Reflector seasonal adjustment type concentrating heat collecting device

Abstract

The invention discloses a seasonally adjustable reflector light-collecting device, which comprises: a main reflector, a rotating rod module, a reflector support adjustment module, and a receiver module; the rotating rod module comprises a support rod, a positioning crossbar, a rotating shaft, a rotating rod, a receiver fixing frame, a counterweight, and a power device; the reflector support adjustment module comprises a rotating frame, an angle adjustment fixing device, and an adjustable reflector support frame; the upper end of the rotating frame is connected to the positioning crossbar, and the rotating frame can rotate around the positioning crossbar, and a greenhouse is arranged outside the main reflector, the rotating rod module, the reflector support adjustment module, and the receiver module. The present application has the advantages of few rotating parts, high solar energy utilization rate per unit area, excellent light-collecting effect, good wind resistance, high device stability, low construction and maintenance cost, and light weight.

Description

Technical Field

[0001] The invention relates to a solar energy heat collecting device, in particular to a reflector seasonally adjustable light collecting and concentrating heat collecting device, belonging to the technical field of solar energy utilization. Background Art

[0002] In order to convert solar energy into higher-quality thermal energy, it is necessary to obtain a higher temperature working fluid through focusing methods. Focusing methods include line focusing (trough type, linear Fresnel type) and point focusing methods (tower type, dish type). Among them, the line focusing method has been more widely promoted and applied due to its low cost and wide application range.

[0003] The current line focusing method still has the following shortcomings:

[0004] 1) The construction cost of the solar collector is relatively high. For example, the cost of the trough collector is about 5.2 yuan / W, and the cost of the linear Fresnel collector is about 4.5 yuan / W. Compared with traditional and other energy sources, the advantages are not obvious. 2) The maintenance cost is high. First, the reflector is exposed to the air for a long time, and dust and fallen leaves will affect the reflective effect. It is troublesome to clean the reflector. At the same time, the reflective rate of the reflector will decay quickly due to the influence of wind, rain and dust, and the life of the device is relatively short. Second, there are a large number of rotating parts, the structure is complex and the failure rate is high. 3) The utilization rate of ground solar energy per unit area is low. Because of the rotation of the reflector, in order to avoid mutual shading, a certain distance needs to be left between the reflector arrays. Considering the existence of the distance, the optical loss of the collector during the operation of the whole year and the shading between the reflectors, the utilization rate of ground solar energy per unit area of ​​the trough collector and the linear Fresnel collector is only about 55% and 65%. In addition, the trough collector has the disadvantages of heavy device, high wind resistance and tracking accuracy, and the linear Fresnel collector has the disadvantages of low concentration ratio. The above problems limit the further promotion and application of solar energy focusing devices and the utilization of solar medium and high temperature heat. Summary of the invention

[0005] Technical problem: The purpose of the present invention is to overcome the defects of the above-mentioned existing linear focusing solar collectors, and to provide a linear focusing solar collector with seasonal adjustment of the reflector, low cost, good focusing effect and high solar energy utilization rate. It has low investment cost, high utilization rate per unit area, good wind resistance and high device stability, and at the same time has the advantages of light weight and low construction and maintenance costs.

[0006] Technical solution: In order to solve the above technical problems, the present application proposes a seasonally adjustable reflector concentrating and collecting device, which includes a main reflector, a rotating rod module, a reflector support and adjustment module, and a receiver module; the upper surface of the main reflector is a reflective surface, and the reflective surface is a downwardly concave arc surface, so that the reflective surface forms a reflective groove, and the reflective groove extends along an axial direction, and the main reflector is a fixed structure; the rotating rod module includes a support rod, a positioning cross rod, a rotating shaft, a rotating rod, a receiver fixing frame, a counterweight, and a power device, the positioning cross rod is fixed on the support rod, and the lower end of the support rod is fixed on the ground, the rotating shaft is coaxially connected to the positioning cross rod and can rotate relative to the positioning cross rod, the middle position of the rotating rod is fixedly connected to the rotating shaft, and the two ends of the rotating rod are respectively connected The receiver fixing frame and the counterweight block, the rotating shaft is fixedly connected to the power device, the power device drives the rotating shaft and the rotating rod to rotate, and the middle position of the support rod is fixedly provided with a positioning bolt; the reflector support and adjustment module includes a rotating frame, an angle adjustment fixing device, and an adjustable reflector support frame. The upper end of the rotating frame is connected to the positioning cross bar, the rotating frame can rotate around the positioning cross bar, the angle adjustment fixing device is fixedly connected to the middle position of the rotating frame, the angle adjustment fixing device is connected to the rotating rod module through the positioning bolt, the adjustable reflector support frame is fixedly connected to the lower end of the rotating frame, and the adjustable reflector support frame supports and fixes the main reflector; the receiver module includes a straight-through vacuum collector tube, and the straight-through vacuum collector tube is fixedly installed on the receiver fixing frame.

