Photovoltaic system with operation and maintenance window having closing and opening state maintaining function

Abstract

The utility model discloses a photovoltaic system with an operation and maintenance window having a closing and opening state maintaining function, comprising a photovoltaic array composed of a plurality of photovoltaic assemblies, the photovoltaic array is provided with at least one operation and maintenance window of a rectangular structure, and an openable photovoltaic assembly is arranged at a position corresponding to the operation and maintenance window. The openable photovoltaic assembly comprises a fixed frame of a rectangular structure and two split photovoltaic units arranged on the inner side of the fixed frame, each photovoltaic unit is of a rectangular structure and is provided with an outer frame, the outer frames are hinged to the fixed frame, and a closing and opening retaining mechanism is connected between the photovoltaic units and the fixed frame. The closing and opening maintaining mechanism maintains the two oppositely-opened photovoltaic units in a closed state when the photovoltaic system is in normal operation, and maintains the two oppositely-opened photovoltaic units in an open state when the photovoltaic system is in operation and maintenance. The operation and maintenance window facilitates field operation of later operation and maintenance personnel, safety risks are reduced, and construction safety is improved.

Description

Technical field

[0001] The utility model belongs to the technical field of photovoltaics. [Background Technology]

[0002] Currently, there are no fixed maintenance windows for regular inspection and maintenance of photovoltaic panels in photovoltaic power plants. During maintenance, maintenance personnel perform on-site positioning, remove the photovoltaic panels, and then re-inspect. Because the photovoltaic mounting brackets are already erected, horizontal and diagonal beams are placed beneath the panels. Removing the panels and then transferring them from the beams to the ground requires at least two personnel. For sunrooms and courtyards with high mounting brackets, transferring the panels from the top is dangerous and cannot be completed by a single operator, making the operation difficult and challenging. When transferring a panel from one bracket to another, it is difficult to arrange the panels neatly to prevent the moving panel frame from scratching or cracking the other panel's panel. This can result in panel damage, impacting power generation revenue, and increasing maintenance costs and inefficiencies.

[0003] To address this problem, the prior art discloses a photovoltaic system with an openable photovoltaic component, in which the openable photovoltaic component is provided at the corresponding operation and maintenance window position, wherein the openable photovoltaic component can be flipped open and closed, but in the closed state, in order to ensure reliable closure, a pressing block component is required to be fixed, and in the open state, a temporary support rod is required to support it, otherwise there is a risk of incorrect closure. This makes the operation of opening and closing the openable photovoltaic component cumbersome, consumes a long time of work, and increases the operational risk during high-altitude operations. [Utility Model Content]

[0004] In view of the deficiencies of the existing technology, the technical problem to be solved by the present invention is to provide a photovoltaic system with an operation and maintenance window having the function of maintaining a closed and open state, thereby solving the problem of the cumbersome opening and closing of openable photovoltaic components.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a photovoltaic system with an operation and maintenance window having the function of maintaining a closed and open state, comprising a photovoltaic array composed of a number of photovoltaic components, the photovoltaic array being provided with at least one operation and maintenance window of a rectangular structure, and an openable photovoltaic component being provided at the position corresponding to the operation and maintenance window, the openable photovoltaic component comprising a fixed frame of a rectangular structure and two split photovoltaic units arranged on the inner side of the fixed frame, the split photovoltaic unit being a rectangular structure and having an outer frame, the outer frame being hinged to the fixed frame, a closing and opening maintaining mechanism being connected between the split photovoltaic unit and the fixed frame, the closing and opening maintaining mechanism maintaining the two split photovoltaic units in a closed state when the photovoltaic system is operating normally, and maintaining the two split photovoltaic units in an open state when the photovoltaic system is operating and maintaining.

[0006] Preferably, the closing and opening retention mechanism comprises a pneumatic strut.

[0007] Preferably, each split photovoltaic unit is connected to two pneumatic struts, and the two pneumatic struts are correspondingly connected to two opposite sides of the outer frame of the photovoltaic unit.

