Solar energy collection and energy storage auxiliary energy comprehensive utilization system and method

Abstract

The present invention discloses a solar energy collection and energy storage auxiliary energy comprehensive utilization system, comprising a solar collector; the solar collector comprises a vacuum heat collecting tube array, the vacuum solar heat collecting tube array is composed of a plurality of vacuum heat collecting tubes distributed in parallel, and there is a light-permeable gap between any two adjacent vacuum heat collecting tubes; a solar energy storage power generation panel with a light-receiving surface facing upward is arranged in parallel below the solar heat collecting array; while being able to utilize solar energy more efficiently, it also has the function of collecting rainwater.

Description

Technical Field

[0001] The invention belongs to the field of solar energy heat collection. Background Art

[0002] The optical efficiency of solar collector tubes can be maintained at a high level. The optical efficiency of vacuum collector tubes can easily exceed 80%, while the optical efficiency of solar energy storage panels is generally around 15%, and it is difficult to exceed 30%; therefore, in the field of solar thermal utilization, collector tubes are generally used to utilize solar energy to heat water;

[0003] Since the intensity of sunlight radiation is always changing at different temperatures, seasons, and times of the day, the utilization of water in the thermal insulation water tank is also different at different times; since the capacity of the thermal insulation water tank is limited, when the amount of sunlight radiation in a certain period is too large and the water temperature in the thermal insulation water tank is too high, if the solar collector is further used to heat the water, the excessive sunlight radiation will not only cause energy waste, but also cause the water temperature in the thermal insulation water tank to be too high; if the heating is suspended, there will also be energy waste;

[0004] Therefore, a structure and scheme can be designed to use part of the excess radiation for power generation for temporary storage, so that this part of the stored electricity can be used to assist in heating the water in the insulated water storage tank at night. Summary of the invention

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a solar energy collection and energy storage auxiliary energy comprehensive utilization system and method, which can more efficiently utilize solar energy while also having the function of collecting rainwater.

[0006] Technical solution: To achieve the above-mentioned purpose, the solar energy collection and energy storage auxiliary energy comprehensive utilization system of the present invention is characterized by: comprising a solar collector; the solar collector comprises a vacuum solar collector tube array, the vacuum solar collector tube array is composed of a number of parallel distributed vacuum collector tubes, and there is a light-permeable gap between any two adjacent vacuum collector tubes; a solar energy storage power generation panel with the light-receiving surface facing upward is arranged in parallel below the solar collector array.

[0007] Furthermore, the upper and lower ends of the solar energy storage power generation panel are rotatably installed with a first transmission roller and a second transmission roller; it also includes a closed-loop conveyor belt body, and the inner sides of both ends of the closed-loop conveyor belt body respectively cross the first transmission roller and the second transmission roller; the closed-loop conveyor belt body includes an upper belt body and a lower belt body, the lower belt body is parallel to the solar energy storage power generation panel, and the solar energy storage power generation panel is sandwiched between the upper belt body and the lower belt body.

[0008] Furthermore, the roller driving steering gear is connected to the first transmission roller or the second transmission roller.

[0009] Furthermore, in mode a: the upper belt body is a light reflective section with a light reflective coating on the surface, and after sunlight is projected onto the surface of the upper belt body with the light reflective coating, it is reflected by the light reflective coating; the lower belt body is a colorless and transparent section without coating; on the basis of mode a, the motor drives the first transmission roller and the second transmission roller to make the closed-loop conveyor belt body transport along its own contour path until the upper belt body changes from the original light reflective section to the colorless and transparent section without coating, and the lower belt body changes from the original colorless and transparent section without coating to the light reflective section with light reflective coating, and then enters mode b.

[0010] Furthermore, there is a belt tensioning roller above the solar energy storage power generation panel; the inner side of the middle part of the upper belt body crosses the belt tensioning roller, and the belt tensioning roller bends the middle part of the upper belt body upward, so that the upper and lower parts of the upper belt body are respectively a gentle slope section a and a steep slope section b, and the closed-loop conveyor belt body is tensioned.

