CN116391545A - A photovoltaic module integrated water cycle intelligent temperature adjustment device in a greenhouse - Google Patents

Abstract

The invention relates to the technical field of energy conservation, in particular to a photovoltaic module integrated intelligent water circulation temperature regulating device in a greenhouse, wherein the greenhouse system comprises a greenhouse body placed on the ground and a photovoltaic water circulation temperature regulating system assembled on the greenhouse body, solar photovoltaic power generation is guaranteed through a water circulation temperature control photovoltaic panel in the photovoltaic water circulation temperature regulating system, meanwhile, the lighting requirement of the whole greenhouse crops is guaranteed, the greenhouse body adopts a steel framework, a single row of solar photovoltaic modules are covered on the greenhouse body, the optimal installation inclination angle of the photovoltaic modules is selected according to the local latitude and the preference degree of the crops, and the lighting requirement of the whole greenhouse crops is guaranteed while the solar photovoltaic power generation is guaranteed; through this internal like air humiture, carbon dioxide, illuminance, soil humiture etc. of effectual master greenhouse of environmental monitor monitoring, this internal temperature of regulation greenhouse of being convenient for.

Description

A photovoltaic module integrated water circulation intelligent temperature adjustment device in a greenhouse

technical field

The invention relates to the technical field of energy saving, in particular to a photovoltaic module integrated water circulation intelligent temperature adjustment device in a greenhouse.

Background technique

From the perspective of the development of the photovoltaic application market, photovoltaics have extended from the early development of single ground power stations in the west to the promotion of distributed photovoltaic power stations in the economically developed southeast regions. China has never stopped exploring the field of photovoltaic applications, and photovoltaic agriculture is undoubtedly another new breakthrough in the field of photovoltaic applications in my country. Photovoltaic agriculture is the use of solar photovoltaic power generation, which has the characteristics of no pollution and zero emissions. It is organically combined with high-tech greenhouses, and photovoltaic solar power generation devices are laid on part or all of the sunny sides of the greenhouses, so that the greenhouses can not only generate electricity, but also provide suitable growth for crops. environment, so as to create better economic and social benefits.

Although the photovoltaic greenhouse has the following advantages:

①Add solar panels on the surface of the greenhouse to make the greenhouse have the function of generating electricity and make full use of solar energy resources;

② Power generation and agricultural production are carried out at the same time, saving land resources;

③ It can prevent wind and reduce evaporation, and can turn deserts and arid areas into arable land under protected conditions.

However, in the application process, the following contradictions cannot be avoided:

① Photovoltaic modules are arranged above the crops, and the shadow of photovoltaic brackets and modules has a certain impact on the growth of crops, and there is a certain phenomenon of competition between photovoltaic power generation and plant growth.

②It is easy to produce uneven cold and hot areas. When the greenhouse area is large, it is easy to have dead angles for ventilation.

③The planting of crops is greatly affected by the local environment and temperature, and the planting is relatively extensive, so it is not easy to form refined, large-scale, and independent production.

Contents of the invention

In order to overcome the above-mentioned defects in the prior art, the purpose of the present invention is to provide an intelligent temperature adjustment device for integrated water circulation of photovoltaic modules in the greenhouse, so as to solve the problem that the existing technology cannot adjust the temperature in the greenhouse, so that the temperature distribution in the greenhouse is not stable. Technical problems of uniformity and uneven light exposure of crops.

Aiming at the technical problem of how to improve the temperature regulation in the greenhouse in the prior art, the present invention provides a greenhouse structure that utilizes the integrated water circulation of photovoltaic modules for intelligent temperature regulation.