[0008] Preferably, a hinge is fixed on the bottom surface of the outer frame of the split photovoltaic unit, and the pneumatic strut is hinged to the hinge.

[0009] Preferably, the hinge is an isosceles triangle structure, and the hinge has a hinge groove and is connected with a hinge bolt.

[0010] Preferably, the hinge is welded to the outer frame or connected with fixing bolts.

[0011] Preferably, the hinge is made of stainless steel or aluminum alloy profile.

[0012] Preferably, the outer frame of the split photovoltaic unit is hinged to the fixed frame via a hinge; and / or a handle is connected to the side of the outer frame of the split photovoltaic unit opposite to the hinge.

[0013] Preferably, the fixed frame has the same size as the frame of the photovoltaic module; and / or, a sealing strip is provided on the inner side of the fixed frame.

[0014] Preferably, the fixed frame is made of stainless steel or aluminum alloy profile.

[0015] The technical solution adopted by the utility model has the following beneficial effects:

[0016] 1. The openable photovoltaic components corresponding to the operation and maintenance window are equipped with two split photovoltaic units. The split door structure has the advantage of being easy to open and close. When maintenance, inspection or cleaning is required, the operation and maintenance personnel can directly push open the two split photovoltaic units when climbing, so that the operation and maintenance window has the ability to be fully opened during operation and maintenance, which is convenient for climbing out of the roof for operation and maintenance, and provides unobstructed maintenance and maintenance; when the inspection is completed, the operation and maintenance personnel can pull the two split photovoltaic units to close the two split photovoltaic units.

[0017] Since there is a closing and opening retention mechanism connected between the photovoltaic unit and the fixed frame, the two split photovoltaic units are kept in a closed state when the photovoltaic system is operating normally, and there is no need to set up additional structures such as pressure blocks. When the photovoltaic system is operated and maintained, the two split photovoltaic units are kept in an open state, and there is no need to use temporary support poles, which makes it convenient to climb out of the roof for operation and maintenance. Therefore, it is convenient for later operation and maintenance personnel to operate on site, reduce safety risks, and improve construction safety.

[0018] Since the openable photovoltaic module is provided with a fixed frame of a rectangular structure, and the two split photovoltaic units are arranged inside the fixed frame, the openable photovoltaic module can be installed normally like other photovoltaic modules to form an integral photovoltaic array without the need for setting up additional mounting structures.

[0019] Therefore, the above technical solution not only improves the work efficiency during operation and maintenance, but also reduces the potential risks during the maintenance process, providing a strong guarantee for the long-term stable operation of the photovoltaic system.

[0020] 2. Pneumatic struts, also known as gas springs, are powered by high-pressure inert gas. The supporting force is constant throughout the entire working stroke, the speed is relatively slow, the dynamic force does not change much, it is easy to control, and it has a buffer mechanism to avoid the impact of being in place. This is the biggest feature that is superior to ordinary springs. It also has the advantages of easy installation, safe use, and no maintenance. Therefore, it is used to achieve the opening and closing of split photovoltaic units. It is safe and reliable, and the opening and closing process is also easy to control.

[0021] 3. Since each split photovoltaic unit is connected to two pneumatic struts, and the two pneumatic struts are connected to the two opposite sides of the outer frame of the photovoltaic unit, the holding force on both sides of each split photovoltaic unit remains balanced, and sufficient holding force is provided when opening and closing.

[0022] 4. One end of the pneumatic strut is hinged to the bottom surface of the outer frame of the photovoltaic unit through a hinge, and the other end of the pneumatic strut is connected to the inner side of the fixed frame through its own mounting base. In this way, when closed, the pneumatic strut is located directly below the outer frame of the photovoltaic unit and inside the fixed frame. When opened, the photovoltaic unit can be perpendicular to the plane of the photovoltaic array. When opened or closed, it will not affect other structures in the photovoltaic system.

