Roof photovoltaic fire-fighting device and using method thereof

Abstract

The invention provides a roof photovoltaic fire fighting device and a using method thereof, and belongs to the technical field of photovoltaic fire fighting. Comprising a photovoltaic panel assembly, a sensor is arranged on the photovoltaic panel assembly, a top fire extinguishing assembly is installed at the top of the photovoltaic panel assembly and comprises second protective cloth, a bottom plate fire extinguishing assembly is installed at the bottom of the photovoltaic panel assembly and comprises first protective cloth, and a driving assembly drives the bottom plate fire extinguishing assembly and the top fire extinguishing assembly. The driving assembly is connected with the fire extinguisher assembly, and when the sensor monitors that the photovoltaic panel assembly is on fire, the driving assembly drives the first protection cloth and the second protection cloth to cover the bottom and the top of the photovoltaic panel assembly, so that a closed space is formed, and the fire behavior is prevented from further spreading and affecting other photovoltaic panels; and meanwhile, the driving assembly drives the fire extinguisher assembly to work, dry powder is sprayed to the top and the bottom of the photovoltaic panel assembly at the same time for fire extinguishing, dry powder fire extinguishing is matched with protection cloth to reduce air entering, the fire extinguishing efficiency is improved, and meanwhile powder splashing is prevented from polluting the environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic fire fighting, and in particular relates to a rooftop photovoltaic fire fighting device and a use method thereof. Background Art

[0002] With the advancement of technology and the improvement of environmental awareness, photovoltaic systems have been increasingly widely used around the world. As a device that efficiently utilizes solar energy, photovoltaic panels are installed on the roofs of various buildings in large quantities due to their clean and renewable characteristics, becoming a beautiful landscape in cities and rural areas. However, with the surge in the number of photovoltaic panel installations, the potential fire risk has gradually emerged and has become a safety issue that cannot be ignored.

[0003] When facing the threat of fire, photovoltaic panel components may quickly become a medium for the spread of fire due to their material characteristics and installation methods, which not only threatens the structural safety of the building itself, but also poses a serious threat to the surrounding environment and personnel. Especially when the fire occurs at night or on cloudy days, photovoltaic panels lacking natural light may not work properly, and thus the fire cannot be quickly contained by power outages as usual, which further increases the complexity and danger of the fire. Therefore, ensuring the fire safety of photovoltaic panel components is not only responsible for the safety of people's lives, but also an important measure to maintain social stability and reduce economic losses. In order to effectively respond to this challenge, it is particularly critical to arrange photovoltaic fire-fighting equipment.

[0004] Publication number CN116421913A discloses a rooftop photovoltaic intelligent fire-fighting device, comprising a bracket installed on the roof, a support frame being provided on the bracket, a placement cavity being provided in the support frame, a mounting frame being slidably connected to the support frame, a photovoltaic panel being installed in the mounting frame, a driving mechanism being provided between the mounting block and the support block, a delivery pipe being provided on the inner walls around the support frame, a plurality of injection ports facing the photovoltaic panel being provided on the delivery pipe, and a covering mechanism being provided on the top of the support frame.

[0005] The above device delivers dry powder to the delivery pipe through the storage mechanism, and directly sprays the dry powder to the photovoltaic panel in the support frame through the injection port on the delivery pipe. The direct spraying of dry powder is easy to cause splashing, polluting the site, and affecting the work of other photovoltaic panels. The covering mechanism is only set on the top of the support frame. The main purpose is to prevent the spread of fire, and it cannot form a closed space to isolate the fire in the first time. Therefore, the present invention proposes a photovoltaic fire fighting device that can isolate the fire in the first time without affecting the work of other photovoltaic panels. Summary of the invention

