of the spiral spring. Figure 1 The position shown is reset, and the power push rod 35 is controlled to Figure 13 The power push rod 35 drives the tension rope 37 to move, and the limit block 38 limits the tension rope 37, so that the tension rope 37 drives the side plate 51 to flip toward the side where the top plate 5 is located with the hinge as the axis, and then the top plate 5, the side plate 51 and other parts are reset downward to the position under the action of their own gravity. Figure 5 Position shown;

[0074] Avoid the situation in which the heat in the heat collecting tube 19 is rapidly dissipated due to the convection loss aggravated by the strong wind in windy weather, and avoid the situation in which the heat conduction loss is increased due to the rain dripping directly on the surface of the heat collecting tube 19, thereby effectively reducing the convection loss and heat conduction loss of heat;

[0075] In another embodiment different from the above-mentioned embodiment, the gear 25 no longer drives the rack 26 to move and directly drive the top plate 5 and the side plate 51 to flip and close. Instead, the gear 25 drives the rack 26 to move, and the rack 26 moves to control the hydraulic rod and the power push rod 35 to start, and then the hydraulic rod pushes the upper support rod 212 to move, so that the top plate 5 and the side plate 51 flip and close. At this time, the upper support rod 212 is installed on the output end of the hydraulic rod through a spring 28. When there is no more rainwater flowing in the outlet pipe 21, the gear 25 cannot provide the rack 26 with power to move, and the rack 26 is reset under the action of the spring 28. At this time, the hydraulic rod and the power push rod 35 are reset to the initial state;

[0076] When heat collection is not required, such as at night or on cloudy days, the top plate 5 and the side plates 51 can also be closed by the control system to reduce unnecessary energy loss and improve overall energy efficiency.

[0077] In another embodiment different from the above-mentioned embodiment: a compensation component for reducing heat loss and a power component for assisting the operation of the compensation component are arranged at the reflector 18, and the power component includes: a left connecting rod 4, a left magnet 41, a right magnet 42, a right connecting rod 43, a sliding rope 44, a refraction plate 45, and a light-transmitting plate 47;

[0078] One end of the left connecting rod 4 is fixedly mounted on one end of the sliding block 36 on one side, and a left magnet 41 is fixedly mounted on one end of the left connecting rod 4;

[0079] The side wall of the right magnet 42 is magnetically connected to a left magnet 41, one end of the right magnet 42 is fixedly mounted with a right connecting rod 43, one end of the right connecting rod 43 is fixedly mounted on one end of the sliding block 36 on the other side, one end of the sliding rope 44 is fixedly mounted on the left connecting rod 4 or the right connecting rod 43, and the other end is slidably inserted into the top plate 5, one end of the sliding rope 44 is fixedly mounted with a refraction plate 45, the sliding rope 44 slides against a baffle rod 441, one end of the baffle rod 441 is fixedly mounted on the top plate 5, two mounting seats are installed on the side wall of the refraction plate 45 through a mounting shaft, the refraction plate 45 is fixedly mounted on the water storage plate 46 through the mounting seat, the side wall of the water storage plate 46 is fixedly mounted on the top plate 5 for storing water, and a light-transmitting plate 47 is fixedly mounted on the side wall of the water storage plate 46, and the light-transmitting plate 47 is located below the refraction plate 45.