[0023] 5. The hinges are made of stainless steel or aluminum alloy profiles, which not only have low cost but also will not rust after long-term use.

[0024] 6. A handle is connected to the side of the outer frame of the photovoltaic unit relative to the hinge, which is convenient for applying force to the two split photovoltaic units when opening and closing.

[0025] 7. In the openable photovoltaic module, the fixed frame has the same size as the frame of the normal photovoltaic module, and the sum of the areas of the two split photovoltaic units is equivalent to the area of ​​a normal photovoltaic module, which does not affect the arrangement of the original photovoltaic array.

[0026] 8. A sealing strip can be provided on the inner side of the fixed frame, so that in the closed state, the outer frames of the two split photovoltaic units and the fixed frame remain sealed, which can ensure that the openable photovoltaic module does not leak in the closed state.

[0027] 9. The material of the fixed frame is the same as that of the frame of conventional photovoltaic modules, such as stainless steel or aluminum alloy profiles, which not only has a lower cost but also will not rust after long-term use.

[0028] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0029] The utility model is further described below with reference to the accompanying drawings:

[0030] Figure 1 This is a schematic diagram of the photovoltaic array layout under normal use;

[0031] Figure 2 It is a schematic diagram of the three-dimensional structure of the photovoltaic assembly that can be opened when two split photovoltaic units are opened;

[0032] Figure 3 A front view of the openable photovoltaic modules of two split photovoltaic units in the open state;

[0033] Figure 4 It is a structural diagram of a fixed frame;

[0034] Figure 5 Schematic diagram of the structure of the pneumatic strut;

[0035] Figure 6 Schematic diagram of the structure of the hinge;

[0036] Figure 7 is a structural diagram of a hinge;

[0037] Reference numerals: photovoltaic array 100 , openable photovoltaic assembly 1 , fixed frame 11 , photovoltaic unit 12 , hinge 13 , pneumatic strut 14 , mounting base 141 , hinge 15 , through hole 151 , photovoltaic bracket 200 . [Specific implementation method]

[0038] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0039] Those skilled in the art will appreciate that, unless there is any conflict, the features in the following embodiments and implementations may be combined with each other.

[0040] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the utility model. For example, the terms "upper," "lower," "inner," and "outer" used below to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are used only to facilitate the description of the utility model and simplify the description. They do not indicate or imply that the device or element referred to must have a specific orientation or be constructed or operated in a specific orientation. Therefore, they should not be understood as limiting the utility model.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0043] Reference Figures 1 to 7 As shown, this embodiment provides a photovoltaic system with an operation and maintenance window capable of maintaining a closed and open state, including a photovoltaic array 100 composed of a plurality of photovoltaic modules, typically a regular rectangular array, wherein the photovoltaic modules are rectangular and surrounded by a frame. The photovoltaic array 100 is provided with an operation and maintenance window of a rectangular structure corresponding to the size of a normal photovoltaic module, and an openable photovoltaic module 1 is provided at the position corresponding to the operation and maintenance window.

[0044] Here, the openable photovoltaic assembly 1 includes a fixed frame 11 of a rectangular structure and two split photovoltaic units 12 arranged on the inner side of the fixed frame 11. The split photovoltaic unit 12 may also be referred to as a photovoltaic unit below. The photovoltaic unit 12 is a rectangular structure and has an outer frame. The outer frame is hinged to the fixed frame 11. A closing and opening retention mechanism is connected between the photovoltaic unit 12 and the fixed frame 11. The closing and opening retention mechanism keeps the two split photovoltaic units in a closed state when the photovoltaic system is operating normally, and keeps the two split photovoltaic units in an open state when the photovoltaic system is operating and maintained.