The present invention is achieved through the following technical solutions:

A photovoltaic module integrated water circulation intelligent temperature adjustment device in a greenhouse, comprising a greenhouse body placed on the ground and a photovoltaic water circulation temperature adjustment system assembled on the greenhouse body; the greenhouse body includes a top and side walls, and the greenhouse body Circulation doors are set at both ends, and a water delivery system is installed in the greenhouse body. The photovoltaic water cycle temperature regulation system includes a power control cabinet, an environmental monitor, two sets of refrigeration controllers, and several water cycle temperature-controlled photovoltaic panels; several water cycle temperature-controlled photovoltaic panels are in turn Assembled side by side on the top of the greenhouse body, and several water circulation temperature-controlled photovoltaic panels are installed at an angle on the top of the greenhouse body. The surface of the water circulation temperature-controlled photovoltaic panel near the sunny side is equipped with a solar photovoltaic panel, and the water circulation temperature-controlled photovoltaic panel is assembled on the top of the greenhouse body. The side panel is provided with continuous U-shaped pipes, and the two ends of the continuous U-shaped pipes are respectively connected to the water delivery system; the power control cabinet and the environmental monitor are respectively installed on the greenhouse body, and the two sets of refrigeration regulators are assembled on the greenhouse body. One end, and the cold air outlets of the two sets of refrigeration regulators are set in the greenhouse body, the power supply terminals of the power control cabinet are respectively connected with the two sets of refrigeration regulators, the environmental monitor and the power supply terminals of the water delivery system, and the greenhouse body is equipped with There are several sensors, and the output ends of the several sensors are respectively connected to the environment monitor.

Preferably, several irrigation devices are arranged inside the greenhouse body, the input ends of the several irrigation devices are all connected to the water delivery system, the power terminals of the several irrigation devices are all connected to the power control cabinet, and the water outlets of the several irrigation devices are respectively aligned with the plants planted in the greenhouse body. crops.

Preferably, the two ends of the continuous U-shaped pipe are respectively provided with solenoid valve water pipe joints for controlling the water delivery volume.

Preferably, the PVDF/PVF back film is coated on the water circulation temperature-controlled photovoltaic panel.

Preferably, two sets of convection fans are respectively provided at the end of the greenhouse body away from the two sets of refrigeration regulators, wherein the two sets of convection fans and the two sets of refrigeration regulators are arranged oppositely at the two ends of the greenhouse body, and the two sets The power terminals of the convection fans are respectively connected to the power terminals of the power control cabinet.

Further, two sets of convection fans are provided with negative pressure fans at the inner side of the greenhouse body, and rainproof louvers are provided at the outer side of the greenhouse body.

Preferably, several sensors include air temperature and humidity sensor, CO ₂ sensor, illuminance sensor and soil temperature and humidity sensor.

Preferably, a controller is provided in the power control cabinet, the input end of the controller is connected to the signal input module, the output end of the controller is connected to the drive module, and the input end of the signal input module is connected to the environmental monitor; the drive module The output end of the connection is connected with two groups of refrigeration regulators and water delivery system.

Compared with the prior art, the present invention has the following beneficial technical effects:

The invention provides a photovoltaic module integrated water circulation intelligent temperature adjustment device in a greenhouse. The greenhouse system includes a greenhouse body placed on the ground and a photovoltaic water circulation temperature adjustment system assembled on the greenhouse body. In the system, the water cycle temperature-controlled photovoltaic panels ensure solar photovoltaic power generation, and at the same time ensure the lighting requirements of the entire greenhouse crops. The greenhouse body adopts a steel frame, and the greenhouse body is covered with a single row of solar photovoltaic modules. The best installation inclination angle of photovoltaic modules is selected to ensure the lighting requirements of the entire greenhouse crops while ensuring solar photovoltaic power generation; through the environmental monitor, the greenhouse itself can be effectively monitored such as air temperature and humidity, carbon dioxide, illuminance, and soil temperature. Humidity, etc. are monitored to effectively grasp the environmental information in the greenhouse body and facilitate the adjustment of the temperature in the greenhouse body.