[0006] The purpose of the present invention is to overcome the problem that the existing photovoltaic panel fire fighting device cannot isolate the fire immediately when a fire occurs, and the dry powder is easy to splash when extinguishing the fire, affecting the work of other photovoltaic panels, and provide a roof photovoltaic fire fighting device and its use method. By using the device, the dry powder is sprayed on the top and bottom of the photovoltaic panel assembly at the same time, and the dry powder fire extinguishing is combined with the protective cover to reduce the air ingress, thereby improving the fire fighting efficiency and preventing the powder from splashing and polluting the environment.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: A rooftop photovoltaic fire-fighting device comprises a photovoltaic panel assembly, a sensor is arranged on the photovoltaic panel assembly, a top fire-extinguishing assembly is installed on the top of the photovoltaic panel assembly, the top fire-extinguishing assembly comprises a second protective cloth, a bottom plate fire-extinguishing assembly is installed on the bottom of the photovoltaic panel assembly, the bottom plate fire-extinguishing assembly comprises a first protective cloth, a driving assembly drives the bottom plate fire-extinguishing assembly and the top fire-extinguishing assembly, and the driving assembly is connected to a fire extinguisher assembly.

[0008] An electric roller is arranged at the end of the surface of the top fire extinguishing assembly, and a second protective cloth is arranged around and covers the electric roller. One end of the second protective cloth is fixed to the outer surface of the electric roller, and the other end is fixedly connected to the movable rod.

[0009] Movable grooves are correspondingly arranged on the inner sides of the two side walls of the top fire extinguishing assembly, the movable block is installed in the movable groove, a limiting groove is arranged inside the movable groove, the second protective cloth card is arranged in the limiting groove, and the movable rod is fixedly connected to the movable block.

[0010] It includes a supporting foot, and the base plate fire extinguishing assembly is fixed on the top of the supporting foot; the end of the first protective cloth is connected to the rectangular frame tube; a limiting assembly is arranged at the bottom of the base plate fire extinguishing assembly, and the limiting assembly includes a limiting plate and a connecting rod, the limiting plate is installed around the inner side of the rectangular frame tube for limiting, and the connecting rod is fixedly connected to the limiting plate.

[0011] The driving assembly includes a telescopic cylinder, the bottom end of which is fixedly connected to a connecting plate, a connecting groove corresponding to a connecting rod is provided on the connecting plate, the connecting rod slides in the connecting groove, a sliding groove is provided on the inner side wall of the connecting groove, a sliding block is connected to the sliding groove, and the connecting rod is connected to the sliding block through a rotating shaft.

[0012] The fire extinguisher assembly includes a fire extinguisher body, the top of which is connected to a control valve, which is connected to a telescopic cylinder, a bottom nozzle and a top nozzle; the bottom nozzle is arranged below the bottom plate fire extinguishing assembly, and the top nozzle passes through a connecting plate and is arranged on both sides of the interior of the top fire extinguishing assembly.

[0013] A plurality of bottom nozzles are distributed in a circular array, and top nozzles are symmetrically and equidistantly arranged on both sides of the top fire extinguishing component. The height of the top fire extinguishing component is lower than the limiting groove.

[0014] The first protective cloth and the second protective cloth are both glass fiber fireproof cloth.

[0015] When the sensor detects that the photovoltaic panel assembly is on fire, the driving assembly drives the bottom plate fire extinguishing assembly and the top fire extinguishing assembly to work, and the first protective cloth and the second protective cloth cover the bottom and the top of the photovoltaic panel assembly. At the same time, the driving assembly drives the fire extinguisher assembly to work, so that dry powder is sprinkled on the top and the bottom of the photovoltaic panel assembly at the same time to extinguish the fire.

[0016] The fire extinguishing process of the fire extinguisher component controlled by the drive component is: The telescopic cylinder drives the connecting plate to move so that the first protective cloth and the second protective cloth wrap the photovoltaic panel assembly, and at the same time drives the control valve on the top of the fire extinguisher body to open. The control valve controls the bottom nozzle and the top nozzle to spray dry powder to extinguish the photovoltaic panel assembly.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a rooftop photovoltaic fire fighting device and a method for using the same, comprising a photovoltaic panel assembly, a sensor being arranged on the photovoltaic panel assembly, a top fire extinguishing assembly being installed on the top of the photovoltaic panel assembly, the top fire extinguishing assembly comprising a second protective cloth, a bottom plate fire extinguishing assembly being installed on the bottom of the photovoltaic panel assembly, the bottom plate fire extinguishing assembly comprising a first protective cloth, a driving assembly driving the bottom plate fire extinguishing assembly and the top fire extinguishing assembly, the driving assembly being connected to a fire extinguisher assembly, when the sensor detects that the photovoltaic panel assembly is on fire, the driving assembly drives the bottom plate fire extinguishing assembly and the top fire extinguishing assembly to work, the first protective cloth and the second protective cloth cover the bottom and the top of the photovoltaic panel assembly to form a closed space to prevent the fire from spreading further and affecting other photovoltaic panels; at the same time, the driving assembly drives the fire extinguisher assembly to work, so that dry powder is sprinkled on the top and the bottom of the photovoltaic panel assembly at the same time to extinguish the fire, the dry powder fire extinguishing cooperates with the protective cloth to reduce air entry, improves the fire extinguishing efficiency and prevents powder splashing and polluting the environment.

