Roof distributed photovoltaic power station wind-resistant protection device

Abstract

The invention relates to the technical field of photovoltaic power stations, and particularly discloses a roof distributed photovoltaic power station wind-resistant protection device which is applied to a distributed photovoltaic power station, and the distributed photovoltaic power station comprises a photovoltaic frame and a photovoltaic panel; the wind-resistant protection device comprises a side plate; the annular guide groove is formed in one side of the side plate; a primary protection member; a secondary protection member; the conveying assembly is used for driving the first-stage protection part and the second-stage protection part to move along the annular guide groove; a wind power sensor and a controller. When the wind power level is between T1 and T2, primary protection is triggered, and a primary protection piece only shields and protects the photovoltaic panel, so that the photovoltaic panel is prevented from being damaged by blown sand, broken stones and the like, and meanwhile, normal lighting and power generation of the photovoltaic panel are ensured; when the wind power level exceeds T2, secondary protection is triggered, the secondary protection part wraps and protects the photovoltaic panel in all directions, and meanwhile, the anti-lifting part is driven to seal the bottom of the photovoltaic panel, so that the photovoltaic panel is prevented from being lifted or smashed by other objects.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic power stations, and more specifically, to a wind-resistant protection device for a rooftop distributed photovoltaic power station. Background Art

[0002] Photovoltaic power station is a power generation facility that uses photovoltaic modules to convert solar energy into electrical energy. Photovoltaic power stations convert the photon energy in sunlight into electric current through the photoelectric effect, thereby generating electricity. In distributed photovoltaic power stations installed on roofs, photovoltaic panels are an important component. Since they need to receive sunlight, they are generally directly exposed to the environment. Since the area around photovoltaic power stations is relatively open, when the wind is strong, it may cause certain damage to the photovoltaic panels, causing some gravel or falling objects to be blown onto the photovoltaic panels and damage the surface of the photovoltaic panels. Most of the existing wind protection devices for photovoltaic panels directly wrap the photovoltaic panels, which is not convenient for flexibly triggering wind protection measures according to the level of environmental wind force. It not only affects the normal lighting and power generation efficiency of photovoltaic panels, but also the protection effect needs to be improved. Summary of the invention

[0003] In order to overcome the above technical problems, the present invention proposes a wind-resistant protection device for a rooftop distributed photovoltaic power station.

[0004] The purpose of the present invention can be achieved through the following technical solutions:

[0005] A wind-resistant protection device for a rooftop distributed photovoltaic power station, applied to a distributed photovoltaic power station, wherein the distributed photovoltaic power station comprises a photovoltaic rack and a plurality of photovoltaic panels obliquely installed on the photovoltaic rack;

[0006] The wind protection device comprises:

[0007] Side panels, which are provided in two groups and are symmetrically distributed on both sides of the photovoltaic frame;

[0008] An annular guide groove is provided on a side of the side plate facing the photovoltaic frame;

[0009] A primary protection member is provided on the side plate and is located on a side of the photovoltaic panel that is tilted downward;

[0010] A secondary protection member is provided on the side plate and is located on the upwardly inclined side of the photovoltaic panel;

[0011] A conveying assembly, which is arranged on the side plate and is used to drive the primary guard and the secondary guard to move along the annular guide groove;

[0012] The wind protection device also includes:

[0013] A wind sensor is installed on the photovoltaic rack to detect the ambient wind speed;

[0014] A controller is arranged on the side panel, and is used to obtain the current wind speed V measured by the wind sensor, and query the current wind force level T corresponding to the current wind speed V according to a preset wind speed-wind force level comparison table; when 0≤T≤T1, no action is taken; when T1<T≤T2, the conveying component is controlled to drive the first-level protective component to unfold and cover the photovoltaic panel; when T>T2, the conveying component is controlled to drive the second-level protective component to unfold and cover the photovoltaic panel; wherein, T1 is the first-level wind force level threshold, T2 is the second-level wind force level threshold, and 0<T1<T2, and T1 and T2 are both positive integers.

