A light-gathering light-supplementing device and a solar heat collection system combined with facility agriculture

Abstract

The application discloses a kind of light-gathering light-supplementing device and solar heat collection system combined with facility agriculture, including sunlight greenhouse, primary light collector, rotating shaft, secondary light collector and vacuum tube receiver, reflective film receiver;The present application uses steel wire rope traction system to realize the unfolding and folding of light collector, and the light collector is unfolded when the sunlight is strong at noon, and the sunlight is collected on the vacuum tube receiver placed in a specific position inside the sunlight greenhouse, and the sunlight that cannot be directly collected on the vacuum tube due to offset error is also collected on the vacuum tube after being reflected by the secondary light collector, and the light collector is folded to form a convex surface when the sunlight is not strong in the morning and evening, and the reflective film is lowered from the reflective film receiver to supplement light for plants, and the sunlight collected at noon will be converted into high-temperature heat, and the high-temperature heat energy is used for thermal power generation, and the waste heat is stored in the soil under the greenhouse by the heat storage system to meet the heating demand of agricultural facilities.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar light condensation and agricultural facilities, in particular to a solar heat collection system combining a light condensation device with facility agriculture. BACKGROUND

[0002] Traditional sunlight greenhouses use their own structures to absorb solar energy for heat preservation, but the effect is poor, and it is difficult to meet the temperature requirements of plants in cold northern winters, and it is impossible to accurately control the room temperature. Using traditional energy to heat the greenhouse not only costs money and effort, but also pollutes the environment. At the same time, the traditional sunlight greenhouse uses the good light transmittance of plastic film to light according to the natural law of the sun rising in the east and setting in the west, and the light is not uniform. Therefore, a foldable light condensation device is designed, which combines solar technology with greenhouse construction, not only solves the problem of heat preservation of the greenhouse, but also to a certain extent, light supplement for plants, realizes clean use of energy, not only saves financial and human resources, but also makes plants grow better, which can be said to be "one greenhouse with multiple uses". In the process of solar energy utilization in the greenhouse, the traditional reflective condenser does not have a transmission function. If they are installed on the front slope of the greenhouse, not only will they block part of the sunlight from entering the greenhouse, but they will also leave a large shadow in the greenhouse, thereby affecting the light collection of the plants in the greenhouse. SUMMARY

[0003] The purpose of the present application is to provide a light condensation device combined with facility agriculture and a solar heat collection system, which achieves the purpose of rational utilization of solar energy.

[0004] To achieve the above-mentioned purpose, the present application provides the following scheme:

[0005] A light condensation device combined with facility agriculture and a solar heat collection system, comprising a top transparent sunlight greenhouse, a parabolic reflective primary condenser arranged in the sunlight greenhouse, a rotating shaft arranged in the middle region of the parabolic reflective primary condenser, a secondary condenser arranged on the top of the sunlight greenhouse, and a vacuum tube receiver arranged at the focal point position of the secondary condenser, a reflective film retractor, an arch top traction system for pulling the parabolic reflective condenser, a ground traction system, and a wall surface traction system, a steel wire rope is arranged above the parabolic reflective primary condenser, both ends of the steel wire rope pass through the upper end and the terminal end of the parabolic reflective primary condenser, the steel wire rope at the upper end is connected with the arch top traction system through the shaft seat arranged on the upper side of the arch top, the steel wire rope at the terminal end is connected with the ground traction system through the fixed pulley arranged on the lower side of the arch top, and the rotating shaft is connected with the wall surface traction system through the steel wire rope.

[0006] Preferably, a thermoelectric system and a heat storage system are further included, the thermoelectric system is connected with the vacuum tube receiver and the heat storage system respectively, and a heat dissipation system includes a heat dissipation pipeline arranged at the bottom of the sunlight greenhouse and a water pump for connecting the heat storage system and the heat dissipation pipeline, the thermoelectric system receives heat energy of the vacuum tube receiver to generate electricity, and the waste heat of the electricity generation is released to the soil through the heat dissipation pipeline.