[0018] Furthermore, the rectangular frame tube drives the first protective cloth to fall and unfold, covering the bottom of the photovoltaic panel assembly, ensuring that the bottom space of the photovoltaic panel assembly is closed to prevent the fire from spreading.

[0019] Furthermore, when the movable rod slides in the movable groove through the movable block, the protective cloth can be driven to move in the limiting groove, and the limiting groove ensures that the position of the second protective cloth will not be offset.

[0020] Furthermore, the first protective cloth and the second protective cloth are made of glass fiber fireproof cloth, which has excellent high temperature resistance and corrosion resistance, a long service life, and can prevent the spread of fire while reducing air fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention; Figure 2 A schematic diagram of a photovoltaic panel assembly of the device of the present invention; Figure 3 This is a schematic diagram of the overall structure of the protective cloth of the device of the present invention; Figure 4 This is a schematic diagram of the internal structure of the top fire extinguishing assembly of the device of the present invention; Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle; Figure 6 This is a schematic diagram of the expanded structure of the bottom plate fire extinguishing assembly of the device of the present invention; Figure 7 It is a schematic diagram of the structure of the driving component and the limiting component of the device of the present invention; Figure 8 It is a schematic diagram of the structure of the connection groove of the device of the present invention.

[0023] Explanation of the reference numerals in the figure: 1. Support foot; 2. Bottom plate fire extinguishing assembly; 201. First protective cloth; 202. Rectangular frame tube; 3. Photovoltaic panel assembly; 4. Top fire extinguishing assembly; 401. Electric roller; 402. Second protective cloth; 403. Movable rod; 404. Movable groove; 405. Movable block; 406. Limit groove; 5. Limit assembly; 501. Limit plate; 502. Connecting rod; 6. Driving assembly; 601. Telescopic cylinder; 602. Connecting plate; 603. Connecting groove; 6031. Sliding groove; 6032. Sliding block; 7. Fire extinguisher assembly; 701. Fire extinguisher body; 702. Control valve; 703. Bottom nozzle; 704. Top nozzle. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0025] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0029] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Embodiment 1: like Figures 1 to 3As shown, the present invention provides a rooftop photovoltaic fire-fighting device and a method of using the same, including a photovoltaic panel assembly 3, a sensor is arranged on the photovoltaic panel assembly 3, a top fire-extinguishing assembly 4 is installed on the top of the photovoltaic panel assembly 3, the top fire-extinguishing assembly 4 includes a second protective cloth 402, a bottom plate fire-extinguishing assembly 2 is installed on the bottom of the photovoltaic panel assembly 3, the bottom plate fire-extinguishing assembly 2 includes a first protective cloth 201, a driving assembly 6 drives the bottom plate fire-extinguishing assembly 2 and the top fire-extinguishing assembly 4, and the driving assembly 6 is connected to the fire extinguisher assembly 7.

[0031] Furthermore, the bottom plate fire extinguishing assembly 2 and the top fire extinguishing assembly are both installed parallel to the photovoltaic panel assembly 3 .