[0015] As a further solution of the present invention: the annular guide groove includes a horizontal section, a first vertical section, an inclined section and a second vertical section which are spliced ​​end to end, the first-level protective member is arranged at the first vertical section, the second-level protective member is arranged at the second vertical section, and the inclined section is located above the photovoltaic panel and has the same inclination as the photovoltaic panel.

[0016] As a further solution of the present invention: the conveying assembly includes a conveying chain arranged in the annular guide groove and a sprocket rotatably mounted on the side plate, the sprocket meshing with the conveying chain for transmission; the path of the conveying chain is adapted to the contour of the annular guide groove, and a push block is fixed on the conveying chain; in an initial state, the push block is located in the horizontal section of the annular guide groove;

[0017] A transmission shaft is coaxially fixedly connected between the sprocket wheels on the two groups of side plates, and a conveying motor for driving the sprocket wheels is fixedly installed on one group of the side plates.

[0018] As a further solution of the present invention: the conveying assembly also includes a conveying chain guide rail fixed in the annular guide groove, the conveying chain guide rail is provided with a slot adapted to the conveying chain, a plurality of rollers are rotatably mounted on the conveying chain, and the rollers are rollingly embedded in the slot.

[0019] As a further solution of the present invention: the first-level protective member includes a winding drum arranged between two groups of side plates, and both ends of the winding drum are rotatably installed on the corresponding side plates through a rotating shaft, and a coil spring is provided at the connection between the rotating shaft and the side plate; a flexible transparent protective film is wound on the winding drum, one end of the flexible transparent protective film extends into an annular guide groove and is fixed with a first-level driving block, and a slot is opened on the side of the annular guide groove close to the winding drum for the flexible transparent protective film to pass through.

[0020] As a further solution of the present invention: a primary guide wheel is arranged at the junction of the first vertical section and the inclined section, the primary guide wheel is rotatably mounted on the side plate, a first avoidance groove is opened on the side of the annular guide groove close to the primary guide wheel, the primary guide wheel passes through the first avoidance groove and extends into the annular guide groove.

[0021] As a further solution of the present invention: the secondary protective member includes a storage bin arranged on the side panel, the storage bin is located on one side of the second vertical section of the annular guide groove, the storage bin and the second vertical section are interconnected, and a plurality of groups of foldable rigid magnetic protective plates are arranged in the storage bin, and adjacent rigid magnetic protective plates are rotatably connected by hinges;

[0022] The bottommost rigid magnetic protection plate is fixed to the bottom of the storage bin, and the topmost rigid magnetic protection plate is rotatably connected to a connecting rod, at the end of which a secondary driving block extending into the annular guide groove is fixed.

[0023] As a further solution of the present invention: a folding drive component is provided on the side of the second vertical section of the annular guide groove facing away from the storage bin, and the folding drive component includes a chamber connected to the annular guide groove, a lifting slide vertically slidably arranged in the chamber, and a cylinder fixedly installed on the lifting slide, a screw rod is rotatably installed in the chamber, the screw rod is threadedly connected to the lifting slide, a lifting motor for driving the screw rod is fixedly installed on the outer wall of the chamber, and a folding push block is connected to the protruding end of the cylinder.

[0024] As a further solution of the present invention: a secondary guide wheel is provided at the junction of the second vertical section and the inclined section, the secondary guide wheel is rotatably mounted on the side plate, a second avoidance groove is provided on one side of the annular guide groove close to the secondary guide wheel, the secondary guide wheel passes through the second avoidance groove and extends into the annular guide groove;

[0025] The secondary guide wheel comprises a wheel body, and a plurality of recessed parts are evenly arranged on the wheel body in a circumferential direction, and the recessed parts are adapted to the rigid magnetic protection plate.