[0011] Furthermore, both the gentle slope section a and the steep slope section b form an angle with the surface where the solar energy storage power generation panel is located.

[0012] Furthermore, the steep slope section b of the closed-loop conveyor belt body is connected to the lower belt body through a circular arc spanning section spanning outside the second transmission roller;

[0013] It includes a rainwater collecting drum, which rolls closely and tangently with the arc span segment, a water collection ditch is formed above the tangent point between the rainwater collecting drum and the arc span segment, a water recovery channel is formed in the rainwater collecting drum, a row of water inlet holes are hollowed out along the length direction of the side wall of the rainwater collecting drum, and when the rainwater collecting drum rotates to a certain position around the axis, several water inlet holes on one side of the rainwater collecting drum are connected to the water collection ditch; one end of the water recovery channel is a rainwater leakage outlet, and a water collecting funnel is correspondingly arranged below the rainwater leakage outlet.

[0014] Furthermore, the working method of the solar energy collection and energy storage auxiliary energy comprehensive utilization system is: when the solar radiation intensity is not excessive, it enters mode a. In mode a, when the sunlight is direct, the sunlight is projected onto the surface of the gentle slope section a and the steep slope section b of the upper belt body with the light reflection coating through each light-transmitting gap, and then is obliquely reflected to the back side of the vacuum collector tube, thereby achieving the purpose of fully utilizing the solar radiation heat. The design of the gentle slope section a and the steep slope section b avoids the problem of direct sunlight returning along the original path.

[0015] When the intensity of solar radiation is excessive, on the basis of mode a, the motor drives the first transmission roller or the second transmission roller to transmit the closed-loop conveyor belt along its own contour path until the upper belt body changes from the original light-reflecting section with a coating to a colorless and transparent section without a coating, and the lower belt body changes from the original colorless and transparent section without a coating to a light-reflecting section with a light-reflecting coating, and then enters mode b; at this time, under direct sunlight, the sunlight is projected through the light-transmitting gaps onto the gentle slope section a and the steep slope section b of the transparent upper belt body without a coating, and finally projects onto the solar energy storage power generation panel.

[0016] Furthermore, on rainy days, the motor drives the first transmission roller and the second transmission roller to transmit the closed-loop conveyor belt along its own contour path, so that the arc span segment drives the rainwater collecting roller closely tangent to it to rotate slowly until a number of water inlet holes on one side of the rainwater collecting roller are connected to the water accumulation ditch and then pause; at this time, the rainwater will flow downward along the surface of the gentle slope section a and the steep slope section b of the upper belt body to the water accumulation ditch, and the water accumulated in the water accumulation ditch will reach the water recovery channel in the rainwater collecting roller through a number of water inlet holes, and then the rainwater leakage outlet at one end of the water recovery channel will leak the water underwater into the water receiving funnel.

[0017] Beneficial effects: When the solar radiation intensity is not excessive, the reflective structure can fully utilize the solar radiation heat in mode a; when the solar radiation intensity is excessive, mode a is converted to mode b, so that the solar energy storage panel generates electricity and charges the electric energy storage unit, while at the same time reducing the comprehensive light intensity of each vacuum collector tube under direct sunlight, thereby achieving the comprehensive energy utilization rate under the condition of excessive solar radiation intensity; when it is rainy, it is converted to mode c to recycle rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 It is an overall schematic diagram of a hot water supply system based on solar energy;

[0019] Attached Figure 2 It is a schematic diagram of the solar collector structure;

[0020] Attached Figure 3 It is a cross-sectional view of a solar thermal collector;

[0021] Attached Figure 4 Schematic diagram of the closed-loop conveyor belt structure;