[0007] Preferably, the parabolic reflector includes two side frames and a light splitting film, the side frames include curved connecting rods connected through rotating shafts, upper ends of the curved connecting rods are fixed to the shaft bases, and the traction system is installed at the shaft bases, and lower ends of the curved connecting rods are connected with the ground traction system through the fixed pulleys and the steel wire ropes.

[0008] Preferably, the light splitting film retractor is fixed to the lower end of the parabolic reflector, the light splitting film in the light splitting film retractor is connected with the wall traction system through the steel wire rope along the side frame, and the light splitting film is lowered to cover the entire convex surface when the parabolic reflector is folded.

[0009] Preferably, the vault traction system, the ground traction system and the wall traction system each include a steel wire rope, a motor and a winch, and the motor drives the winch to complete traction of the steel wire rope.

[0010] Preferably, the fixed pulley is fixed inside the sunlight greenhouse.

[0011] The present application has the following technical effects relative to the prior art:

[0012] 1. The reflecting surface of the parabolic reflector is replaced by the light splitting film, which can transmit visible light required for plant photosynthesis and reflect the remaining light including near-infrared light, so that the light collector can collect light and heat while ensuring plant illumination.

[0013] 2. In summer, the temperature inside the greenhouse is high, which is not conducive to plant growth. Usually, measures such as shading, spraying and ventilation are taken to reduce the temperature. The light splitting film used in the light collector can reflect high-heat light to the receiver, generating electricity while ensuring that the indoor temperature does not become too high. This effectively utilizes solar energy while saving the cost of greenhouse cooling.

[0014] 3. When the light is not strong, the light collector lowers the light splitting film to supplement the light to the side of the plant, making the light more uniform and the plant grow better.

[0015] 4. The light collector is combined with the upper vault of the greenhouse, does not occupy ground space, maximizes the collection of sunlight in the greenhouse, avoids the shading phenomenon of the light collector to the lower greenhouse, and saves space and solar energy resources.

[0016] 5. The excess solar heat collected in the agricultural greenhouse is used for power generation, and the waste heat is used for heating the greenhouse, achieving "one greenhouse with multiple purposes".

[0017] In summary, the parabolic reflector and facility agriculture are combined ingeniously in the application, and the agricultural light complementation is effectively realized, and the application of solar energy in the agricultural field is widened. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present application or prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments of the present application, and all other drawings obtained by those skilled in the art without any creative effort based on these drawings also belong to the protection scope of the present application.

[0019] Figure 1 : operational principle diagram of the foldable parabolic reflector system when unfolded;

[0020] Figure 2 : operational principle diagram of the foldable parabolic reflector system when folded;

[0021] Figure 3 : three-dimensional schematic diagram of the foldable parabolic reflector system;

[0022] Figure 4 : winter embodiment diagram of the foldable parabolic reflector system;

[0023] In the drawings, 1 represents sunlight, 2 represents a vacuum tube receiver, 3 represents a secondary light concentrator, 4 represents a reflective film receiver, 5 represents a fixed pulley, 6 represents a steel wire rope, 7 represents a ground traction system, 8 represents a heat dissipation pipeline, 9 represents a vault traction system, 10 represents a shaft seat, 11 represents a parabolic reflector, 12 represents a rotating shaft, 13 represents a wall traction system, 14 represents a thermoelectric system, 15 represents a heat storage water tank, and 16 represents a water pump. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present application.

[0025] The purpose of the present application is to provide a solar heat collection system combining a light concentration and light supplement device with facility agriculture, so as to achieve the purpose of reasonably utilizing sunlight.