[0026] As a further solution of the present invention: it also includes an anti-lifting component, which includes a sealing cover plate and a fixed pulley rotatably installed on the side plate, the sealing cover plate is adapted to the lower end surface of the photovoltaic panel, one end of the sealing cover plate is rotatably connected to the upward inclined side of the photovoltaic frame, the other end of the sealing cover plate is connected to an elastic cable, and the end of the elastic cable away from the sealing cover plate bypasses the fixed pulley and is fixedly connected to the secondary guide wheel.

[0027] Beneficial effects of the present invention:

[0028] The wind sensor detects the ambient wind speed in real time. The controller can judge the wind force level according to the size of the ambient wind speed, and trigger the corresponding wind-resistant action according to the threshold range of the wind force level. When the wind force level is between T1 and T2, the first-level protection is triggered, and the first-level protection parts only cover and protect the photovoltaic panels to avoid damage to the photovoltaic panels by blown sand and gravel, while ensuring the normal lighting and power generation of the photovoltaic panels. When the wind force level exceeds T2, the second-level protection is triggered, and the second-level protection parts wrap the photovoltaic panels in all directions for protection, and at the same time drive the anti-lifting parts to seal the bottom of the photovoltaic panels to prevent the photovoltaic panels from being lifted or damaged by other objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0031] Figure 2 A three-dimensional schematic diagram of another viewing angle of the present invention;

[0032] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0033] Figure 4 is a side view of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the conveyor chain guide rail in the present invention;

[0035] Figure 6 It is a structural schematic diagram of the side plate in the present invention;

[0036] Figure 7 for Figure 6 Enlarged view of point B in the middle;

[0037] Figure 8 It is a structural schematic diagram of the secondary protection element in the present invention;

[0038] Fig. 9 for Figure 6 Enlarged view of point C in the middle;

[0039] Fig.10 It is a structural schematic diagram of the side panel in the present invention from another perspective;

[0040] Fig.11 for Fig.10 Enlarged view of point D in the middle.

[0041] In the figure:

[0042] 100. Photovoltaic rack; 110. Photovoltaic panel;

[0043] 200, side plate; 210, annular guide groove; 221, horizontal section; 222, first vertical section; 223, inclined section; 224, second vertical section; 220, conveyor chain guide rail; 230, conveyor chain; 231, roller; 240, push block; 250, sprocket; 260, conveyor motor; 270, transmission shaft;

[0044] 300, primary protective member; 310, winding drum; 320, flexible transparent protective film; 330, primary driving block; 340, notch;

[0045] 400, secondary protective part; 410, storage compartment; 420, rigid magnetic protection plate; 430, hinge; 440, connecting rod; 450, secondary driving block;

[0046] 500, secondary guide wheel; 510, wheel body; 520, recessed portion;

[0047] 600, anti-lifting member; 610, sealing cover plate; 620, fixed pulley; 630, elastic cable;

[0048] 700, first-stage guide wheel;

[0049] 800, folding drive member; 810, chamber; 820, lifting slide plate; 830, screw rod; 840, lifting motor; 850, cylinder; 860, folding push block;

[0050] 900. Controller; 910. Wind sensor. DETAILED DESCRIPTION

[0051] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0052] See also Figure 1 and Figure 2 , the present invention discloses a wind-resistant protection device for a rooftop distributed photovoltaic power station, which is applied to a distributed photovoltaic power station, wherein the distributed photovoltaic power station comprises a photovoltaic rack 100 and a plurality of photovoltaic panels 110 obliquely installed on the photovoltaic rack 100;

[0053] The wind-resistant protection device comprises a side plate 200, an annular guide groove 210, a primary protective member 300, a secondary protective member 400 and a conveying assembly; the side plate 200 is provided with two groups and symmetrically distributed on both sides of the photovoltaic frame 100; the annular guide groove 210 is provided on the side of the side plate 200 facing the photovoltaic frame 100; the primary protective member 300 is provided on the side plate 200 and is located on the side of the photovoltaic panel 110 that is inclined downward; the secondary protective member 400 is provided on the side plate 200 and is located on the side of the photovoltaic panel 110 that is inclined upward; the conveying assembly is provided on the side plate 200, and is used to drive the primary protective member 300 and the secondary protective member 400 to move along the annular guide groove 210;

