CN211011959U - Integrated system of triangular thermal collector power generation based on linear Fresnel lens - Google Patents

Abstract

The utility model discloses a three-edged heat collection and power generation integrated system based on a linear Fresnel lens, comprising a heat collection tube, an angle rotation platform and a solar energy automatic tracker. Both ends of the heat pipe are fixed with the support frame, and N triangular prisms are fixed below the heat collecting pipe. The three sides of the triangular prism are respectively provided with a reflector, a thin film battery and a polysilicon battery, and the triangular prism can be rotated; the solar automatic tracker controls the angle The rotation of the rotating platform, the rotation of the N triangular prisms and the lifting of the rear rod. Sunlight can be collected on the collector tube through the reflective surface of the triangular prism, and solar energy can be tracked by the solar automatic tracker, which can detect the best angle for absorbing solar energy in real time and adjust it automatically to ensure that all the light shining on the triangular prism surface is concentrated. On the heat collecting tube, the utility model has a simple structure and overcomes the shortcomings of the existing Fresnel device, such as single function and low utilization efficiency of solar energy.

Description

Integrated system of triangular thermal collector power generation based on linear Fresnel lens

technical field

This device involves the technology of converting solar energy into electric energy and heat energy and the technology of automatically tracking the sun. The specific performance is that the use of the bracket to rotate has reached the purpose of initially tracking the sun. The two sides of the triangular prism structure use photoelectric technology to convert the solar energy into electric energy. The working surface below uses the Fresnel effect to convert light energy into heat energy, which is concentrated on the collector tube.

Background technique

Compared with other renewable energy sources, solar energy has obvious advantages such as wide distribution of resources, convenient development and utilization, and no pollution in the use process. Therefore, it is extremely important to accelerate the promotion and application of solar energy. However, due to the low energy flow density of solar energy and the limitation of natural conditions such as day and night, weather, season, geographic latitude and altitude, the efficiency of solar energy use is not ideal. Therefore, in view of the current situation, the comprehensive utilization of photothermal and photoelectricity is proposed. And at this stage, my country's use of solar energy is relatively low. That is, when using solar energy, there is no guarantee that the working state is optimal at the working time. This results in low efficiency of use, waste of solar energy, and a relatively narrow scope of action, which cannot adapt to changing environments.

The utility model with the Chinese utility model authorization number of CN 207265898U discloses a Fresnel concentrating photothermal power generation device. The specific working principle is that the Fresnel lens is arranged on the upper part of the semiconductor thermoelectric power generation device, and the sunlight is focused on the heating surface of the semiconductor thermoelectric power generation device after passing through the Fresnel lens. The semiconductor thermoelectric power generation device includes an inclined thermoelectric power generation sheet and a flat thermoelectric power generation sheet. The two ends of the flat thermoelectric power generation sheet are respectively spliced with an inclined thermoelectric power generation sheet. The heat dissipation surface of the semiconductor thermoelectric power generation device is in close contact with the upper surface of the heat dissipation device. The lower part is set in the cooling medium, and the inclined thermoelectric power generation sheet and the horizontal thermoelectric power generation sheet are arranged in a concave arc, so that in a day, no matter how the altitude and azimuth of the sun change, the sunlight is generated by the Fresnel lens. The light spot will always fall on the heating surface of the semiconductor thermoelectric power generation sheet coated with solar heat-absorbing paint, so that the temperature of the heating surface rises, and the temperature difference between the cold and hot ends of the semiconductor thermoelectric power generation sheet is increased, which can increase the amount of electricity generated. Although the absorbed solar energy is converted into heat energy, the biggest disadvantage is that it cannot adapt to various environments. Once there is a cloudy and rainy day, the working efficiency of this system will become extremely low, and it will take up a large space, so it is impossible to achieve large-scale civil promotion.

A solar tracking system and a linear Fresnel reflection photothermal device are disclosed in a patent document with a Chinese utility model authorization number of CN207350942U. The solar tracking system includes a base and a support frame that tilts relative to the base. The opposite sides of the support frame are respectively provided with a first liquid tank and a second liquid tank, and a communication connection is connected between the first liquid tank and the second liquid tank. The pipe and the connecting pump are used for the mutual circulation of the liquids in the first liquid tank and the second liquid tank. The change of the liquid weight in the first liquid tank and the second liquid tank generates a moment and the center of gravity of the support frame and its supports balance the moment. The steering of the support frame changes. In the solar tracking system provided by the utility model, the moment balance is generated by the change of the liquid weight in the first liquid tank and the second liquid tank on both sides of the support frame, so that the orientation of the support frame is changed, and the sun tracking function is realized; the first liquid tank, The liquids in the second liquid tank circulate and circulate with each other. Although this technical solution uses simple moment balance to realize the function of a complex sky survey system, it cannot adapt to the influence of various environments.