[0032] In this embodiment, when the sensor detects that the photovoltaic panel assembly 3 is on fire, the driving assembly 6 drives the bottom plate fire extinguishing assembly 2 and the top fire extinguishing assembly 4 to work, and the first protective cloth 201 and the second protective cloth 402 cover the bottom and top of the photovoltaic panel assembly 3. At the same time, the driving assembly 6 drives the fire extinguisher assembly 7 to work, so that the dry powder is sprinkled on the top and bottom of the photovoltaic panel assembly 3 at the same time to extinguish the fire. The dry powder fire extinguishing cooperates with the protective cloth to reduce the air ingress, improve the fire extinguishing efficiency, and prevent the powder from splashing and polluting the environment.

[0033] Preferably, a plurality of temperature sensors and smoke sensors are provided on the surface of the photovoltaic panel assembly 3, and the temperature sensors and smoke sensors are electrically connected to the telescopic cylinder 601 to sense the state of the photovoltaic panel assembly 3, and convey the information to the driving assembly 6 when a fire occurs; Preferably, the first protective cloth 201 and the second protective cloth 402 are both glass fiber fireproof cloths, which have excellent high temperature resistance and corrosion resistance, long service life, and can prevent the spread of fire while reducing air fire extinguishing.

[0034] Embodiment 2: like Figures 4 and 5 As shown, as a further improvement of the present invention, an electric roller 401 is provided on one side of the surface end of the top fire extinguishing assembly 4, and a second protective cloth 402 is wound around the surface of the electric roller 401. One end of the second protective cloth 402 is fixedly connected to the outer surface of the electric roller 401, and the other end is fixedly connected to a movable rod 403; Furthermore, movable grooves 404 are correspondingly provided on both sides of the inner wall of the top fire extinguishing assembly 4, and a movable block 405 is movably connected in the movable groove 404. A limiting groove 406 is provided inside the movable groove 404, and both ends of the second protective cloth 402 are clamped in the limiting groove 406, and the movable rod 403 is fixedly connected to the movable block 405.

[0035] In this embodiment, the movable rod 403 can drive the second protective cloth 402 to move in the limiting groove 406 while sliding in the movable groove 404 through the movable block 405. The limiting groove 406 ensures that the position of the second protective cloth 402 will not shift. The second protective cloth 402 can be extended by the movable rod 403 and the electric roller 401 to cover the surface of the photovoltaic panel assembly 3.

[0036] Embodiment 3: like Figures 6 to 8 As shown, as a further improvement of the present invention, it includes a supporting foot 1, a bottom plate fire extinguishing assembly 2 is installed on the top of the supporting foot 1, the bottom plate fire extinguishing assembly 2 includes a first protective cloth 201 arranged inside, the end of the first protective cloth 201 is movably connected to the rectangular frame tube 202, and a limiting assembly 5 is provided to limit the position of the rectangular frame tube 202. The limiting assembly 5 includes four limiting plates 501 movably connected to the bottom of the bottom plate fire extinguishing assembly 2 through a rotating shaft, and the limiting plates 501 are fixedly connected to the connecting rod 502, and the rectangular frame tube 202 is limited by the bottom of the limiting plates 501; Furthermore, the driving assembly 6 includes a telescopic cylinder 601 fixedly connected to the inner side of the supporting foot 1, a connecting plate 602 is fixedly connected to the bottom end of the telescopic cylinder 601, a connecting groove 603 corresponding to the connecting rod 502 is provided on the surface of the connecting plate 602, sliding grooves 6031 are provided on both sides of the inner wall of the connecting groove 603, a sliding block 6032 is slidably connected inside the sliding groove 6031, and one end of the connecting rod 502 is movably connected to the sliding block 6032 through a rotating shaft.

[0037] In this embodiment, when the telescopic cylinder 601 is extended or retracted, it drives the connecting plate 602 to rise, thereby driving the sliding block 6032 in the sliding groove 6031 inside the connecting groove 603 to move, and the movement of the sliding block 6032 drives the connecting rod 502 to rotate, thereby changing the angle of the connecting rod 502, and realizing the automatic opening of the limit plate 501; when the connecting rod 502 drives the limit plate 501 to contract, the rectangular frame tube 202 falls from the inside of the bottom plate fire extinguishing assembly 2, and the limit plate 501 guides the rectangular frame tube 202 to fall, driving the first protective cloth 201 to cover the bottom of the photovoltaic panel assembly 3, reducing air entry, and at the same time isolating the spread of fire.