[0054] The anti-wind protection device further includes a controller 900 and a wind sensor 910 , wherein the wind sensor 910 is installed on the photovoltaic rack 100 and is used to detect the ambient wind speed;

[0055] The controller 900 is arranged on the side panel 200, and is used to obtain the current wind speed V measured by the wind sensor 910, and query the current wind force level T corresponding to the current wind speed V according to the preset wind speed-wind force level comparison table; when 0≤T≤T1, no action is taken; when T1<T≤T2, the conveying component is controlled to drive the first-level protective member 300 to unfold and cover above the photovoltaic panel 110; when T>T2, the conveying component is controlled to drive the second-level protective member 400 to unfold and cover above the photovoltaic panel 110; wherein, T1 is the first-level wind force level threshold, T2 is the second-level wind force level threshold, and 0<T1<T2, T1 and T2 are both positive integers.

[0056] Specifically, the wind sensor 910 detects the ambient wind speed in real time, and the controller 900 determines the wind force level according to the size of the ambient wind speed, and triggers the corresponding wind resistance action according to the threshold range of the wind force level; when the wind force level corresponding to the ambient wind speed is less than or equal to T1, it means that the wind speed is relatively small at this time and will not pose any threat to the photovoltaic panel 110, and the wind resistance device does not need to trigger the protection action; when the wind force level corresponding to the ambient wind speed is between T1 and T2, it means that the wind speed is relatively large at this time and can pose a certain threat to the photovoltaic panel 110, and the controller 900 controls the conveying component to move the first-level protective element 300 It is unfolded and covers above the photovoltaic panel 110 to prevent the blown sand and gravel from damaging the photovoltaic panel 110. At the same time, the first-level protective member 300 can allow sunlight to penetrate normally, thereby not affecting the normal lighting and power generation of the photovoltaic panel 110. When the wind force level corresponding to the ambient wind speed exceeds T2, it means that the wind speed is too high at this time, which may pose a great threat to the photovoltaic panel 110. The controller 900 controls the conveying component to unfold the second-level protective member 400 and cover it above the photovoltaic panel 110, thereby wrapping and protecting the photovoltaic panel 110 to prevent the photovoltaic panel 110 from being lifted up or damaged by objects dumped around it.

[0057] It should be noted that the controller 900 can judge the wind force level according to the size of the ambient wind speed, and trigger the corresponding wind-resistant action according to the threshold range of the wind force level; when the wind force level is between T1 and T2, the first-level protection is triggered, and the first-level protection component 300 only covers and protects the photovoltaic panel 110, while ensuring the normal lighting and power generation of the photovoltaic panel 110; when the wind force level exceeds T2, the second-level protection is triggered, and the second-level protection component 400 wraps the photovoltaic panel 110 in all directions to prevent the photovoltaic panel 110 from being lifted up or damaged by other objects.

[0058] The above wind force levels can be set according to actual protection requirements. Specifically, they can be defined as follows:

[0059] Level 0: no wind, wind speed 0.0-0.2 m / s;

[0060] Level 1: soft wind, wind speed 0.3-1.5 m / s;

[0061] Level 2: light wind, wind speed 1.6-3.3 m / s;

[0062] Level 3: light breeze, wind speed 3.4-5.4 m / s;

[0063] Level 4: Gentle wind, wind speed 5.5-7.9 m / s;

[0064] Level 5: strong wind, wind speed 8.0-10.7 m / s;

[0065] Level 6: strong wind, wind speed 10.8-13.8 m / s;

[0066] Level 7: strong wind, wind speed 13.9-17.1 m / s;

[0067] Level 8: strong wind, wind speed 17.2-20.7 m / s.