[0045] The above technical solution is to provide two split photovoltaic units corresponding to the openable photovoltaic components set at the operation and maintenance window. The split-door structure has the advantage of being easy to open and close. When maintenance, inspection or cleaning is required, the operation and maintenance personnel can directly push open the two split photovoltaic units when climbing, so that the operation and maintenance window has the ability to be fully opened during operation and maintenance, which is convenient for climbing out of the roof for operation and maintenance, and provides unobstructed maintenance and maintenance; when the inspection is completed, the operation and maintenance personnel can pull the two split photovoltaic units to close the two split photovoltaic units.

[0046] Since there is a closing and opening retention mechanism connected between the photovoltaic unit and the fixed frame, the two split photovoltaic units are kept in a closed state when the photovoltaic system is operating normally, and there is no need to set up additional structures such as pressure blocks. When the photovoltaic system is operated and maintained, the two split photovoltaic units are kept in an open state, and there is no need to use temporary support poles, which makes it convenient to climb out of the roof for operation and maintenance. Therefore, it is convenient for later operation and maintenance personnel to operate on site, reduce safety risks, and improve construction safety.

[0047] Since the openable photovoltaic module is provided with a fixed frame of a rectangular structure, and the two split photovoltaic units are arranged inside the fixed frame, the openable photovoltaic module can be installed normally like other photovoltaic modules to form an integral photovoltaic array without the need for setting up additional mounting structures.

[0048] Therefore, the above technical solution not only improves the work efficiency during operation and maintenance, but also reduces the potential risks during the maintenance process, providing a strong guarantee for the long-term stable operation of the photovoltaic system.

[0049] It is understandable that the fixed frame 11 has the same size as the frame of the photovoltaic module, and the sum of the areas of the two split photovoltaic units is equivalent to the area of ​​a normal photovoltaic module, which does not affect the original arrangement of the photovoltaic array.

[0050] Specifically, the closing and opening retention mechanism includes a pneumatic strut 14. The pneumatic strut, or gas spring, is powered by high-pressure inert gas. Its support force is constant throughout the entire working stroke, its speed is relatively slow, its dynamic force does not change much, it is easy to control, and it has a buffer mechanism to avoid impact when in place. This is its greatest advantage over ordinary springs. It also has the advantages of being easy to install, safe to use, and maintenance-free. Therefore, it is used to maintain the opening and closing of split photovoltaic units. It is safe and reliable, and the opening and closing processes are easy to control. Of course, other damping structures can also be used, and a structure in which opposite magnets attract each other can also be used to achieve closed retention. Furthermore, each split photovoltaic unit is connected to two pneumatic struts, and the two pneumatic struts are correspondingly connected to the two opposite sides of the photovoltaic unit's outer frame. In this way, the retention force on both sides of each split photovoltaic unit remains balanced, ensuring that sufficient retention force is provided during opening and closing.

[0051] Furthermore, a hinge 15 is fixed on the bottom surface of the outer frame of the photovoltaic unit, the pneumatic strut 14 is hinged to the hinge, and the other end of the pneumatic strut is connected to the inner side of the fixed frame through its own mounting seat 141. In this way, when closed, the pneumatic strut is located directly below the outer frame of the photovoltaic unit and on the inner side of the fixed frame, and when opened, the photovoltaic unit can be perpendicular to the plane of the photovoltaic array. When opened and closed, it will not affect other structures in the photovoltaic system.

[0052] Specifically, the hinge 15 is an isosceles triangle structure with a hinge slot. Hinge bolts connect via through-holes 151 on opposite sides of the hinge slot. The hinge 15 is welded to the outer frame or connected with fixed bolts. The hinge 15 is made of stainless steel or aluminum alloy. This not only offers low cost but also resists rusting over long periods of use.

[0053] Furthermore, the outer frame of the photovoltaic unit is hinged to the fixed frame 11 via a hinge 13. A handle is connected to the side of the outer frame of the photovoltaic unit opposite to the hinge, so as to facilitate applying force to the two split photovoltaic units when opening and closing.