Further, for the temperature control in the greenhouse body, when the environmental monitor detects that the temperature in the greenhouse body is too high, a reasonable cooling method can be selected according to the actual situation; if the temperature rise caused by the high carbon dioxide concentration in the greenhouse body, the power The control cabinet controls to turn on the convection fan, which can discharge moisture while lowering the room temperature; if affected by high temperature weather, the soil temperature and humidity in the greenhouse are out of balance, the power control cabinet controls to turn on the irrigation device, which can effectively reduce the humidity while replenishing water for the crops. The room temperature in the greenhouse itself. When the environmental monitor detects that the temperature inside the shed is too low, the light energy collected by the photovoltaic module can be used to heat the water flow circulation of the back pipe, that is, the hot water circulation and the air perform heat exchange, so as to realize the temperature rise in the greenhouse itself, and also can Keep the surface temperature of photovoltaic modules in an optimal state all the time.

Description of drawings

Fig. 1 is a schematic structural diagram of a greenhouse system with integrated water circulation temperature regulation of photovoltaic modules in the present invention;

Fig. 2 is a side structural diagram of the convection fan of the greenhouse body in the present invention;

Fig. 3 is a structural schematic diagram of the solar photovoltaic panel surface of the water circulation temperature-controlled photovoltaic panel in the present invention;

Fig. 4 is a structural schematic diagram of a continuous U-shaped tube surface of a water circulation temperature-controlled photovoltaic panel in the present invention;

Fig. 5 is a schematic diagram of the front structure of the convection fan in the present invention;

Fig. 6 is a schematic diagram of the back structure of the convection fan in the present invention.

In the figure: 1-water cycle temperature control photovoltaic panel; 2-power control cabinet; 3-environment monitor; 4-refrigeration controller; 5-convection fan; 6-irrigation device; 7-greenhouse body; 51-negative pressure fan ; 52 - Rainproof louver cover.

Detailed ways

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a sequence of steps or elements is not necessarily limited to the expressly listed instead, may include other steps or elements not explicitly listed or inherent to the process, method, product or apparatus.

The present invention is described in further detail below in conjunction with accompanying drawing:

Referring to Fig. 1 , in one embodiment of the present invention, a photovoltaic module integrated water circulation intelligent temperature adjustment device in a greenhouse is provided, including a greenhouse body 7 placed on the ground and a photovoltaic water circulation temperature system assembled on the greenhouse body 7 Regulating system; the greenhouse body 7 includes a top and side walls, and the two ends of the greenhouse body 7 are provided with circulation doors respectively, and a water delivery system is provided in the greenhouse body 7, and the photovoltaic water circulation temperature adjustment system includes a power control cabinet 2, an environmental monitor 3, Two sets of refrigeration regulators 4 and several water circulation temperature-controlled photovoltaic panels 1; several water circulation temperature-controlled photovoltaic panels 1 are assembled side by side on the top of the greenhouse body 7 in sequence, and several water circulation temperature-controlled photovoltaic panels 1 are installed at an angle on the top of the greenhouse body 7, and the water circulation The surface of the temperature-controlled photovoltaic panel 1 near the sunlight side is provided with a solar photovoltaic panel, and the surface of the water-circulating temperature-controlled photovoltaic panel 1 assembled on the top side of the greenhouse body 7 is provided with a continuous U-shaped tube, wherein the two ends of the continuous U-shaped tube are respectively connected to the The water delivery system is connected; the power control cabinet 2 and the environmental monitor 3 are respectively installed on the greenhouse body 7, two sets of refrigeration regulators 4 are assembled on one side of the greenhouse body 7, and the cold air discharge ports of the two sets of refrigeration regulators 4 In the greenhouse body 7, the power supply terminals of the power control cabinet 2 are respectively connected to two groups of refrigeration regulators 4, the environmental monitor 3 and the power supply terminals of the water delivery system. Several sensors are arranged in the greenhouse body 7, and the output terminals of the several sensors are respectively Connect the environmental monitor 3.