[0068] Among them, the wind speed detection accuracy is 0.1 m / s, T1 is level 5, and T2 is level 8.

[0069] In one embodiment, see Figure 4 The annular guide groove 210 includes a horizontal section 221, a first vertical section 222, an inclined section 223 and a second vertical section 224 which are connected end to end. The primary protection member 300 is arranged at the first vertical section 222, and the secondary protection member 400 is arranged at the second vertical section 224. The inclined section 223 is located above the photovoltaic panel 110 and has the same inclination as the photovoltaic panel 110.

[0070] Specifically, in the initial state, the first-level protective member 300 and the second-level protective member 400 will not affect the normal lighting of the photovoltaic panel 110; when the first-level protection is triggered, the first-level protective member 300 is unfolded along the first vertical section 222 to the inclined section 223, thereby covering the photovoltaic panel 110; when the second-level protection is triggered, the second-level protective member 400 is unfolded along the second vertical section 224 to the inclined section 223, thereby wrapping the photovoltaic panel 110.

[0071] See also Figure 2 and Figure 3 The conveying assembly includes a conveying chain 230 disposed in the annular guide groove 210 and a sprocket 250 rotatably mounted on the side plate 200, the sprocket 250 meshes with the conveying chain 230 for transmission; the path of the conveying chain 230 is adapted to the contour of the annular guide groove 210, and a push block 240 is fixed on the conveying chain 230;

[0072] In the initial state, the pushing block 240 is located in the horizontal section 221 of the annular guide groove 210;

[0073] A transmission shaft 270 is coaxially fixedly connected between the sprocket wheels 250 on the two sets of side plates 200, and a conveying motor 260 for driving the sprocket wheels 250 is fixedly installed on one set of the side plates 200;

[0074] The conveying motor 260 drives the sprockets 250 on both sides to rotate synchronously. Under the meshing transmission of the sprockets 250 and the conveying chain 230, the conveying chains 230 on both sides are driven to move synchronously along the annular guide groove 210, thereby driving the pushing block 240 to move, so as to drive the primary protective member 300 or the secondary protective member 400 to unfold.

[0075] For further information, see Figure 5 Considering the stability of the conveyor chain 230, the conveyor assembly further includes a conveyor chain guide rail 220 fixed in the annular guide groove 210, and a slot adapted to the conveyor chain 230 is provided in the conveyor chain guide rail 220. A plurality of rollers 231 are rotatably mounted on the conveyor chain 230, and the rollers 231 are rollingly embedded in the slots;

[0076] The card slot on the conveyor chain guide rail 220 is adapted and installed with the roller 231 on the conveyor chain 230, so that the conveyor chain guide rail 220 can be used to limit the moving trajectory of the conveyor chain 230, ensuring the smooth operation of the conveyor chain 230, while effectively preventing the conveyor chain 230 from being separated from the annular guide groove 210, ensuring the stability of the primary protection and secondary protection functions.

[0077] In yet another embodiment, see Figure 6 and Figure 7The primary protection member 300 includes a winding drum 310 disposed between two sets of side plates 200, and both ends of the winding drum 310 are rotatably mounted on the corresponding side plates 200 through a rotating shaft, and a coil spring (not shown in the figure) is disposed at the connection between the rotating shaft and the side plate 200; a flexible transparent protective film 320 is wound on the winding drum 310, and one end of the flexible transparent protective film 320 extends into the annular guide groove 210 and is fixed with a primary driving block 330, and a notch 340 for the flexible transparent protective film 320 to pass through is opened on one side of the annular guide groove 210 close to the winding drum 310;