[0026] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0027] Reference Figures 1 to 4 A light-gathering light-supplementing device and a solar heat collection system combined with facility agriculture, comprising a top transparent sunlight greenhouse, a parabolic reflector primary light collector arranged in the sunlight greenhouse, a rotating shaft arranged in the middle region of the parabolic reflector primary light collector, a secondary light collector arranged on the top of the sunlight greenhouse, and a vacuum tube receiver arranged at the focal point position of the secondary light collector, a reflective film retractor, an arch top traction system for pulling the parabolic reflector, a ground traction system, and a wall traction system, a steel wire rope is arranged above the parabolic reflector primary light collector, the two ends of the steel wire rope pass through the upper end and the terminal end of the parabolic reflector primary light collector respectively, the steel wire rope at the upper end is connected with the arch top traction system through the shaft seat arranged on the upper side of the arch top, the steel wire rope at the terminal end is connected with the ground traction system through the fixed pulley arranged on the lower side of the arch top, and the rotating shaft is connected with the wall traction system through the steel wire rope; the present application realizes the unfolding and folding of the light collector by using the steel wire rope traction system, the light collector is unfolded when the sunlight is strong at noon, the incoming sunlight is gathered on the vacuum tube receiver placed at a specific position in the sunlight greenhouse, part of the sunlight that cannot be directly gathered on the vacuum tube due to offset error is also gathered on the vacuum tube after being reflected by the secondary light collector, the light collector is folded to form a convex surface when the sunlight is not strong in the morning and evening, the reflective film is lowered from the reflective film retractor to supplement light for plants, the sunlight gathered at noon will be converted into high-temperature heat, the high-temperature heat energy is used for heat power generation, and the waste heat is stored in the soil under the greenhouse by the heat storage system, thereby providing heat demand for agricultural facilities.

[0028] Reference Figure 1 Further comprising a thermoelectric system and a heat storage system and a heat dissipation system, the thermoelectric system is connected with the vacuum tube receiver and the heat storage system respectively, the heat dissipation system comprises a heat dissipation pipeline arranged at the bottom of the sunlight greenhouse and a water pump for connecting the heat storage system and the heat dissipation pipeline, the thermoelectric system receives the heat energy of the vacuum tube receiver to generate electricity, and the waste heat generated by electricity is released to the soil through the heat dissipation pipeline.

[0029] Reference Figure 1 The parabolic reflector primary light collector comprises two side frames and a light splitting film, the side frame comprises a curved link connected by a rotating shaft, the curved link at the upper end is fixed with the shaft seat and the traction system is installed at the shaft seat, and the curved link at the terminal end is connected with the ground traction system through the fixed pulley and the steel wire rope.

[0030] Reference Figure 1The light reflection film retractor is fixed at the end of the parabolic primary light collector, and the light reflection film inside the light reflection film retractor is connected with the wall surface traction system along the frame through a steel wire rope, and the light reflection film is lowered to cover the entire convex surface when the parabolic primary light collector is folded.

[0031] Referring to Figure 1 The vault traction system, the ground traction system and the wall surface traction system all comprise a steel wire rope, a motor and a winch, and the motor drives the winch to complete the traction of the steel wire rope.

[0032] Referring to Figure 1 The fixed pulley is fixed inside the sunlight greenhouse.

[0033] The specific embodiments of the present application are as follows:

[0034] Referring to Figure 1 When the sunlight is strong at noon, the ground traction system stretches the parabolic primary light collector through the fixed pulley, so that the parabolic primary light collector is unfolded and reflects the sunlight onto the vacuum tube receiver, and the secondary light collector reflects the deviated sunlight onto the vacuum tube receiver twice, so as to guarantee the maximum sunlight receiving rate. After the receiver collects heat, the energy is supplied to the connected thermoelectric system, and the thermoelectric system generates electricity by using heat energy, and the waste heat of the electricity generation is released to the soil through the heat dissipation pipeline for greenhouse heating.

[0035] Referring to Figure 2 When the sunlight is not strong in the morning and evening, the wall surface traction system stretches the transmission shaft in the middle of the parabolic primary light collector, and the vault traction system stretches the end of the light collector, so that the light collector is folded to form a convex surface. Then the light reflection film inside the light reflection film retractor is stretched through the wall surface traction system to cover the entire convex surface, so as to reflect the incoming sunlight and provide light for plants.