In the present invention, the radiation amount of the photovoltaic array needs to be considered during the construction phase, and the optimal inclination angle of the photovoltaic array is installed in combination with the local latitude and the radiation preferences of the crops in the shed.

For example, for shade-loving crops, you can use single crystal and polycrystalline modules that are more common in the market; for sun-loving crops, you can consider using light-transmitting modules to ensure that plants can normally receive radiation.

Specifically, the several sensors include an air temperature and humidity sensor, a CO ₂ sensor, an illumination sensor and a soil temperature and humidity sensor.

Specifically, a controller is provided in the power control cabinet 2, the input end of the controller is connected to the signal input module, the output end of the controller is connected to the drive module, and the input end of the signal input module is connected to the environmental monitor 3; The output end of the drive module is connected with two sets of refrigeration regulators 4 and the water delivery system.

Specifically, several irrigation devices 6 are arranged inside the greenhouse body 7, the input ends of several irrigation devices 6 are all connected to the water delivery system, the power terminals of several irrigation devices 6 are all connected to the power control cabinet 2, and the water outlets of several irrigation devices 6 are connected to the power control cabinet 2 respectively. The crops planted in the quasi-greenhouse body 7 .

Specifically, the two ends of the continuous U-shaped pipe are respectively equipped with solenoid valve water pipe joints, which are used to connect to the water delivery system. When the surface temperature of the components is too high, the water circulation inside the pipe will have a certain cooling effect.

Specifically, the PVDF/PVF back film is coated on the water cycle temperature-controlled photovoltaic panel 1, which will not stick to dust and scale, and has good anti-fouling performance. It not only makes the ultraviolet rays more stable, but also prolongs the service life of the photovoltaic module.

Specifically, as shown in FIG. 2, two sets of convection fans 5 are respectively provided at the end of the greenhouse body 7 away from the two sets of refrigeration regulators 4, wherein the two sets of convection fans 5 and the two sets of refrigeration regulators 4 are located in the greenhouse. The two ends of the body 7 are located opposite to each other, and the power terminals of the two groups of convection fans 5 are respectively connected to the power terminals of the power control cabinet 2 .

Specifically, as shown in FIG. 5 and FIG. 6 , two sets of convection fans 5 are provided with negative pressure fans 51 at the inner end of the greenhouse body 7 , and rainproof louvers 52 are provided at the outer end of the greenhouse body 7 .

The conversion efficiency of photovoltaic modules is related to its operating temperature, and the photoelectric conversion efficiency will decrease as the temperature rises. When the temperature of crystalline silicon is 25°C higher than the standard operating temperature, the electrical efficiency of the cell will decrease by about 0.4% to 0.65% for every 1°C increase in cell temperature; When the temperature is high, the water circulation inside the pipeline will play a role in cooling down the temperature, so as to avoid the influence of power generation efficiency due to the high temperature of the components; Heating can not only keep the crops in the greenhouse warm, but also keep the surface temperature of the photovoltaic module in an optimal state. Using PVDF/PVF back film to coat the back sheet, it will not stick to dust and scale, and has good anti-fouling performance, which not only makes the ultraviolet rays more stable, but also prolongs the service life of photovoltaic modules.

In the present invention, the power control cabinet 2 is used to control the power supply, which can protect the daily operation of the equipment, and the electric cabinet can divide the total input DC into multiple channels, each of which has a protection device (fuse, circuit breaker, etc.), anti- Lei et al., and can monitor the voltage and current of each channel, so that its photovoltaic modules can generate electricity independently and operate in parallel to the grid.

In the present invention, the environmental monitor 3 can monitor the internal environmental data of the greenhouse body in real time: such as air temperature and humidity, carbon dioxide, illuminance, soil temperature and humidity, and the like. Through the collected data, the control equipment can automatically control the execution equipment in the greenhouse, such as ventilation equipment, solenoid valve irrigation, etc., so that all aspects of the environmental indicators in the greenhouse tend to an ideal level, so that the crops have a good growth environment. While saving labor costs, it also meets the needs of monitoring and traceability.