[0022] Attached Figure 5 For attachment Figure 3 The schematic diagram of the structure behind the bracket is hidden on the basis of FIG. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] As attached Figures 1 to 5 The overall scheme of the solar thermal collection and energy storage auxiliary energy comprehensive utilization system shown in FIG. Figure 1 The diagram includes a water supply pipe 24, a hot water outlet pipe 25, a circulation pipe outlet section 22, a circulation pipe inlet section 21, a solar thermal array 18, an insulated water storage tank 23 and an electric energy storage unit 17; the water supply pipe 24, the hot water outlet pipe 25, the circulation pipe outlet section 22 and the circulation pipe inlet section 21 are all connected to the inner cavity of the insulated water storage tank 23; the cold water inlet end of the solar thermal array 18 is connected to the outlet end of the circulation pipe outlet section 22; the hot water outlet end of the solar thermal array 18 is connected to the water inlet end of the circulation pipe inlet section 21; a circulation pump is provided on the circulation pipe outlet section 22 or the circulation pipe inlet section 21.

[0025] The solar thermal collection array 18 of this solution includes mode a, mode b and mode c;

[0026] When the solar radiation intensity is not excessive, the system enters mode a, and the solar thermal array 18 uses all available solar radiation to heat the water flowing through it; when the solar radiation intensity is excessive, the system enters mode b, and the solar thermal array 18 uses part of the solar radiation to heat the water flowing through it, and also uses another part of the solar radiation to generate electricity, thereby charging the electric energy storage unit 17; when it rains, the system enters mode c, and the solar thermal array 18 collects rainwater together, aggregates and filters it, and delivers it to the insulated water storage tank 23; it also includes a rainwater aggregation pipe 19, on which a water pump and a valve are provided, the outlet end of the rainwater aggregation pipe 19 is connected to the inner cavity of the insulated water storage tank 23, and a rainwater filter 20 is provided on the rainwater aggregation pipe 19; an electric auxiliary heating device is provided in the insulated water storage tank 23, and the electric energy storage unit 17 can supply power to the electric auxiliary heating device in the insulated water storage tank 23.

[0027] The solar heat collection array 18 of this solution is composed of a plurality of solar heat collectors 42 distributed in an array; the structure of a single solar heat collector 42 is as follows: Figures 2 to 5 As shown:

[0028] The solar collector 42 includes a vacuum solar heat collecting tube array 8 along an oblique array, and the two sides of the vacuum solar heat collecting tube array 8 are respectively fixed on two oblique fixed brackets 27; the vacuum solar heat collecting tube array 8 is composed of a plurality of parallel distributed vacuum heat collecting tubes 10, and the inner tubes of the vacuum heat collecting tubes 10 are provided with a radiation absorbing coating; there is a light-transmitting gap 11 between any two adjacent vacuum heat collecting tubes 10; when the sunlight is direct, high-intensity sunlight can pass through each light-transmitting gap 11.

[0029] like Figure 3 and 5As described, a solar energy storage power generation panel 13 with the light-receiving surface facing upward is arranged in parallel below the solar thermal collection array 18, and the two sides of the solar energy storage power generation panel 13 are fixedly mounted on two oblique fixed brackets 27; the first transmission roller 6 and the second transmission roller 7 are rotatably mounted on the upper and lower ends of the solar energy storage power generation panel 13, and both ends of the first transmission roller 6 and the second transmission roller 7 are rotatably mounted on the oblique fixed bracket 27 through bearings; a roller driving servo 26 is arranged on the oblique fixed bracket 27, and the roller driving servo 26 is drivingly connected to the first transmission roller 6 or the second transmission roller 7.

[0030] like Figure 4 and 5 , and also includes a closed-loop conveyor belt body 1, the inner sides of the two ends of the closed-loop conveyor belt body 1 respectively cross the first transmission roller 6 and the second transmission roller 7; the closed-loop conveyor belt body 1 includes an upper belt body 1.1 and a lower belt body 1.2, the lower belt body 1.2 is parallel to the solar energy storage power generation panel 13, and the solar energy storage power generation panel 13 is sandwiched between the upper belt body 1.1 and the lower belt body 1.2.