[0036] Referring to Figure 3 The parabolic primary light collector is erected on the vault of the sunlight greenhouse through the support shaft seat and the steel wire rope. The end of the light collector is connected with the ground traction system through the fixed pulley and the steel wire rope, and is also connected with the vault traction system installed on the vault. The rotating shaft in the middle of the light collector is connected with the wall surface traction system through the steel wire rope. The secondary light collector is installed on the slope surface inside the sunlight greenhouse, and the vacuum tube receiver is arranged on the center line of the light collector. The light reflection film retractor is fixed at the end of the light collector, and the light reflection film inside the light reflection film retractor is connected with the wall surface traction system along the frame through a steel wire rope, and the light reflection film is lowered to cover the entire convex surface when the light collector is folded.

[0037] Referring to Figure 4In winter, the sun's altitude angle is low, the parabolic reflector primary concentrator is difficult to be inclined downward as a whole with the change of the sun's altitude angle due to the limitation of the greenhouse height, thus, only the upper half of the concentrator participates in the light collection and heat collection. The rotating shaft in the middle of the concentrator is pulled by the wall traction system (13) to adjust the angle, so that the upper half of the concentrator reflects the sunlight to the evacuated tube receiver, and the lower half of the concentrator is as parallel to the sunlight as possible under the action of the ground traction system and the vault traction system.

[0038] The adaptive changes according to the actual requirements are within the protection scope of the present application.

[0039] It should be noted that, for those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A solar heat collection system combined with a light-gathering light-supplementing device and facility agriculture, characterized by, The application relates to a solar energy collection system, which comprises a top transparent sunlight greenhouse, a parabolic primary concentrator arranged in the sunlight greenhouse, a rotating shaft arranged in a middle region of the parabolic primary concentrator, a secondary concentrator arranged at the top of the sunlight greenhouse, a vacuum tube receiver arranged at a focal point of the secondary concentrator, a reflective film retractor, an arch top traction system for pulling the parabolic primary concentrator, a ground traction system and a wall traction system, a steel wire rope arranged above the parabolic primary concentrator, the two ends of the steel wire rope penetrating the upper end and the terminal end of the parabolic primary concentrator, the steel wire rope at the upper end being connected with the arch top traction system through an axle seat arranged at the upper side of the arch top, the steel wire rope at the terminal end being connected with the ground traction system through a fixed pulley arranged at the lower side of the arch top, and the rotating shaft being connected with the wall traction system through the steel wire rope. The parabolic primary concentrator comprises two side frames and a light splitting film, the side frames comprise curved connecting rods connected through the rotating shaft, the curved connecting rods at the upper end are fixed with the axle seat and the traction system is arranged at the axle seat, and the curved connecting rods at the terminal end are connected with the ground traction system through the fixed pulley and the steel wire rope.

2. The concentrated light light-supplementing device and solar heat collecting system combined with facility agriculture according to claim 1, characterized in that, The application further comprises a thermoelectric system and a heat storage system and a heat dissipation system, the thermoelectric system is connected with the vacuum tube receiver and the heat storage system respectively, the heat dissipation system comprises a heat dissipation pipeline arranged at the bottom of the sunlight greenhouse and a water pump for connecting the heat storage system and the heat dissipation pipeline, the thermoelectric system receives the heat energy of the vacuum tube receiver to generate electricity, and the waste heat generated by electricity generation is released to the soil through the heat dissipation pipeline.

3. The solar heat collection system of claim 1, wherein the light collecting and light supplementing device is characterized by, The reflective film retractor is fixed at the terminal end of the parabolic primary concentrator, the reflective film in the reflective film retractor is connected with the wall traction system through the steel wire rope along the side frame, and the reflective film is lowered to cover the entire convex surface when the parabolic primary concentrator is folded.

4. The concentrated light light-supplementing device and solar heat collecting system combined with facility agriculture according to claim 1, characterized in that, The arch top traction system, the ground traction system and the wall traction system all comprise a steel wire rope, a motor and a winch, the motor drives the winch to complete the traction of the steel wire rope.

5. The concentrated light light-supplementing device and solar heat collecting system combined with facility agriculture according to claim 1, characterized in that, The fixed pulley is fixed in the sunlight greenhouse.

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