Floating type photovoltaic power generation steam-restraining irrigation system

Abstract

The invention discloses a floating type photovoltaic power generation steam suppression irrigation system which comprises a floating type submersible axial flow pump, an overwater pump room, an overwater photovoltaic system, a drip irrigation system and a physical covering device which are arranged in a reservoir. The overwater pump room and the overwater photovoltaic system are both installed above the floating type base, a filtering device, a fertilizing device and a power distribution cabinet are arranged in the overwater pump room, and the floating type submersible axial flow pump, the filtering device, the fertilizing device and the drip irrigation system are sequentially communicated; the floating type submersible axial flow pump, the filtering device, the fertilizing device and the overwater photovoltaic system are all electrically connected with the power distribution cabinet. According to the technical scheme, land occupation can be reduced, electricity self-sufficiency is achieved, water surface evaporation is reduced, and cost is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of water surface evaporation prevention, and in particular relates to a floating photovoltaic power generation evaporation suppression irrigation system. Background Art

[0002] Reservoirs and field irrigation pump houses are important for large-scale irrigation, especially for irrigation of farmland in arid areas, as they are important for regulating water volume, balancing supply and demand, improving irrigation efficiency, and stabilizing agricultural production. However, traditional reservoirs and field irrigation pump houses have the following problems: First, the construction and completion of traditional field irrigation pump houses permanently occupy arable land; second, the use of pump house equipment needs to be connected to the power grid, and the electricity cost and frequency of use vary with the crops and their irrigation systems, and transmission losses occur at the same time; third, the water surface of the reservoir is exposed over a large area, and for arid and semi-arid areas, the water surface evaporation loss is severe.

[0003] In summary, the existing water reservoirs and field irrigation pump houses have problems such as occupying arable land, high electricity costs and losses, and severe water surface evaporation losses. Summary of the invention

[0004] The purpose of the present invention is to provide a floating photovoltaic power generation evaporation suppression irrigation system to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides a floating photovoltaic power generation and evaporation suppression irrigation system, comprising a floating submersible axial flow pump, an above-water pump house, an above-water photovoltaic system, a drip irrigation system and a physical covering device arranged in a water reservoir, wherein the physical covering device is laid on the surface of the water body, the above-water pump house and the above-water photovoltaic system are both installed above a floating base, a filtering device, a fertilizing device and a power distribution cabinet are arranged inside the above-water pump house, the floating submersible axial flow pump, the filtering device, the fertilizing device and the drip irrigation system are connected in sequence, and the floating submersible axial flow pump, the filtering device, the fertilizing device and the above-water photovoltaic system are all electrically connected to the power distribution cabinet.

[0006] Optionally, the above-water photovoltaic system includes a plurality of photovoltaic modules, each of which includes a plurality of photovoltaic panels, and each of which is fixedly mounted on the floating base via a steel frame.

[0007] Optionally, different photovoltaic modules are connected in parallel, and photovoltaic panels in the same group of photovoltaic modules are connected in series.

[0008] Optionally, the floating submersible axial flow pump includes a submersible axial flow pump and a floating device, the floating device is hollow inside and semi-submerged in the water surface, the submersible axial flow pump is installed under the floating device, a removable mesh cover is installed at the water inlet end of the submersible axial flow pump, and the water outlet end of the submersible axial flow pump is connected to the filtering device.

[0009] Optionally, the filtering device includes sand and gravel filters that are connected in sequence, one end of the sand and gravel filter is connected to the floating submersible axial flow pump, and the other end is connected to the fertilization device.

[0010] Optionally, a remote pressure gauge and a pressure relief valve are provided on the connecting pipeline between the sand filter and the floating submersible axial flow pump.

[0011] Optionally, the filtering device further comprises a mesh filter, one end of which is connected to the sand filter, and the other end of which is connected to the fertilizing device.

[0012] Optionally, the fertilization device includes a fertilization tank, a ball valve is provided on the connecting pipeline between the fertilization tank and the filtering device, and a water meter and a pressure relief valve are provided on the connecting pipeline between the discharge end of the fertilization tank and the drip irrigation system.

[0013] The technical effects of the present invention are:

[0014] The present invention reduces the occupation of cultivated land by transferring the pump house to the reservoir, thereby avoiding the construction difficulties caused by complex terrain and reducing the impact on the entry of agricultural production machines into the field;

[0015] The present invention realizes self-sufficiency of electricity for the pump room through the water photovoltaic system. Multiple photovoltaic systems can also be established in conjunction with a large-area water reservoir to merge the remaining electricity into the power grid or supply it to surrounding residents and equipment.