[0031] In mode a: the upper belt body 1.1 is a light reflective section with a light reflective coating on the surface, which may be a silver-plated surface, so that the surface of the upper belt body 1.1 in this mode is like a mirror. After the sunlight is projected on the surface of the upper belt body 1.1 with the light reflective coating, it is reflected by the light reflective coating; the lower belt body 1.2 is a colorless and transparent section without coating;

[0032] On the basis of mode a, the motor drives the first transmission roller 6 and the second transmission roller 7 to make the closed-loop conveyor belt body 1 be transmitted along its own contour path until the upper belt body 1.1 changes from the original light-reflecting section to a colorless and transparent section without coating, and the lower belt body 1.2 changes from the original colorless and transparent section without coating to a light-reflecting section with a light-reflecting coating, and then enters mode b.

[0033] like Figure 5A belt tensioning roller 12 is arranged above the middle of the solar energy storage power generation panel 13, and both ends of the belt tensioning roller 12 are rotatably mounted on the oblique fixed bracket 27 through bearings; the inner side of the middle part of the upper belt 1.1 crosses the belt tensioning roller 12, and the belt tensioning roller 12 bends the middle part of the upper belt 1.1 upward, so that the upper and lower parts of the upper belt 1.1 are respectively a gentle slope section 1.1a and a steep slope section 1.1b, and the closed-loop conveyor belt 1 is tensioned; the gentle slope section 1.1a and the steep slope section 1.1b are both connected to the solar An angle is formed with the surface where the energy storage and power generation panels 13 are located, and the size of the angle is determined according to the actual average elevation angle of the local sunlight; under direct sunlight, the sunlight is projected onto the surface of the gentle slope section 1.1a and the steep slope section 1.1b of the upper belt body 1.1 with the light reflective coating through the light-transmitting gaps 11, and then is obliquely reflected to the back side of the vacuum collector tube 10, thereby achieving the purpose of fully utilizing the sunlight radiation heat. The design of the gentle slope section 1.1a and the steep slope section 1.1b avoids the problem of direct sunlight returning along the same path and being unable to be utilized.

[0034] The steep slope section 1.1b of the closed-loop conveyor belt body 1 is connected to the lower belt body 1.2 through an arc span section 1.3 spanning the second transmission roller 7; it also includes a rainwater collection roller 2, which rolls closely and tangent to the arc span section 1.3, and a water collection ditch 15 is formed above the tangent point 14 between the rainwater collection roller 2 and the arc span section 1.3. Figure 5 As shown, a water recovery channel 4 is formed in the rainwater collecting drum 2, and a row of water inlet holes 3 are hollowed out along the length direction of the side wall of the rainwater collecting drum 2. When the rainwater collecting drum 2 rotates to a certain position around the axis, the several water inlet holes 3 on one side of the rainwater collecting drum 2 are connected to the water accumulation ditch 15; one end of the water recovery channel 4 is a rainwater leakage outlet 4.1, and a water receiving funnel 5 is correspondingly arranged below the rainwater leakage outlet 4.1, and the water outlet end of the water receiving funnel 5 is finally connected to the rainwater collection pipe 19.

[0035] Working method and principle:

[0036] When it is sunny and the solar radiation intensity is not excessive, mode a is entered. In mode a, the upper belt 1.1 of each solar collector 42 is a light reflecting section with a light reflecting coating on the surface, and because the belt tensioning roller 12 bends the middle part of the upper belt 1.1 upward, the gentle slope section 1.1a and the steep slope section 1.1b form a certain angle with the surface where the solar energy storage and power generation panel 13 is located. Under direct sunlight, the sunlight passes through each light-transmitting gap 11 and is projected onto the gentle slope section 1.1a and the steep slope section 1.1b of the upper belt 1.1 with the light reflecting coating, and is then obliquely reflected to the back side of the vacuum collector tube 10, thereby achieving the purpose of fully utilizing the heat of sunlight radiation. The design of the gentle slope section 1.1a and the steep slope section 1.1b avoids the problem that the direct sunlight returns along the original path and cannot be utilized;