[0007] 1. The smaller the angle of the incident light deviating from the parabola axis, the better the focusing effect after reflection; 2. During the lighting period, the north-south elevation angle of sunlight (the collector is placed in the east-west direction, and this angle is the incident angle of the collector) varies within a range of about ±40° in a year; 3. The distribution area of ​​the north-south elevation angle is related to the season, and the variation range in each season is generally less than ±20°. This application is mainly based on the inventions and creations made on the above principles to solve the problems existing in the existing line focusing collectors.

[0008] The present application has few rotating parts and low tracking accuracy requirements, which can reduce the investment costs of rotating equipment and control equipment; the solar energy utilization rate per unit area is high (can reach 95%), the focusing spot is small, and the solar energy can be fully utilized; the wind resistance and device stability are good, the weight is light, and it has the advantages of low construction and maintenance costs.

[0009] Furthermore, the rotating frame includes an arc-shaped frame rotating ring, a left oblique rod, a right oblique rod, and a support frame fixing rod; the rotating ring is in a circular ring shape, the rotating ring is sleeved on the positioning cross rod and can rotate relative to the positioning cross rod; the upper ends of the left oblique rod and the right oblique rod are both connected to the rotating ring, the left oblique rod and the right oblique rod form an angle of 10-60 degrees with each other, the lower ends of the left oblique rod and the right oblique rod are both fixedly connected to the support frame fixing rod, and the support frame fixing rod is fixedly connected to the adjustable reflector support frame.

[0010] This design combines the receiver rotation structure with the reflector angle adjustment structure. Through optimized design, the structure is simplified as much as possible while ensuring the focusing performance requirements, reducing the cost and weight of the device. The adjustment of the reflector and the rotation of the receiver are easy to operate and control.

[0011] Furthermore, the angle adjustment fixing device includes an arc top rod, the two ends of which are respectively connected to the left oblique rod and the right oblique rod, and an arc-shaped oblong hole is provided on the arc top rod, and a positioning bolt passes through the arc-shaped oblong hole and is fastened by a nut.

[0012] The angle adjustment fixture can realize stepless adjustment of the angle of the reflector by selecting the relative fixing position of the fixing bolt and the oblong hole. It has strong applicability, simple structure and easy operation.

[0013] Furthermore, the adjustable reflector support frame includes an arc frame, a reflector support rod, an adjusting screw, and an adjusting nut; the arc frame is fixed on the support frame fixing rod of the rotating frame, a plurality of bolt holes are provided on the arc frame, the adjusting screw passes through the bolt holes, and the adjusting screw is sleeved with two adjusting nuts respectively located above and below the arc frame, the upper end of the adjusting screw is fixedly connected to the reflector support rod, and the reflector support rod is fixedly connected to the main reflector.

[0014] The adjustment mechanism can be used to finely adjust the height, curvature and angle of the main reflector within a certain range so that the reflector reaches the set state of the area. The reflector support rod and the main reflector can be fixed by magnet adsorption and are easy to disassemble.

[0015] Furthermore, the receiver module also includes a CPC reflector, which is fixed on the receiver fixing frame and located on the upper side of the straight-through vacuum collector tube. Part of the sunlight reflected by the main reflector directly irradiates the straight-through vacuum collector tube, and part of the sunlight is reflected by the CPC reflector and then irradiates the straight-through vacuum collector tube.

[0016] The use of CPC reflectors can further improve the concentration ratio of the solar collector and reduce the tracking accuracy requirements.

[0017] Furthermore, the main reflector adopts a reflective mirror or a reflective aluminum plate.

[0018] Furthermore, the power device includes a servo motor, a speed reducer, and a rotating gear.

[0019] Furthermore, the radial cross section of the reflective surface of the main reflector is a part of a parabola, and the reflective surface of the main reflector is asymmetric with respect to the symmetry axis of the parabola.