[0038] Embodiment 4: As a further improvement of the present invention, the fire extinguisher assembly 7 includes a fire extinguisher body 701, a control valve 702 is arranged on the top of the fire extinguisher body 701, the control valve 702 is fixedly connected to the telescopic cylinder 601, the control valve 702 is connected to the bottom nozzle 703 and the top nozzle 704 through a pipeline, an empty groove is opened on the surface of the connecting plate 602, the top nozzle 704 passes through the empty groove and is arranged on both sides of the inside of the top fire extinguishing assembly 4, and the bottom nozzle 703 is arranged below the bottom plate fire extinguishing assembly 2.

[0039] Furthermore, a plurality of bottom nozzles 703 are distributed in a circular array, and top nozzles 704 are symmetrically and equidistantly arranged on both sides of the top fire extinguishing assembly 4. The height of the top fire extinguishing assembly 4 is lower than the limiting groove 406, so that the sprayed dry powder can be kept in the closed second protective cloth 402.

[0040] In this embodiment, the telescopic cylinder 601 drives the connecting plate 602 to move while driving the control valve 702 at the top of the fire extinguisher body 701 to open, and the bottom nozzle 703 and the top nozzle 704 spray dry powder to extinguish the photovoltaic panel assembly 3 through the top and bottom nozzles. At the same time, the first protective cloth 201 and the second protective cloth 402 wrap the photovoltaic panel assembly 3 to reduce air contact while ensuring that the dry powder does not splash, thereby effectively improving the fire extinguishing efficiency of the device.

[0041] The working principle of the present invention is as follows: when in use, a plurality of temperature sensors and smoke sensors are arranged on the surface of the photovoltaic panel assembly 3, and the temperature sensors and smoke sensors are electrically connected to the telescopic cylinder 601 to sense the state of the photovoltaic panel assembly 3. When a fire occurs, the information is transmitted to the telescopic cylinder 601. When the telescopic cylinder 601 is extended and retracted, the connecting plate 602 is driven to rise, thereby driving the sliding block 6032 in the sliding groove 6031 inside the connecting groove 603 to move. When the sliding block 6032 moves, the connecting rod 502 is driven to rotate, thereby changing the angle of the connecting rod 502, and automatically opening the limit plate 501, and the rectangular frame tube 202 falls from the inside of the bottom plate fire extinguishing assembly 2, and passes through the limit plate 5 01 is guided to fall, driving the first protective cloth 201 to cover the bottom of the photovoltaic panel assembly 3, and the second protective cloth 402 is extended through the movable rod 403 and the electric roller 401 to cover the surface of the photovoltaic panel assembly 3. While the first protective cloth 201 and the second protective cloth 402 are covered, the telescopic cylinder 601 drives the control valve 702 on the top of the fire extinguisher body 701 to open, and the control valve 702 is connected to the bottom nozzle 703 and the top nozzle 704 through a pipeline, so that the dry powder is sprayed on the top and bottom of the photovoltaic panel assembly 3 at the same time. The protective cover keeps the dry powder cover inside, and cooperates with each other to improve the fire extinguishing efficiency while preventing powder from splashing and polluting the environment.

[0042] Finally, it should be noted that the above embodiments only describe the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0043] In addition, it should be understood that although this specification is described in accordance with the implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A rooftop photovoltaic fire-fighting device, characterized in that: The invention comprises a photovoltaic panel assembly (3), a sensor is arranged on the photovoltaic panel assembly (3), a top fire extinguishing assembly (4) is installed on the top of the photovoltaic panel assembly (3), the top fire extinguishing assembly (4) comprises a second protective cloth (402), a bottom plate fire extinguishing assembly (2) is installed on the bottom of the photovoltaic panel assembly (3), the bottom plate fire extinguishing assembly (2) comprises a first protective cloth (201), a driving assembly (6) drives the bottom plate fire extinguishing assembly (2) and the top fire extinguishing assembly (4), and the driving assembly (6) is connected to a fire extinguisher assembly (7).