[0037] When it is sunny and the solar radiation intensity is excessive, it is necessary to change from mode a to mode b. On the basis of mode a, the motor drives the first transmission roller 6 and the second transmission roller 7 to make the closed-loop conveyor belt body 1 be transmitted along its own contour path until the upper belt body 1.1 changes from the original light-reflecting section with coating to the colorless and transparent section without coating, and the lower belt body 1.2 changes from the original colorless and transparent section without coating to the light-reflecting section with light-reflecting coating, and then enters mode b; at this time, under direct sunlight, the sunlight is projected on the gentle slope section 1.1a and the steep slope section 1.1b of the transparent upper belt body 1.1 without coating through each light-transmitting gap 11, and finally projects to the solar energy storage power generation panel 13, so that the solar energy storage power generation panel 13 generates electricity and charges the electric energy storage unit 17, and at the same time reduces the purpose of the comprehensive light intensity of each vacuum collector tube 10 under direct sunlight, thereby achieving the purpose of comprehensive energy utilization under the state of excessive solar radiation intensity;

[0038] When it is raining, it is necessary to switch to mode C, and the motor drives the first transmission roller 6 and the second transmission roller 7 to make the closed-loop conveyor belt body 1 transmit along its own contour path, so that the arc span section 1.3 drives the rainwater collecting roller 2 which is closely tangent to it to rotate slowly until the several water inlet holes 3 on one side of the rainwater collecting roller 2 are connected to the water collection ditch 15 and then stop; at this time, the rainwater will flow downward to the water collection ditch 15 along the surface of the gentle slope section 1.1a and the steep slope section 1.1b of the upper belt body 1.1, and the water accumulated in the water collection ditch 15 reaches the water recovery channel 4 in the rainwater collecting roller 2 through the several water inlet holes 3, and then the rainwater leakage port 4.1 at one end of the water recovery channel 4 leaks the water into the water receiving funnel 5, and finally the water receiving funnel 5 flows the water into the rainwater collection pipe 19 for filtration and recycling.

[0039] The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Solar energy collection and energy storage auxiliary energy comprehensive utilization system, characterized by: The invention comprises a solar thermal collector (42); the solar thermal collector (42) comprises a vacuum solar thermal collector tube array (8), the vacuum solar thermal collector tube array (8) is composed of a plurality of vacuum thermal collector tubes (10) distributed in parallel, and a light-permeable gap (11) exists between any two adjacent vacuum thermal collector tubes (10); a solar energy storage and power generation panel (13) with a light-receiving surface facing upward is arranged in parallel below the solar thermal collector array (18); The solar energy storage power generation panel (13) is rotatably mounted with a first transmission roller (6) and a second transmission roller (7) at the upper and lower ends thereof; the solar energy storage power generation panel (13) also includes a closed-loop conveyor belt body (1), the inner sides of the two ends of the closed-loop conveyor belt body (1) respectively cross the first transmission roller (6) and the second transmission roller (7); the closed-loop conveyor belt body (1) includes an upper belt body (1.1) and a lower belt body (1.2), the lower belt body (1.2) is parallel to the solar energy storage power generation panel (13), and the solar energy storage power generation panel (13) is sandwiched between the upper belt body (1.1) and the lower belt body (1.2); The roller driving steering gear (26) is drivingly connected to the first transmission roller (6) or the second transmission roller (7); In mode a: the upper belt body (1.1) is a light reflective section with a light reflective coating on the surface, and after sunlight is projected onto the surface of the upper belt body (1.1) with the light reflective coating, it is reflected by the light reflective coating; the lower belt body (1.2) is a colorless and transparent section without coating; on the basis of mode a, the motor drives the first transmission roller (6) and the second transmission roller (7) to make the closed-loop conveyor belt body (1) be transmitted along its own contour path until the upper belt body (1.1) changes from the original light reflective section to the colorless and transparent section without coating, and the lower belt body (1.2) changes from the original colorless and transparent section without coating to the light reflective section with the light reflective coating, and then enters mode b; A belt tensioning roller (12) is provided above the solar energy storage and power generation panel (13); the inner side of the middle part of the upper belt (1.1) crosses the belt tensioning roller (12), and the belt tensioning roller (12) bends the middle part of the upper belt (1.1) upward, so that the upper and lower parts of the upper belt (1.1) are respectively a gentle slope section (1.1a) and a steep slope section (1.1b), and the closed-loop conveyor belt (1) is tensioned; The gentle slope section (1.1a) and the steep slope section (1.1b) both form an angle with the surface where the solar energy storage and power generation panel (13) is located; The steep slope section (1.1b) of the closed-loop conveyor belt body (1) is connected to the lower belt body (1.2) via a circular arc winding section (1.3) winding around the outside of the second transmission roller (7); The invention comprises a rainwater collection drum (2), wherein the rainwater collection drum (2) and the arc span winding section (1.3) are tightly rolled and tangent to each other, a water collection ditch (15) is formed above the tangent point (14) between the rainwater collection drum (2) and the arc span winding section (1.3), a water recovery channel (4) is formed inside the rainwater collection drum (2), a row of water inlet holes (3) are hollowed out along the length direction of the side wall of the rainwater collection drum (2), and when the rainwater collection drum (2) rotates around the axis to a certain position, a plurality of water inlet holes (3) on one side of the rainwater collection drum (2) are all connected to the water collection ditch (15); one end of the water recovery channel (4) is a rainwater leakage outlet (4.1), and a water receiving funnel (5) is correspondingly arranged below the rainwater leakage outlet (4.1).