[0054] As an improvement, a sealing strip may be provided on the inner side of the fixed frame 11. In this way, in the closed state, the outer frames of the two split photovoltaic units and the fixed frame are sealed, which can ensure that the openable photovoltaic assembly does not leak in the closed state.

[0055] The material and structure of the fixed frame are the same as those of the frames of conventional photovoltaic modules, for example, the fixed frame is made of stainless steel or aluminum alloy profiles, which not only has a low cost but also will not rust after long-term use.

[0056] In addition, referring to the prior art, the photovoltaic array 100 is mounted on a photovoltaic support 200, which includes longitudinal beams, transverse beams, and columns. The photovoltaic components are fixed to the transverse beams using a pressure plate assembly. The pressure plate assembly includes an upper pressure plate pressed against the C edge of the frame, a lower pressure plate located on the underside of the transverse beam, and pressure plate bolts connecting the upper and lower pressure plates. The pressure plate bolts are U-shaped bolts with the mouth facing downward, and the nuts are tightened under the transverse beam.

[0057] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art will understand that the utility model includes, but is not limited to, the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the utility model are intended to be included within the scope of the claims.

Claims

1. A photovoltaic system with an operation and maintenance window capable of maintaining a closed and open state, comprising a photovoltaic array composed of a plurality of photovoltaic modules, wherein the photovoltaic array is provided with at least one operation and maintenance window of a rectangular structure, and an openable photovoltaic module is provided at the position corresponding to the operation and maintenance window, characterized in that: The openable photovoltaic assembly includes a fixed frame of a rectangular structure and two split photovoltaic units arranged on the inner side of the fixed frame. The split photovoltaic units are of a rectangular structure and have an outer frame. The outer frame is hinged to the fixed frame. A closing and opening retention mechanism is connected between the split photovoltaic units and the fixed frame. The closing and opening retention mechanism keeps the two split photovoltaic units in a closed state when the photovoltaic system is operating normally, and keeps the two split photovoltaic units in an open state when the photovoltaic system is being operated and maintained.

2. A photovoltaic system with an operation and maintenance window having a closed and open state maintaining function according to claim 1, characterized in that: The closing and opening retention mechanism includes a pneumatic strut.

3. A photovoltaic system with an operation and maintenance window having a closed and open state maintaining function according to claim 2, characterized in that: Each split photovoltaic unit is connected to two pneumatic struts, and the two pneumatic struts are correspondingly connected to two opposite sides of the outer frame of the split photovoltaic unit.

4. A photovoltaic system with an operation and maintenance window having a closed and open state maintaining function according to claim 3, characterized in that: A hinge is fixed on the bottom surface of the outer frame of the split photovoltaic unit, and the pneumatic strut is hinged to the hinge.

5. A photovoltaic system with an operation and maintenance window having a closed and open state maintaining function according to claim 4, characterized in that: The hinged part is an isosceles triangle structure, has a hinged groove and is connected with a hinged bolt.

6. A photovoltaic system with an operation and maintenance window having a closed and open state maintaining function according to claim 4, characterized in that: The hinged part is welded to the outer frame or connected with fixing bolts.

7. A photovoltaic system with an operation and maintenance window having a closed and open state maintaining function according to claim 4, characterized in that: The hinge is made of stainless steel or aluminum alloy profile.

8. The photovoltaic system having an operation and maintenance window with a closing and opening state maintaining function according to claim 1, characterized in that: The outer frame of the split photovoltaic unit is hinged to the fixed frame via a hinge; and / or a handle is connected to the side of the outer frame of the split photovoltaic unit opposite to the hinge.

9. The photovoltaic system having an operation and maintenance window with a closing and opening state maintaining function according to claim 1, characterized in that: The fixed frame has the same size as the frame of the photovoltaic module; and / or a sealing strip is provided on the inner side of the fixed frame.

10. A photovoltaic system with an operation and maintenance window having a closing and opening state maintaining function according to claim 1, characterized in that: The fixed frame is made of stainless steel or aluminum alloy profiles.

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