[0080] When in use, when the top plates 5 at the single set of reflectors 18 and heat collecting tubes 19 are closed, the guide sleeves 34 are synchronously driven to flip, and the left connecting rod 4 and the right connecting rod 43 are respectively driven to move through the guide sleeves 34 at the two top plates 5, so that when the two top plates 5 are closed, the left connecting rod 4 and the right connecting rod 43 are just in contact with each other, and at the same time, the left magnet 41 and the right magnet 42 are magnetically attracted together, so that the left connecting rod 4 and the right connecting rod 43 are combined into a whole. At this time, the power push rod 35 is started, and when the sliding block 36 is driven to move, the right connecting rod 43 can be synchronously driven to move through the left connecting rod 4, and the left connecting rod 4 and the right connecting rod 43 are synchronously driven to move. The rod 4 and the right connecting rod 43 respectively drive the corresponding sliding rope 44 to move, and the blocking rod 441 guides and limits the sliding rope 44, so that the sliding rope 44 reduces the tension applied to the refraction plate 45, so that the refraction plate 45 can be turned to the side where the light-transmitting plate 47 is located with the mounting seat as the axis under the action of the spiral spring, and the heat is released through the water storage plate 46 while the rain and wind volume are reduced, so that the temperature in the semi-enclosed space composed of the top plate 5, the side plate 51, and the reflective plate 18 can be slowly reduced, and the temperature difference between the heat collecting pipe 19 and the outside world is reduced, and the convection loss and heat conduction loss of heat are effectively reduced;

[0081] On the top plate 5 Figure 5During the process of resetting to the shown position, the left connecting rod 4 drives the right connecting rod 43 to move towards Figure 5 , Figure 13 , Figure 15 the initial position shown for resetting. By driving the corresponding sliding ropes 44 through the left connecting rod 4 and the right connecting rod 43 respectively, the sliding ropes 44 drive the refraction plate 45 to flip around the mounting base as the axis to Figure 15 the position shown. At this time, sunlight shines on the reflecting plate 18 and is then reflected by the reflecting plate 18 to the heat collecting tube 19 for heating. Part of the sunlight will be reflected to the refraction plate 45 and the light-transmitting plate 47. At the same time, the refraction plate 45 also refracts part of the sunlight into the light-transmitting plate 47, and the water in the water storage plate 46 is heated through the light-transmitting plate 47 to increase the temperature. When the top plate 5 and the side plate 51 are closed next time, heat is released and heat preservation is carried out in the space where the heat collecting tube 19 is located.

[0082] At the same time, the content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0083] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0084] Parallel: The parallel defined in this application is not limited to absolute parallel. This definition of parallel can be understood as substantially parallel, allowing for situations where it is not absolutely parallel due to factors such as assembly tolerances, design tolerances, and the influence of structural flatness. Small-angle range errors are allowed. For example, within the assembly error range of less than 10 degrees, it can be understood as a parallel relationship.

[0085] Vertical: The vertical defined in this application is not limited to the relationship of absolute perpendicular intersection (the included angle is 90 degrees). It allows for a relationship where it is not absolutely perpendicular intersection due to factors such as assembly tolerances, design tolerances, and the influence of structural flatness. Small-angle range errors are allowed. For example, within the assembly error range of 80 degrees to 100 degrees, it can be understood as a vertical relationship.

[0086] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dual-axis tracking trough solar thermal collector, comprising a rotating unit (1) mounted on the ground, a fixing base (15) fixed to the output end of the rotating unit (1), and a modular reflector (18) mounted on the fixing base (15) via a mounting frame for reflecting sunlight and a heat collecting tube (19) for converting heat, characterized in that: The reflector (18) is provided with a compensation component for reducing heat loss and a power component for assisting the operation of the compensation component, wherein the compensation component comprises: A top plate (5) is installed on the side of the reflector (18) to shield the heat collecting tube (19) to reduce heat loss; A side plate (51) is hinged to one end of the top plate (5) through a hinge and is used to shield the heat collecting tube (19) to reduce heat loss; The water storage plate (46) is fixed on the top plate (5) and is used to increase the temperature of the space where the heat collecting tube (19) is located and reduce the heat conduction loss.

2. A dual-axis tracking trough solar collector according to claim 1, characterized in that: A flip shaft (16) is fixed to the bottom of the reflecting plate (18) via a mounting frame, one end of the flip shaft (16) is connected to a power motor (17), the power motor (17) is fixed to a fixing seat (15) via a motor seat, a support plate (14) is movably provided on the flip shaft (16), an air bag (13) is fixed to the bottom of the support plate (14), and the air bag (13) is connected to a fan (11) via an air pipe (12).