To sum up, the published articles on Fresnel CSP or the real objects that have been published have relatively mature technologies, but they have not solved the problems caused by temperature changes and illumination in various environments and weather conditions. The waste of solar energy caused by changes. Moreover, most of the devices have the disadvantage of taking up a large area and are not suitable for large-scale civil promotion.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the existing Fresnel device, such as single function and low utilization efficiency of solar energy. Provides a device with a simple structure that can absorb sunlight with high efficiency to collect heat and generate electricity. At the same time, a certain angle can be adjusted to ensure that all the light irradiated on the triangular prism surface is concentrated on the heat collector. In addition, the system is equipped with automatic solar tracking. The device can detect the best angle for absorbing solar energy in real time and adjust it automatically. Ensure efficient use of light.

In order to solve the above technical problems, the utility model proposes a linear Fresnel lens-based triangular heat-collecting power generation integrated system, which includes a heat-collecting tube and an angle rotating platform, and the angle rotating platform is fixed on a support frame, so the The support frame includes a front rod and a rear rod, the front rod is a fixed rod, and the rear rod can be vertically lifted; the two ends of the heat collecting tube are respectively connected with the front rod and the rear rod. The rod is fixed, and N triangular prisms are fixed under the heat collecting tube, and the direction of the triangular prism is consistent with the direction of the heat collecting tube; the three sides of the triangular prism are respectively provided with a reflector and a thin film battery and polycrystalline silicon cells, both ends of the triangular prism are provided with coaxial shaft heads, the shaft heads at one end of the triangular prism are rotatably connected with the rear rod of the support frame, and the shaft heads at the other end of the triangular prism are connected There is a transmission box fixed on the front rod; the transmission box includes a casing, and the casing includes a main transmission shaft and N passive shafts respectively connected with the other end of each triangular prism. Bearings are arranged between the shaft and the housing; the passive shaft is arranged vertically with the main drive shaft, the main drive shaft is provided with N driving gears at equal intervals, and each of the N passive shafts is provided with one Driven gears, N driven gears mesh with N drive gears in one-to-one correspondence; a differential with a differential lock structure is arranged between the main drive shaft and two adjacent drive gears; the main drive shaft A drive motor is connected to the input end of the device; a solar automatic tracker is also installed, which controls the rotation of the angle rotating platform, the rotation of the N triangular prisms, and the lifting of the rear rod.

Further, in the present invention, the driving gear and the driven gear are bevel gears.

The angle rotating platform realizes the horizontal rotation of the support frame, and establishes the sun altitude angle through the lifting adjustment of the rear rod and the local latitude. The solar automatic tracker can detect the best angle for absorbing solar energy in real time and automatically adjust the angle of the rotating platform , the rotation direction and angle of the N triangular prisms and the lifting position of the rear rod, so as to ensure that the triangular prism is in the best working position and to ensure the efficient use of light.

Compared with the prior art, the beneficial effects of the present utility model are:

(1) The utility model system is a solar linear Fresnel thermoelectric conversion system, which can adapt to various environments and efficiently utilize solar energy to collect heat and electricity, and has a wide range of utilization of solar energy.

(2) The prior art adopts trough type heat collection, while the device of the present utility model adopts a plurality of triangular prism heat collection surfaces, which are linearly combined to ensure the high efficiency of heat collection, and can also achieve high radiation conditions. The excess light is converted into electricity. There are many applicable directions, which greatly improves the flexibility.

Description of drawings

1 is a schematic diagram of the internal transmission structure of the transmission box of the present invention;

Figure 2 is a schematic structural diagram of the utility model triangular-shaped heat collector power generation integrated system;

Fig. 3 is the veneer schematic diagram of three sides of triangular prism in the present utility model;

Figure 4 is a schematic diagram of the connection between the passive shaft and the casing.