In the present invention, the refrigeration regulator 4 uses a semiconductor refrigeration device to convert solar energy into direct current through a photovoltaic module, which can be directly supplied to the semiconductor refrigeration sheet for refrigeration. The working process has low noise, no vibration, small size, and fast cooling speed. It can be used for cooling indoors in greenhouses to avoid crop yield reduction caused by high temperatures in summer.

The convection fan 5 in the present invention is mainly due to thermal buoyancy (hot air density is low and floats up) and ventilation effect (outside air flows in from the side window, causing a pressure difference, and then forming wind), with low power consumption, and it can effectively control the greenhouse Air temperature, humidity and _CO2 concentration meet the needs of normal growth requirements of indoor cultivated plants.

In the present invention, the irrigation device 6 can be allocated and supplied based on the agricultural Internet of Things technology according to the water demand, fertilizer demand law, soil and nutrient content of different crops, and realizes the irrigation and fertilization of crops while improving the water efficiency of crop irrigation. Timing and quantitative control can not only save water, fertilizer and electricity, but also reduce labor input and labor costs.

The photovoltaic module integrated water circulation intelligent temperature adjustment device in the greenhouse in the present invention, when in use, the environmental monitor can monitor the environmental data in the greenhouse in real time: such as air temperature and humidity, carbon dioxide, illuminance, soil temperature and humidity, etc.

The data collected in the power control cabinet 2 is checked to see if there is any abnormality. For example, when the carbon dioxide concentration is too high, the air is too dry, and the soil temperature and humidity are not up to standard, etc., the control system will automatically control the execution equipment in the greenhouse itself, such as Ventilation equipment, solenoid valve irrigation, etc., make the various environmental indicators in the greenhouse tend to an ideal level, so that the crops have a good growth environment. While saving labor costs, it also meets the needs of monitoring and traceability.

The greenhouse system with integrated water circulation and temperature adjustment of photovoltaic modules provided by the present invention can form a large-span steel structure according to agricultural needs, and the space inside the greenhouse body is relatively large, which can form mechanized operations and even form sightseeing photovoltaic agriculture. It can improve the degree of agricultural automation. This type of greenhouse can be equipped with ancillary facilities: such as the internal insulation system of the greenhouse, the heating system, the ventilation and cooling system, the intelligent control air humidification system, etc., to form an automated greenhouse agriculture. It can save manual labor, because the greenhouse can be mechanized and mainly automated, so that the manual labor is relatively small and the cost of labor is reduced. The structure of photovoltaic modules and agricultural greenhouses is relatively independent, and the interaction between photovoltaic modules and crops is small, and there is less glare.

In the present invention, the water cycle temperature-controlled photovoltaic panel can adjust its own temperature and also play a seasonal cooling and heating control on the internal temperature of the greenhouse body; the present invention realizes linkage control, and the environmental control system can automatically control the motor in the greenhouse without manual intervention , greatly reducing the labor workload of daily artificial ventilation and watering operations, saving labor costs and improving production efficiency. The invention can be connected to various sensor monitoring equipment, so that the system is flexible and open, and can be connected to various sensor monitoring, equipment, and facilities according to the agricultural production needs of different users to meet individual needs. The invention monitors the environment in real time, acquires the environmental data in the greenhouse, and formulates a control strategy for the crop growth environment, so as to maximize the benefit.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the present invention can still be Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall fall within the protection scope of the claims of the present invention.