[0020] Furthermore, the seasonally adjustable reflector concentrating and collecting device also includes a greenhouse; the main reflector, the rotating rod module, the reflector support adjustment module, and the receiver module are all located in the greenhouse, and the greenhouse includes a greenhouse frame and a light-transmitting layer, and the light-transmitting layer is made of glass or a highly light-transmitting plastic film.

[0021] The use of greenhouses has the following advantages: 1. It can avoid contact with the outside air, reduce the obstruction of light by dust and debris, and is easy to clean and maintain; 2. It reduces the erosion of rain, air, debris and thermal collectors, reduces the decay rate of the reflectivity of the reflective board, and extends the service life of the reflective board, CPC collector and other devices; 3. Because there is no influence of wind, the wind resistance requirements are reduced, and simple brackets and thin-walled reflectors can be used to reduce the weight and cost of the device; 4. The thermal insulation performance of the greenhouse (sun room) reduces the heat loss of the thermal collector and improves the thermal collection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a seasonally adjustable reflector concentrating and thermal collecting device.

[0023] Figure 2 It is a structural schematic diagram of the rotating rod module.

[0024] Figure 3 It is a structural schematic diagram of a reflector support adjustment module.

[0025] Figure 4 It is a structural diagram of the receiver module.

[0026] Figure 5 A design aid for the reflective surface of the main reflector.

[0027] Figure 6 A design aid for the operating trajectory of the receiver module.

[0028] Figure 7 It is a structural schematic diagram of a reflector seasonally adjustable concentrating and thermal collecting device array.

[0029] Figure 8 It is a simulation diagram of the focusing of the reflector seasonal adjustment focusing and thermal collector device.

[0030] Fig. 9 This is a diagram showing the range of incidence angle changes for the seasonally adjustable reflector-type concentrating solar collector in Nanjing.

[0031] Among them: 1 is the main reflector, 2 is the rotating rod module, 3 is the reflector support adjustment module, 4 is the receiver module, 5 is the greenhouse, 21 is the support rod, 22 is the positioning cross bar, 23 is the rotating shaft, 24 is the rotating rod, 25 is the receiver fixing frame, 26 is the counterweight block, 27 is the power device, 28 is the positioning bolt, 31 is the rotating frame, 32 is the angle adjustment fixing device, 33 is the adjustable reflector support frame, 311 is the rotating ring, 312 is the left oblique rod, 313 is the right oblique rod, 314 is the support frame fixing rod, 321 is the arc rod, 322 is the arc-shaped oblong hole, 331 is the arc-shaped frame, 332 is the reflector support rod, 333 is the adjusting screw, 334 is the adjusting nut, 41 is the straight-through vacuum collector tube, 42 is the CPC reflector, 601 is the incident light, 602 is the reflected light, 603 is the inscribed circle in the triangular area, and 604 is the running arc track. DETAILED DESCRIPTION

[0032] See also Figure 1-Figure 4 .

[0033] The seasonally adjustable reflector concentrating and heat collecting device comprises a main reflector 1, a rotating rod module 2, a reflector support and adjustment module 3, and a receiver module 4.

[0034] The upper surface of the main reflector 1 is a reflective surface, which is an arc-shaped surface concave downward, so that the reflective surface forms a reflective groove, and the reflective groove extends along an axial direction. The main reflector 1 is a fixed structure; the main reflector 1 adopts a reflector.

[0035] The rotating rod module 2 includes a support rod 21, a positioning cross bar 22, a rotating shaft 23, a rotating rod 24, a receiver fixing frame 25, a counterweight 26, a power device 27, and a positioning bolt 28; the positioning cross bar 22 is fixed on the support rod 21, the lower end of the support rod 21 is fixed on the ground, the rotating shaft 23 is coaxially connected with the positioning cross bar 22 and can rotate relative to the positioning cross bar 22, the middle position of the rotating rod 24 is fixedly connected with the rotating shaft 23, the two ends of the rotating rod 24 are respectively connected to the receiver fixing frame 25 and the counterweight 26, the rotating shaft 23 is fixedly connected with the power device 27, the power device 27 drives the rotating shaft 23 and the rotating rod 24 to rotate, and a positioning bolt 28 is fixedly provided at the middle position of the support rod 21; the power device 27 includes a servo motor, a reducer, and a rotating gear; the weight of the counterweight 26 satisfies that the center of gravity of the object supported on the support rod 21 is on the axis of the rotating shaft 23.