In the picture: 1- collector tube, 2- triangular prism, 3- main drive shaft, 4- driving gear, 5- driven gear, 6- bearing, 7- driven shaft, 8- support frame, 9- shell, 11- Angle rotating platform, 10-drive motor, 12-differential with differential lock structure, a-reflector, b-thin film battery, c-polysilicon battery.

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments do not limit the present utility model in any way.

As shown in FIG. 1 , a linear Fresnel lens-based triangular heat collection and power generation integrated system proposed by the present utility model is used to realize heat collection and power collection of solar energy which can adapt to various environments and efficiently utilize solar energy. The system includes a collector The heat pipe and an angle rotating platform 11, the angle rotating platform 11 is fixed on a support frame 8, the support frame 8 includes a front rod and a rear rod, the front rod is a fixed rod, the rear rod The rods can be vertically lifted; the two ends of the heat collecting tube 1 are respectively fixed with the front rod and the rear rod, and N triangular prisms 2 are fixed under the heat collecting tube 1. In the present utility model, three The number of prisms is not limited. The direction of the triangular prism 2 is consistent with the direction of the heat collecting tube 1 , and the heat collecting tube 1 and the N triangular prisms 2 are relatively stationary. As shown in FIG. 3 , three sides of the triangular prism 2 are respectively provided with Reflector a, thin film battery b and polycrystalline silicon battery c, each triangular prism structure realizes the utilization of light, and thin film battery b and polycrystalline silicon battery c utilize photoelectric effect to convert light energy into electrical energy. The reflector a reflects and collects light onto the heat collector tube 1 through the Fresnel effect, improves the solar energy flow density, utilizes the characteristics of the heat collector tube to concentrate the solar light and heat, and converts the light energy into heat energy.

As shown in FIG. 1 , two ends of the triangular prism 2 are provided with coaxial shaft heads, and the shaft heads at one end of the triangular prism 2 are rotatably connected with the rear rod of the support frame 8 . The triangular prism 2 The other end of the shaft head is provided with a transmission box fixed on the front rod; the transmission box includes a casing, which includes a main transmission shaft 3 and N shaft heads at the other end of each triangular prism 2 respectively. The connected passive shaft 7, as shown in FIG. 4, is provided with a bearing 6 between the passive shaft 7 and the housing; the passive shaft 7 is arranged vertically with the main transmission shaft 3, and the main transmission shaft 3 There are N driving gears 4 at equal intervals, and a driven gear 5 is provided on each of the N driven shafts 7. The driven wheel 5 is connected with the shaft head on the triangular prism through the driven shaft 7, so that the driven wheel 5, the passive The shaft 7 and the triangular prism 2 are relatively stationary; the driving gear 4 and the driven gear 5 are bevel gears, and the bevel gear transmission is a deceleration transmission, and the N driven gears 5 are in one-to-one correspondence with the N driving gears 4 Meshing; the driven gear 5 rotates with the driven shaft 7 and the triangular prism 2 according to the driving gear 4 . A differential gear 12 with a differential lock structure is arranged between the main drive shaft 3 and the two adjacent driving gears 4. The differential gear realizes the rotation of the heat collecting surface on the surface of the triangular prism at each different position through the differential lock. purposes from different angles. The input end of the main transmission shaft 3 is connected with a drive motor 10; a solar automatic tracker is also installed, and the solar automatic tracker controls the rotation of the angle rotation platform 11, the rotation of the N triangular prisms 2 and the rear Lifting and lowering of components. The angle rotation platform 11 realizes the horizontal rotation of the support frame 8, and establishes the sun altitude angle through the lifting adjustment of the rear rod and the local latitude. The solar automatic tracker can detect the best angle for absorbing solar energy in real time and automatically adjust the angle The rotation direction and angle of the rotating platform 11 , the N triangular prisms 2 and the lifting position of the rear rods are used to ensure that the triangular prisms 2 are in the best working position and efficient use of light. The solar tracking function of the device can be realized

In the utility model, through the rotation of the gear transmission mechanism, the different faces of the triangular prism can be made to face the sun, so that the solar energy under different radiation conditions can be efficiently converted into heat energy and electric energy, and at the same time, the excess light conversion when the radiation conditions are better can be realized. for heat and electricity. Convert solar energy into various forms of energy. The utility model utilizes the triangular prism structure, and the surface of the triangular prism carries two sides of different solar cells, namely the thin film cell b and the polycrystalline silicon cell c, so as to adapt to different environmental requirements. The reflector a reflects and concentrates the light rays directed towards the triangular prism structure onto the heat collector tube 1 . By enriching solar energy with lower energy density, higher temperature can be obtained, which provides the possibility for subsequent energy use.