Claims (8)

1. The integrated intelligent water circulation temperature regulating device for the photovoltaic module in the greenhouse is characterized by comprising a greenhouse body (7) placed on the ground and a photovoltaic water circulation temperature regulating system assembled on the greenhouse body (7); the greenhouse body (7) comprises a top and side walls, two ends of the greenhouse body (7) are respectively provided with a flow gate, a water delivery system is arranged in the greenhouse body (7), and the photovoltaic water circulation temperature regulating system comprises an electric control cabinet (2), an environment monitor (3), two groups of refrigeration regulators (4) and a plurality of water circulation temperature control photovoltaic panels (1); the water circulation temperature control photovoltaic panels (1) are sequentially assembled at the top of the greenhouse body (7) side by side, the water circulation temperature control photovoltaic panels (1) are arranged at the top of the greenhouse body (7) at an inclination angle, solar photovoltaic panels are arranged on the surfaces, close to the sunlight side, of the water circulation temperature control photovoltaic panels (1), continuous U-shaped pipes are arranged on the surfaces, assembled at the top side of the greenhouse body (7), of the water circulation temperature control photovoltaic panels (1), and two ends of each continuous U-shaped pipe are connected with a water delivery system respectively; the utility model provides a power control cabinet (2) and environmental monitor (3) are installed respectively on big-arch shelter body (7), and two sets of refrigeration regulator (4) assemble in one side tip of big-arch shelter body (7), and in the air conditioning discharge port of two sets of refrigeration regulator (4) set up big-arch shelter body (7), the power end of power control cabinet (2) is connected with two sets of refrigeration regulator (4), environmental monitor (3) and water delivery system's power end respectively, be equipped with a plurality of sensors in big-arch shelter body (7), environmental monitor (3) are connected respectively to the output of a plurality of sensors.

2. The intelligent temperature regulating device for integrated water circulation of photovoltaic modules in a greenhouse according to claim 1, wherein a plurality of irrigation devices (6) are arranged inside the greenhouse body (7), the input ends of the irrigation devices (6) are connected with a water delivery system, the power supply ends of the irrigation devices (6) are connected with a power control cabinet (2), and the water outlet ends of the irrigation devices (6) are respectively aligned with crops planted in the greenhouse body (7).

3. The intelligent temperature regulating device for integrated water circulation of a photovoltaic module in a greenhouse according to claim 1, wherein electromagnetic valve water pipe connectors are respectively arranged at two ends of the continuous U-shaped pipe and are used for being connected with a water delivery system.

4. The integrated water circulation intelligent temperature regulating device for the photovoltaic module in the greenhouse according to claim 1, wherein the PVDF/PVF back film is coated on the water circulation temperature control photovoltaic panel (1).

5. The intelligent temperature regulating device for integrated water circulation of photovoltaic modules in a greenhouse according to claim 1, wherein two groups of convection ventilation fans (5) are respectively arranged at one side end part of the greenhouse body (7) far away from two groups of refrigeration regulators (4), the two groups of convection ventilation fans (5) and the two groups of refrigeration regulators (4) are oppositely arranged at two end positions of the greenhouse body (7), and power ends of the two groups of convection ventilation fans (5) are respectively connected with power ends of a power control cabinet (2).

6. The intelligent temperature regulating device for integrated water circulation of photovoltaic modules in a greenhouse according to claim 5, wherein the negative pressure fans (51) are arranged at the inner side ends of the greenhouse body (7) by two groups of convection ventilation fans (5), and the rainproof louver covers (52) are arranged at the outer side ends of the greenhouse body (7).

7. The intelligent temperature regulating device for integrated water circulation of photovoltaic modules in greenhouse according to claim 1, wherein the plurality of sensors comprise an air temperature and humidity sensor and a CO ₂ The sensor, the illuminance sensor and the soil temperature and humidity sensor.

8. The integrated intelligent temperature regulating device for the photovoltaic module in the greenhouse according to claim 1 is characterized in that a controller is arranged in an electric control cabinet (2), the input end of the controller is connected with a signal input module, the output end of the controller is connected with a driving module, and the input end of the signal input module is connected with an environment monitor (3); the output end of the driving module is connected with two groups of refrigeration regulators (4) and a water delivery system.

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