[0036] The reflector support and adjustment module includes a rotating frame 31, an angle adjustment fixture 32, and an adjustable reflector support frame 33; the upper end of the rotating frame 31 is connected to the positioning cross bar 22, and the rotating frame 31 can rotate around the positioning cross bar 22; the angle adjustment fixture 32 is fixedly connected to the middle position of the rotating frame 31, and the angle adjustment fixture 32 is connected to the rotating rod module 2 through a positioning bolt 28; the adjustable reflector support frame 33 is fixedly connected to the lower end of the rotating frame 31, and the adjustable reflector support frame 33 supports and fixes the main reflector 1.

[0037] The rotating frame 31 includes a rotating ring 311, a left oblique rod 312, a right oblique rod 313, and a support frame fixing rod 314; the rotating ring 311 is in a circular ring shape, and the rotating ring 311 is sleeved on the positioning cross bar 22 and can rotate relative to the positioning cross bar 22; the upper ends of the left oblique rod 312 and the right oblique rod 313 are both connected to the rotating ring 311, and the left oblique rod 312 and the right oblique rod 313 form an angle of 10-60 degrees with each other, and the lower ends of the left oblique rod 312 and the right oblique rod 313 are fixedly connected to the support frame fixing rod 314, and the support frame fixing rod 314 is fixedly connected to the adjustable reflector support frame 33.

[0038] The angle adjustment fixture 32 includes an arc rod 321 , the two ends of the arc top rod 321 are respectively connected to the left oblique rod 312 and the right oblique rod 313 , and an arc-shaped oblong hole 322 is provided on the arc top rod 321 , and the positioning bolt 28 passes through the arc-shaped oblong hole 322 and is fastened by a nut.

[0039] The adjustable reflector support frame 33 includes an arc frame 331, a reflector support rod 332, an adjusting screw 333, and an adjusting nut 334; the arc frame 331 is fixed on the support frame fixing rod 314 of the rotating frame 31, and a plurality of bolt holes are provided on the arc frame 331, and the adjusting screw 333 passes through the bolt holes. The adjusting screw 333 is sleeved with two adjusting nuts 334 respectively located above and below the arc frame 331, and the upper end of the adjusting screw 333 is fixedly connected to the reflector support rod 332, and the reflector support rod 332 is fixedly connected to the main reflector 1.

[0040] The receiver module 4 includes a straight-through vacuum heat collecting tube 41 and a CPC reflector 42, both of which are fixedly mounted on the receiver fixing frame 25, and the CPC reflector 42 is located on the upper side of the straight-through vacuum heat collecting tube 41. A portion of the sunlight reflected by the main reflector 1 directly irradiates the straight-through vacuum heat collecting tube 41, and a portion of the sunlight is reflected by the CPC reflector 42 and irradiates the straight-through vacuum heat collecting tube 41. The length of the straight-through vacuum heat collecting tube 41 is 2m, and the metal tube inside the straight-through vacuum heat collecting tube 41 is a DN16 stainless steel tube (outer diameter 22mm).

[0041] In this embodiment, a trapezoidal frame is fixedly mounted on the receiver fixing frame 25, and a straight rod is installed between the top corners of the two trapezoidal frames to connect the two trapezoidal frames into a fixed frame. The two ends of the straight-through vacuum heat collecting tube 41 are respectively fixed on the trapezoidal frame, and the outer side surface of the CPC reflector 42 is fixed on the straight rod.

[0042] The design of the reflective surface of the main reflector 1 is described below (using a specific embodiment).

[0043] See also Figure 5 , the radial cross section of the reflective surface of the main reflector 1 is a part of a parabola, and the formula of the parabola is: Where p is the focal length, the focus of the parabola is F, and the shape of the reflective surface of the main reflector 1 is determined by the following steps:

[0044] (11) The two endpoints of the radial cross section of the reflector are respectively called endpoint A (x1, y1) and endpoint B (x2, y2). The length of l AB , the focus F of the parabola to the line segment The distance is called l F-AB , determine l AB =848.67mm, l F-AB =1125.21mm;

[0045] (12) It is determined that the latitude of the region (Nanjing) where the reflector seasonal adjustment type concentrating solar collector device is located is 32°, that is, θ=32;

[0046] (13) According to The calculation results show that p=1956.08mm, x1=-1582.17mm, y1=639.86mm, x2=-862.44mm, y2=190.13mm, which means that the radial cross-sectional shape of the reflective surface is determined.