[0016] The present invention physically covers the water surface of the reservoir through a floating base, a water pump house and a water photovoltaic system, thereby reducing evaporation losses from the water surface and increasing the utilization efficiency of irrigation water;

[0017] The present invention reduces the laying distance of photovoltaic cables by establishing an above-water pump house, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of a floating photovoltaic power generation and evaporation suppression irrigation system in an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the pipeline connection and facility structure of a floating photovoltaic power generation and evaporation suppression irrigation system in an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of a single photovoltaic unit in a floating photovoltaic power generation and evaporation suppression irrigation system in an embodiment of the present invention.

[0023] Explanation of the numbers: 1. Floating submersible axial flow pump; 11. Floating device; 12. Submersible axial flow pump; 13. Water inlet and outlet pipes; 2. Floating pump room; 21. Sand filter; 22. Mesh filter; 23. Fertilizer tank; 24. Ball valve; 25. Water meter; 26. Pressure-stabilizing and pressure-relieving valve; 27. Fertilizer pump; 28. Remote pressure gauge; 29. ​​Pressure relief valve; 3. Floating photovoltaic system; 30. Distribution cabinet; 31. Photovoltaic panel; 32. Cable; 33. Steel frame; 4. Physical covering device; 5. Floating base. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element in the middle; when an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an element in the middle at the same time; the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only;

[0027] The words “include,” “including,” “have,” “contain,” etc. used in this article are open-ended terms, meaning including but not limited to.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] like Figure 1-Figure 3 As shown, in this embodiment, a floating photovoltaic power generation and evaporation suppression irrigation system is provided, including a floating submersible axial flow pump 1 arranged in a water reservoir, an above-water pump house 2, an above-water photovoltaic system 3, a drip irrigation system and a physical covering device 4, wherein the physical covering device 4 is laid on the surface of the water body, the above-water pump house 2 and the above-water photovoltaic system 3 are both installed above a floating base 5, and a filtering device, a fertilizing device and a power distribution cabinet 30 are arranged inside the above-water pump house 2, the floating submersible axial flow pump 1, the filtering device, the fertilizing device and the drip irrigation system are connected in sequence, and the floating submersible axial flow pump 1, the filtering device, the fertilizing device and the above-water photovoltaic system 3 are all electrically connected to the power distribution cabinet 30.

[0031] This embodiment discloses a floating photovoltaic power generation and evaporation suppression irrigation system, which is composed of a floating submersible axial flow pump 1, a water pump house 2, a water photovoltaic system 3, a water surface evaporation suppression covering device, a floating base 5 and various auxiliary structures. The floating submersible axial flow pump 1 is directly connected to the water pump house 2 through an underwater pipeline and a transfer elbow. The pipeline is located at the bottom of the floating base 5 for connection and reinforcement, and is connected to the irrigation system after sediment filtration and fertilizer application; the water pump house 2 is realized by the floating base 5; the photovoltaic panels 31 of the water photovoltaic system 3 are connected in series within the group, each group is connected in parallel, and multiple groups of water photovoltaic system 3 cables 32 are incorporated into the pump house, and an energy storage system and a photovoltaic inverter are set in the pump house; the water surface evaporation suppression covering device is arranged on the water surface that is not blocked by the floating base and photovoltaic components; the floating base 5 is spliced ​​by buoys or pontoons. The system disclosed in this embodiment can achieve self-sufficiency in electricity, evaporation suppression and energy saving on the basis of the traditional pump house, and can also greatly reduce the consumption of cables 32 while saving ground space.

[0032] Based on the drawbacks of traditional water reservoirs and field irrigation pump houses, this embodiment proposes an integrated irrigation system that combines water reservoir evaporation suppression, photovoltaic system power generation and water pump house 2. Based on a floating base, the field pump house is transferred to the water reservoir, and the water photovoltaic system 3 is used to achieve self-sufficiency in electricity for the pump house. Water photovoltaics, physical covering devices 4 and water pump stations are used to achieve physical covering of water evaporation.

[0033] The system structure of this embodiment mainly includes a floating submersible axial flow pump 1, an above-water pump house 2, an above-water photovoltaic system 3, a physical covering device 4, a floating base 5 and its auxiliary structures.