2. The working method of the solar energy collection and energy storage auxiliary energy comprehensive utilization system according to claim 1 is characterized in that: When the intensity of solar radiation is not excessive, the a mode is entered. In the a mode, when the sunlight is directly irradiated, the sunlight is projected onto the surface of the gentle slope section (1.1a) and the steep slope section (1.1b) of the upper belt body (1.1) with the light reflection coating through the light-transmitting gaps (11), and then is obliquely reflected to the back side of the vacuum heat collecting tube (10), thereby achieving the purpose of fully utilizing the heat of solar radiation. The design of the gentle slope section (1.1a) and the steep slope section (1.1b) avoids the problem of direct sunlight returning along the original path. When the intensity of solar radiation is excessive, on the basis of mode a, the motor drives the first transmission roller (6) or the second transmission roller (7) to transmit the closed-loop conveyor belt body (1) along its own contour path until the upper belt body (1.1) changes from the original light-reflecting section with coating to the colorless transparent section without coating, and the lower belt body (1.2) changes from the original colorless transparent section without coating to the light-reflecting section with light-reflecting coating, and then enters mode b; at this time, under direct sunlight, the sunlight is projected on the gentle slope section (1.1a) and the steep slope section (1.1b) of the transparent upper belt body (1.1) without coating through the light-transmitting gaps (11), and then directly passes through and is finally projected onto the solar energy storage power generation panel (13).

3. The working method of the solar energy collection and energy storage auxiliary energy comprehensive utilization system according to claim 2 is characterized in that: On rainy days, the motor drives the first transmission roller (6) and the second transmission roller (7) to transmit the closed-loop conveyor belt body (1) along its own contour path, so that the arc cross-winding section (1.3) drives the rainwater collection roller (2) closely tangent thereto to rotate slowly, and the rotation stops when a plurality of water inlet holes (3) on one side of the rainwater collection roller (2) are all connected to the water collection ditch (15); at this time, the rainwater flows downward along the surface of the gentle slope section (1.1a) and the steep slope section (1.1b) of the upper belt body (1.1) to the water collection ditch (15), and the water collected in the water collection ditch (15) reaches the water recovery channel (4) in the rainwater collection roller (2) through the plurality of water inlet holes (3), and then the rainwater leakage port (4.1) at one end of the water recovery channel (4) leaks the water into the water receiving funnel (5).

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