[0047] See also Figure 6 , the following is based on the reflective surface of the main reflector 1 to determine the running track of the receiver module 4:

[0048] (21) The reflective surface of the main reflector 1 is set upward, and the line segment Placed in the horizontal direction, C(x3,y3) is The middle point of , point B is set as the coordinate origin;

[0049] (22) According to x3=(x1+x2) / 2, Determine x3 = -1222.31 mm, y3 = 381.78 mm;

[0050] (23) At each time point, the sunlight 601 forms a reflected light ray 602 at endpoint A, endpoint B and midpoint C. The three reflected light rays 602 form a triangular area. The center of the inscribed circle 603 in the triangular area is taken as the selected point. The selected points are connected and fitted into an arc line with a center coordinate of (-404.6, 747.7) and a radius of 811.6 mm. The arc line is the running arc trajectory 604 of the receiver module 4.

[0051] In this embodiment, the opening width of the CPC reflector 42 is 70.8 mm, the receiving angle of the CPC is 60°, the angle between the axial direction of the CPC reflector 42 and the radial direction of the running arc track 604 is 31.5°, and the truncation ratio of the CPC is 0.694.

[0052] See also Figure 7 The seasonally adjustable reflector concentrating and collecting device also includes a greenhouse 5, in which the main reflector 1, the rotating rod module 2, the reflector support adjustment module 3, and the receiver module 4 are all located. The greenhouse 5 includes a greenhouse frame and a light-transmitting layer, and the light-transmitting layer is made of glass.

[0053] The greenhouse 5 has the effects of reducing heat loss, reducing wind resistance to lighten the device, reducing the reflectivity decay rate of the main reflector 1, and facilitating cleaning and maintenance.

[0054] The reflector seasonal adjustment type concentrating heat collecting device array is composed of 6 reflector seasonal adjustment type concentrating heat collecting device units, 2 units in each column, a total of 3 columns, the axial direction of the straight-through vacuum heat collecting tube 41 is the east-west direction; the main reflector 1 of each reflector seasonal adjustment type concentrating heat collecting device has an area of ​​0.85m*2mm=1.7m 2 The height of the device is about 1.7m; the total lighting area of ​​the reflector seasonal adjustment concentrating and collecting device array is 1.7*6=10.2m 2 The rated solar power is 7.5kW, the total cost is about 28,000 yuan, and the concentration ratio is 848.67÷22=38.6.

[0055] See also Figure 8 Taking the present embodiment in Nanjing as an example, a ray tracing simulation was performed. a, b, c, and d in the figure are the reflection of sunlight when the incident angle deviates from the axis of the parabola by 0, 10, 20, and 30 degrees, respectively. It can be seen that when the incident light deviates from the angle of 0, the reflected light converges to one point; when the incident light deviates from the angle of 10, the reflected light converges to a small spot; when the incident light deviates from the angle of 20, the reflected light converges to a small spot and is smaller than the size of the heat collecting tube; when the incident light deviates from the angle of 30, the reflected light converges to a slightly larger spot and some light overflows the heat collecting tube.

[0056] See also Fig. 9The figure shows the changes in the north-south altitude angle (incident angle of the collector) from 8 am to 12 pm in Nanjing from June to December (symmetrical distribution in the first half of the year and in the afternoon). It can be seen that if the seasonal adjustment method is not adopted, the maximum deviation angle of the incident light of this collector is about 40°; if the seasonal adjustment method is adopted (adjusted 4 times a year), the maximum deviation angle of the incident light of this collector is about 16°. Therefore, the seasonal adjustment of the reflector can significantly reduce the deviation angle of the incident light of this collector, optimize the concentration and heat collection effect, improve the utilization rate of solar energy, and further reduce the tracking accuracy requirements.

[0057] The following is a summary of the advantages of this embodiment.

[0058]

[0059]

[0060] It can be seen from the above table that the present application has fewer rotating parts and lower tracking accuracy requirements, which can reduce the investment costs of rotating equipment and control equipment; the effective utilization rate per unit area is high (about 94%), the focusing effect is good, and the utilization rate of solar energy is high; the wind resistance is good, the device is highly stable, and the weight is light; at the same time, it has the advantages of low construction and maintenance costs.