[0034] Figure 2 The floating submersible axial flow pump 1 is composed of a floating device 11 half-submerged in the water above and a submersible axial flow pump 12 below. The floating device 11 is hollow inside and has the ability to make the submersible axial flow pump 12 float normally in a stable working environment. The upper surface of 11 has a lifting handle for easy transportation, and the lower surface has a fixing ring for welding and fixing with the submersible axial flow pump 12. A detachable mesh cover is set at the water inlet of the submersible axial flow pump 12, and the water outlet is connected to the water inlet and outlet pipes 13 of the water pump room. It is worth emphasizing that due to the height difference between the submersible pump and the pump room, in order to enhance the stability of the pipeline under operating conditions and reduce pipeline consumption and reduce costs, the front end of the water inlet and outlet pipes 13 of the pump room is horizontally fixed below the floating base 5, and a 120° to 150° inclination transition is adopted near the pump room, and the upper part of the floating base 5 is connected and fixed by a steel frame.

[0035] Figure 2 The water pump house 2 floats on the water surface based on the floating base 5. The bearing capacity of the floating base 5 should be at least 1.5 to 2 times the total weight of the pump house and its facilities. The internal equipment has the basic functions and requirements of a traditional pump house. Among them, the input water flows through the sand filter 21 for primary filtration and then enters the mesh filter 22 for secondary filtration. The front pipe of the sand filter 21 is equipped with a remote pressure gauge 28 and a pressure relief valve 29. If there is no special water quality requirement (such as drip irrigation, etc.), a primary filtration can be used to simplify the pump house device. The side of the outlet pipe is connected to the fertilizer tank 23 to add fertilizer. The fertilizer tank 23 is controlled by a ball valve 24 and is connected to a fertilizer pump 27 to increase the fertilizer pressure. After passing through the pressure stabilizing and pressure relief valve 26, it flows out of the pump house and is connected to the drip irrigation system. The water and fertilizer flow is checked by the water meter 25.

[0036] Figure 1 and Figure 3 The floating photovoltaic system is based on a floating base 5 floating on the water surface, on which a stainless steel frame 33 that changes with the size structure and number of photovoltaic panels 31 is set to fix the photovoltaic panels, and the steel frame 33 is fixed to the floating base 5 with bolts. Figure 3The floating base 5 is laid in a "mouth" shape, and a single group of photovoltaic panels 31 is arranged in a 4×4 manner. Five groups of stainless steel frames 33 are set along the long side of the floating base 5 as the load-bearing and installation basis of the photovoltaic panels 31. The spacing between the stainless steel frames 33 varies with the specifications of the photovoltaic panels 31, so that the front and rear ends of the single group of photovoltaic panels 31 are respectively fixed to the adjacent steel frames 33. The two ends of the steel frame 33 are bolted to the upper surface of the floating base 5, and the photovoltaic components arranged in the above manner can greatly save the number of floating bases 5 used. The circuits of single photovoltaic panels 31 in the same group are connected in series, that is, the "positive poles" of adjacent panels are connected to the "negative poles", and different groups of photovoltaic components are connected in parallel, that is, the "positive poles" of adjacent components are connected to the "positive poles", and the "negative poles" are connected to the "negative poles". It should be noted that reasonable circuit adjustments should be made according to the locations of the panels 31, components, systems, and pump rooms. Figure 2 and Figure 3 The above-water photovoltaic system shown in the figure takes the two groups of photovoltaic modules on the left as an example. The panels 31 in the upper left module are arranged in four columns from left to right in the order of "positive and negative", "negative and positive", "positive and negative", and "negative and positive". The opposite is true in the lower left module, forming an "S-shaped" series circuit and connecting in parallel between the two groups of modules. The cable 32 is as shown in FIG. Figure 1 and Figure 3 As shown, the water pump house 2 of the access center.

[0037] Figure 1 The small area circled in the middle illustrates the laying effect of the physical covering device 4 of the water body. It is worth mentioning that the physical covering device 4 of the floating photovoltaic power generation and evaporation suppression irrigation system of this embodiment can be selected according to the actual use scenario, or not selected, and the coverage area ratio of the device can also be freely adjusted.

[0038] Figure 1-Figure 3 The floating base 5 shown in the figure adopts a common buoy device on the market. The device adopts a cubic structure with a length, width and height of 50, 50 and 60 cm respectively. The single unit has a load-bearing capacity of 60 kg, and mushroom nails are used to connect adjacent devices. The floating base 5 used for laying the water photovoltaic system 3 adopts a "mouth"-shaped layout, and the water pump room 2 is fully covered to improve the stability of the base. The floating base 5 can be selectively used to build a water platform leading to the water pump room 2 from land.