2. A rooftop photovoltaic fire fighting device according to claim 1, characterized in that: An electric roller (401) is arranged at the end of the surface of the top fire extinguishing assembly (4), and a second protective cloth (402) is arranged around and covers the electric roller (401); one end of the second protective cloth (402) is fixed to the outer surface of the electric roller (401), and the other end is fixedly connected to the movable rod (403).

3. A rooftop photovoltaic fire fighting device according to claim 2, characterized in that: Movable grooves (404) are correspondingly arranged on the inner sides of the two side walls of the top fire extinguishing assembly (4), the movable block (405) is installed in the movable groove (404), a limiting groove (406) is arranged inside the movable groove (404), the second protective cloth (402) is clamped in the limiting groove (406), and the movable rod (403) is fixedly connected to the movable block (405).

4. A rooftop photovoltaic fire fighting device according to claim 1, characterized in that: The invention comprises a supporting foot (1), wherein the base plate fire extinguishing assembly (2) is fixed to the top of the supporting foot (1); the end of the first protective cloth (201) is connected to a rectangular frame tube (202); a limiting assembly (5) is arranged at the bottom of the base plate fire extinguishing assembly (2), wherein the limiting assembly (5) comprises a limiting plate (501) and a connecting rod (502); the limiting plate (501) is installed around the inner side of the rectangular frame tube (202) for limiting, and the connecting rod (502) is fixedly connected to the limiting plate (501).

5. A rooftop photovoltaic fire fighting device according to claim 4, characterized in that: The driving assembly (6) comprises a telescopic cylinder (601), the bottom end of the telescopic cylinder (601) is fixedly connected to a connecting plate (602), a connecting groove (603) corresponding to the connecting rod (502) is provided on the connecting plate (602), the connecting rod (502) slides in the connecting groove (603), a sliding groove (6031) is provided on the inner side wall of the connecting groove (603), a sliding block (6032) is connected to the sliding groove (6031), and the connecting rod (502) is connected to the sliding block (6032) via a rotating shaft.

6. A rooftop photovoltaic fire fighting device according to claim 5, characterized in that: The fire extinguisher assembly (7) comprises a fire extinguisher body (701), the top end of the fire extinguisher body (701) is connected to a control valve (702), the control valve (702) is connected to a telescopic cylinder (601), a bottom nozzle (703) and a top nozzle (704); the bottom nozzle (703) is arranged below the bottom plate fire extinguishing assembly (2), and the top nozzle (704) passes through the connecting plate (602) and is arranged on both sides inside the top fire extinguishing assembly (4).

7. A rooftop photovoltaic fire fighting device according to claim 3 or 6, characterized in that: A plurality of bottom nozzles (703) are distributed in a circular array, and top nozzles (704) are symmetrically and equidistantly arranged on both sides of the top fire extinguishing assembly (4). The height of the top fire extinguishing assembly (4) is lower than the limiting groove (406).

8. A rooftop photovoltaic fire fighting device according to claim 1, characterized in that: The first protective cloth (201) and the second protective cloth (402) are both glass fiber fireproof cloth.

9. A method for using a rooftop photovoltaic fire fighting device as claimed in claims 1 to 8, characterized in that: When the sensor detects that the photovoltaic panel assembly (3) is on fire, the driving assembly (6) drives the bottom plate fire extinguishing assembly (2) and the top plate fire extinguishing assembly (4) to operate, and the first protective cloth (201) and the second protective cloth (402) cover the bottom and the top of the photovoltaic panel assembly (3). At the same time, the driving assembly (6) drives the fire extinguisher assembly (7) to operate, so that dry powder is sprinkled on the top and the bottom of the photovoltaic panel assembly (3) at the same time to extinguish the fire.

10. A method for using a rooftop photovoltaic fire fighting device according to claim 9, characterized in that: The fire extinguishing process of the fire extinguisher assembly (7) controlled by the driving assembly (6) is as follows: The telescopic cylinder (601) drives the connecting plate (602) to move so that the first protective cloth (201) and the second protective cloth (402) wrap around the photovoltaic panel assembly (3), and at the same time drives the control valve (702) at the top of the fire extinguisher body (701) to open, and the control valve (702) controls the bottom nozzle (703) and the top nozzle (704) to spray dry powder to extinguish the photovoltaic panel assembly (3).

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