3. A dual-axis tracking trough solar collector according to claim 1, characterized in that: The compensation component also includes: A water collecting box (2) is located outside the reflecting plate (18) and is used to collect rainwater. The bottom of the water collecting box (2) is connected to a water outlet pipe (21). A fixing plate (22) for support is fixed on the side wall of the water outlet pipe (21); An impeller (23) is inserted into the water outlet pipe (21) to generate power under the impact of rainwater. A rotating shaft (24) is fixed to one end of the impeller (23), and one end of the rotating shaft (24) is movably inserted into the water outlet pipe (21).

4. A dual-axis tracking trough solar collector according to claim 3, characterized in that: The compensation component also includes: A gear (25) is fixed to the other end of the rotating shaft (24) for transmitting power, and a rack (26) is meshed on the gear (25) for the same purpose; A limiting rod (27), one end of which is slidably inserted into the rack (26) for guiding and limiting, and the other end of which is fixed on the side wall of the airbag (13); Spring 1 (28), fixed between the rack (26) and the limiting rod (27) to provide a downward elastic force to the rack (26); A cross bar (29) is fixed at the bottom of the rack (26) for transmitting power. A vertical bar (210) is fixed on the side wall of the cross bar (29), and a lower support bar (211) is fixed on the top of the cross bar (29).

5. A dual-axis tracking trough solar collector according to claim 4, characterized in that: A second spring (214) is fixed to the top of the lower support rod (211), an upper support rod (212) is fixed to the other end of the second spring (214), the top of the upper support rod (212) abuts against the bottom of the top plate (5), and the side wall of the vertical rod (210) is fixed to the fixing seat (15) via a fixing rod (213).

6. A dual-axis tracking trough solar collector according to claim 1, characterized in that: The compensation component also includes: An upper sliding bar (3) has one end abutting against a side sliding bar (31), and the ends of the upper sliding bar (3) and the side sliding bar (31) that are close to each other are both provided with matching inclined surfaces; A guide block (32) is fixed with a support rod (33) at one end, one end of the side sliding rod (31) is slidably inserted into the guide block (32), and one end of the support rod (33) is fixed on the mounting frame; A guide sleeve (34) is fixed on the top plate (5) and has a sliding block (36) slidably penetrated therein, a power push rod (35) is fixed on the sliding block (36), and the other end of the power push rod (35) is fixed in the guide sleeve (34); A tension rope (37) has one end fixed on the sliding block (36) and the other end slidingly penetrates a limit block (38). The bottom of the limit block (38) is fixed on the side plate (51). One end of the tension rope (37) is fixed on the side plate (51).

7. The dual-axis tracking trough solar collector according to claim 1, characterized in that: The power assembly includes: A left connecting rod (4) is fixed to one end of the sliding block (36), and a left magnet (41) is fixed to one end of the left connecting rod (4); The right magnet (42) is magnetically connected to the left magnet (41), and a right connecting rod (43) is fixed to one end of the right magnet (42). A sliding rope (44) has one end fixed on the left connecting rod (4) or the right connecting rod (43), and the other end slidingly penetrates in the top plate (5).

8. A dual-axis tracking trough solar collector according to claim 7, characterized in that: A refraction plate (45) is fixed to one end of the sliding rope (44), a blocking rod (441) is slidably abutted on the sliding rope (44), one end of the blocking rod (441) is fixed to the top plate (5), a mounting seat is mounted on the side wall of the refraction plate (45) via a mounting shaft, and a water storage plate (46) is mounted on the refraction plate (45) via the mounting seat.

9. A dual-axis tracking trough solar collector according to claim 8, characterized in that: The side wall of the water storage plate (46) is fixed on the top plate (5) for storing water, and a light-transmitting plate (47) is fixed on the side wall of the water storage plate (46), and the light-transmitting plate (47) is located below the refraction plate (45).

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