[0039] This embodiment reduces the occupation of cultivated land by transferring the pump house to the reservoir, thereby avoiding the construction difficulties caused by complex terrain and reducing the impact on the entry of agricultural production machinery into the field;

[0040] This embodiment achieves self-sufficiency in electricity consumption in the pump room through the water photovoltaic system. Multiple photovoltaic systems can also be established in conjunction with a large-scale water reservoir to integrate the remaining electricity into the power grid or supply it to surrounding residents and equipment;

[0041] This embodiment physically covers the water surface of the reservoir through a floating base, a water pump house and a water photovoltaic system, thereby reducing evaporation losses from the water surface and increasing the utilization efficiency of irrigation water;

[0042] This embodiment saves costs by building an above-water pump house and reducing the laying distance of photovoltaic cables.

[0043] In summary, this embodiment adopts the above-mentioned floating photovoltaic power generation and evaporation suppression irrigation system, which saves floor space and gives full play to the effect of the water platform in suppressing ineffective evaporation of water bodies. At the same time, it gives play to the advantages of photovoltaic power generation, realizes self-sufficiency in power supply for the pump room and alleviates regional electricity demand. The system also reduces cable consumption during the connection process of photovoltaic equipment, saving costs to a great extent.

[0044] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A floating photovoltaic power generation and evaporation suppression irrigation system, characterized in that: The invention comprises a floating submersible axial flow pump (1) arranged in a water reservoir, an above-water pump house (2), an above-water photovoltaic system (3), a drip irrigation system and a physical covering device (4), wherein the physical covering device (4) is laid on the surface of the water body, the above-water pump house (2) and the above-water photovoltaic system (3) are both installed above a floating base (5), a filtering device, a fertilizing device and a power distribution cabinet (30) are arranged inside the above-water pump house (2), the floating submersible axial flow pump (1), the filtering device, the fertilizing device and the drip irrigation system are connected in sequence, and the floating submersible axial flow pump (1), the filtering device, the fertilizing device and the above-water photovoltaic system (3) are all electrically connected to the power distribution cabinet (30).

2. A floating photovoltaic power generation and evaporation suppression irrigation system according to claim 1, characterized in that: The above-water photovoltaic system (3) comprises a plurality of photovoltaic modules, each of which comprises a plurality of photovoltaic panels (31), and each of the photovoltaic panels (31) is fixedly mounted above the floating base (5) via a steel frame (33).

3. A floating photovoltaic power generation and evaporation suppression irrigation system according to claim 2, characterized in that: Different photovoltaic modules are connected in parallel, and photovoltaic panels (31) in the same photovoltaic module group are connected in series.

4. The floating photovoltaic power generation and evaporation suppression irrigation system according to claim 1, characterized in that: The floating submersible axial flow pump (1) comprises a submersible axial flow pump (12) and a floating device (11); the floating device (11) is hollow inside and is semi-submerged in the water surface; the submersible axial flow pump (12) is installed below the floating device (11); a detachable mesh cover is installed at the water inlet end of the submersible axial flow pump (12); and the water outlet end of the submersible axial flow pump (12) is connected to the filtering device.

5. The floating photovoltaic power generation and evaporation suppression irrigation system according to claim 1, characterized in that: The filtering device comprises sand and gravel filters (21) which are connected in sequence, one end of the sand and gravel filter (21) is connected to the floating submersible axial flow pump (1), and the other end is connected to the fertilizing device.

6. A floating photovoltaic power generation and evaporation suppression irrigation system according to claim 5, characterized in that: A remote pressure gauge (28) and a pressure relief valve (29) are provided on the connecting pipeline between the sand filter (21) and the floating submersible axial flow pump (1).

7. The floating photovoltaic power generation and evaporation suppression irrigation system according to claim 5, characterized in that: The filtering device further comprises a mesh filter (22), one end of the mesh filter (22) being connected to the sand filter (21) and the other end being connected to the fertilizing device.

8. The floating photovoltaic power generation and evaporation suppression irrigation system according to claim 1, characterized in that: The fertilizing device comprises a fertilizing tank (23), a ball valve (24) is arranged on the connecting pipeline between the fertilizing tank (23) and the filtering device, and a water meter (25) and a pressure relief valve (29) are arranged on the connecting pipeline between the discharge end of the fertilizing tank (23) and the drip irrigation system.

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