In the present invention, through the adjustment of the angle of the support frame 8 (the front rod of the support frame 8 is a fixed rod, which is kept fixed, and the rear rod can be extended and retracted in the longitudinal direction, so that the angle can be adjusted appropriately) and the local Latitude establishes the altitude of the sun. An angle rotation platform 11 is installed on the bottom of the support frame 8 to rotate the support frame 8 in the horizontal plane. The working platform of the system composed of the angle rotating platform 11 and the support frame 8 controlled by the solar automatic tracker can track the solar energy to ensure that the working environment of the triangular prism structure is the best environment.

To sum up, using the system of the present utility model, the sunlight can be collected on the heat collecting tube 1 through the reflective surface of the triangular prism 2, and the solar energy can be tracked by the solar energy automatic tracker, and the optimal angle for absorbing solar energy can be detected in real time and automatically adjusted. , to ensure that all the light irradiated on the 2 faces of the triangular prism is concentrated on the heat collecting tube 1 to ensure the efficient utilization of the light, thereby absorbing the most heat. The utility model has a simple structure, can absorb sunlight, collect heat and generate electricity with high efficiency, and overcome the shortcomings of the existing Fresnel device, such as single function and low utilization efficiency of solar energy.

Although the present utility model has been described above in conjunction with the accompanying drawings, the present utility model is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the inspiration of the present invention, many deformations can be made without departing from the purpose of the present invention, which all belong to the protection of the present invention.

Claims (3)

1. A triangular heat collection and power generation integrated system based on a linear Fresnel lens comprises a heat collection tube (1) and is characterized by further comprising an angle rotation platform (11), wherein the angle rotation platform (11) is fixed on a support frame (8), the support frame (8) comprises a front rod piece and a rear rod piece, the front rod piece is a fixed rod, and the rear rod piece can be lifted longitudinally;

two ends of the heat collecting tube (1) are respectively fixed with the front rod piece and the rear rod piece, N triangular prisms (2) are fixed below the heat collecting tube (1), and the directions of the triangular prisms (2) are consistent with the direction of the heat collecting tube (1);

three side surfaces of the triangular prism (2) are respectively provided with a reflector (a), a thin film battery (b) and a polycrystalline silicon battery (c), two ends of the triangular prism (2) are provided with coaxial shaft heads, the shaft head at one end of the triangular prism (2) is rotatably connected with a rear rod piece of the support frame (8), and a shaft head at the other end of the triangular prism (2) is provided with a transmission case fixed on the front rod piece;

the transmission case comprises a shell, a main transmission shaft (3) and N driven shafts (7) which are respectively connected with the shaft head at the other end of each triangular prism (2) are arranged in the shell, and a bearing is arranged between each driven shaft (7) and the shell; the driven shafts (7) are perpendicular to the main transmission shaft (3), N driving gears (4) are arranged on the main transmission shaft (3) at equal intervals, one driven gear (5) is arranged on each driven shaft (7), and the N driven gears (5) are meshed with the N driving gears (4) in a one-to-one correspondence manner; a differential mechanism (12) with a differential lock structure is arranged between the main transmission shaft (3) and two adjacent driving gears (4); the input end of the main transmission shaft (3) is connected with a driving motor (10);

still install solar energy automatic tracking ware, solar energy automatic tracking ware control the rotation of angle rotary platform (11), the rotation of N triangular prism (2) and the lift of rear portion member.

2. The triangular heat-collecting and power-generating integrated system based on linear Fresnel lenses according to claim 1, wherein the driving gear (4) and the driven gear (5) are bevel gears.

3. The triangular heat-collecting and power-generating integrated system based on the linear Fresnel lens as claimed in claim 1, wherein the angular rotation platform (11) is used for realizing horizontal rotation of the support frame (8), the solar altitude angle is established through the lifting adjustment of the rear rod piece and the local latitude, and the solar automatic tracker can detect the optimal angle for absorbing solar energy in real time and automatically adjust the angular rotation platform (11), the rotation directions and angles of the N triangular prisms (2) and the lifting position of the rear rod piece so as to ensure that the triangular prisms (2) are in the optimal working position and ensure the efficient utilization of light.

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