[0061] It should be noted that the above embodiments are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. The reflector seasonal adjustment type solar concentrator heat collector is characterized by It includes a main reflector, a rotating rod module, a reflector support and adjustment module, and a receiver module; the upper surface of the main reflector is a reflective surface, and the reflective surface is a downwardly concave arc surface, so that the reflective surface forms a reflective groove, and the reflective groove extends along an axial direction, and the main reflector is a fixed structure; the rotating rod module includes a support rod, a positioning cross rod, a rotating shaft, a rotating rod, a receiver fixing frame, a counterweight, and a power device, the positioning cross rod is fixed on the support rod, and the lower end of the support rod is fixed on the ground, the rotating shaft is coaxially connected with the positioning cross rod and can rotate relative to the positioning cross rod, the middle position of the rotating rod is fixedly connected with the rotating shaft, the two ends of the rotating rod are respectively connected to the receiver fixing frame and the counterweight, and the rotating shaft is fixed to the power device The power device drives the rotating shaft and the rotating rod to rotate, and a positioning bolt is fixed at the middle position of the support rod; the reflector support adjustment module includes a rotating frame, an angle adjustment fixing device, and an adjustable reflector support frame. The upper end of the rotating frame is connected to the positioning cross bar, and the rotating frame can rotate around the positioning cross bar. The angle adjustment fixing device is fixedly connected to the middle position of the rotating frame. The angle adjustment fixing device is connected to the rotating rod module through the positioning bolt. The adjustable reflector support frame is fixedly connected to the lower end of the rotating frame. The adjustable reflector support frame supports and fixes the main reflector; the receiver module includes a straight-through vacuum collector tube, and the straight-through vacuum collector tube is fixedly installed on the receiver fixing frame; The rotating frame comprises an arc frame rotating ring, a left oblique rod, a right oblique rod, and a support frame fixing rod; the rotating ring is in a circular ring shape, and the rotating ring is sleeved on the positioning cross rod and can rotate relative to the positioning cross rod; the upper ends of the left oblique rod and the right oblique rod are both connected to the rotating ring, and the left oblique rod and the right oblique rod form an angle of 10-60 degrees with each other, and the lower ends of the left oblique rod and the right oblique rod are both fixedly connected to the support frame fixing rod, and the support frame fixing rod is fixedly connected to the adjustable reflector support frame; The angle adjustment fixing device comprises an arc top rod, the two ends of which are respectively connected to a left oblique rod and a right oblique rod, an arc top rod is provided with an arc oblong hole, a positioning bolt passes through the arc oblong hole and is fastened by a nut.

2. The seasonally adjustable reflector solar collector device according to claim 1, characterized in that: The adjustable reflector support frame includes an arc frame, a reflector support rod, an adjusting screw and an adjusting nut; the arc frame is fixed on the support frame fixing rod of the rotating frame, a plurality of bolt holes are provided on the arc frame, the adjusting screw passes through the bolt holes, and two adjusting nuts are sleeved on the adjusting screw, which are respectively located above and below the arc frame. The upper end of the adjusting screw is fixedly connected to the reflector support rod, and the reflector support rod is fixedly connected to the main reflector.

3. The seasonally adjustable reflector solar collector device according to claim 1, characterized in that: The receiver module also includes a CPC reflector, which is fixed on the receiver fixing frame and located on the upper side of the straight-through vacuum collector tube. Part of the sunlight reflected by the main reflector directly irradiates the straight-through vacuum collector tube, and part of it is reflected by the CPC reflector and irradiates the straight-through vacuum collector tube.

4. The seasonally adjustable reflector solar collector device according to claim 1, characterized in that: The main reflector adopts a reflector.

5. The seasonally adjustable reflector solar collector device according to claim 1, characterized in that: The power device includes a servo motor, a speed reducer, and a rotating gear.

6. The seasonally adjustable reflector solar collector device according to claim 1, characterized in that: The radial cross section of the reflective surface of the main reflector is a part of a parabola, and the reflective surface of the main reflector is asymmetric relative to the symmetry axis of the parabola.

7. The seasonally adjustable reflector solar collector device according to claim 1, characterized in that: The reflector seasonal adjustment type concentrating heat collecting device also includes a greenhouse; the main reflector, the rotating rod module, the reflector support adjustment module, and the receiver module are all located in the greenhouse, and the greenhouse includes a greenhouse frame and a light-transmitting layer, and the light-transmitting layer is made of glass or a high-light-transmitting plastic film.

Images