[0078] In the initial state, due to the elastic force of the coil spring, the winding drum 310 always winds up the flexible transparent protective film 320, thereby pulling the primary driving block 330 against the notch 340. When the primary protection is triggered, the conveying motor 260 drives the conveying chain 230 to move through the sprocket 250, thereby driving the pushing block 240 to move along the horizontal section 221 to the first vertical section 222 until the pushing block 240 contacts the primary driving block 330, and then pushes the primary driving block 330 to move along the first vertical section 222 to the inclined section 223, thereby pulling the flexible transparent protective film 320 out of the winding drum 310 and gradually unfolding it along the trajectory of the annular guide groove 210 until the flexible transparent protective film 320 is fully unfolded into the inclined section 223, so as to cover the top of the photovoltaic panel 110, prevent gravel from falling and damaging the photovoltaic panel 110, and at the same time do not affect the normal lighting of the photovoltaic panel 110;

[0079] When the wind weakens and there is no need for primary protection, the conveying motor 260 drives the conveying chain 230 to move in the opposite direction, causing the pushing block 240 to return to the horizontal section 221. The flexible transparent protective film 320 can be rewound onto the winding drum 310 under the action of the winding spring, and at the same time drives the primary driving block 330 to reset to the first vertical section 222 to remove the covering effect of the flexible transparent protective film 320 on the photovoltaic panel 110.

[0080] It should be noted that there is no restriction on the material of the flexible transparent protective film 320, as long as it is a flexible light-transmitting material that can be rolled up and unfolded. Specifically, it can be made of polyvinyl chloride. In addition, although the flexible transparent protective film 320 can provide protection for the photovoltaic panel 110 without affecting the normal lighting of the photovoltaic panel 110, it will still affect the heat dissipation of the photovoltaic panel 110 to a certain extent. Therefore, when the wind level is lower than T1, the first-level protection is not activated.

[0081] For further information, see Figure 6In order to enable the flexible transparent protective film 320 to smoothly transition and unfold along the first vertical section 222 toward the inclined section 223, a primary guide wheel 700 is provided at the junction of the first vertical section 222 and the inclined section 223. The primary guide wheel 700 is rotatably mounted on the side plate 200. A first avoidance groove is provided on one side of the annular guide groove close to the primary guide wheel 700 210. The primary guide wheel 700 passes through the first avoidance groove and extends into the annular guide groove 210.

[0082] When the flexible transparent protective film 320 transitions from the first vertical section 222 to the inclined section 223, the flexible transparent protective film 320 rolls in contact with the primary guide wheel 700. The primary guide wheel 700 can reduce the resistance of the flexible transparent protective film 320 when it is unfolded, and can guide the flexible transparent protective film 320 on the other hand, so that the flexible transparent protective film 320 can complete a smooth transition at the junction of the first vertical section 222 and the inclined section 223.

[0083] See also Figure 8 The secondary protective member 400 includes a storage bin 410 disposed on the side plate 200, the storage bin 410 is located on one side of the second vertical section 224 of the annular guide groove 210, the storage bin 410 and the second vertical section 224 are interconnected, and a plurality of groups of foldable rigid magnetic protective plates 420 are disposed in the storage bin 410, and adjacent rigid magnetic protective plates 420 are rotatably connected by hinges 430;

[0084] The bottommost rigid magnetic protection plate 420 is fixed to the bottom of the storage bin 410, and the topmost rigid magnetic protection plate 420 is rotatably connected to a connecting rod 440, and a secondary driving block 450 extending into the annular guide groove 210 is fixed to the end of the connecting rod 440;

[0085] In the initial state, the rigid magnetic protection plates 420 are stacked in the storage bin 410 under the action of mutual magnetic attraction. When the secondary protection is triggered, the conveying motor 260 drives the conveying chain 230 to move through the sprocket 250, thereby driving the push block 240 to move along the horizontal section 221 to the second vertical section 224 until the push block 240 contacts the secondary driving block 450, and then pushes the secondary driving block 450 to move along the second vertical section 224 to the inclined section 223, thereby pulling up the rigid magnetic protection plates 420 in turn and gradually unfolding them along the trajectory of the annular guide groove 210, until the rigid magnetic protection plates 420 are fully unfolded into the inclined section 223, so as to wrap and protect the top of the photovoltaic panel 110;

[0086] When the wind weakens and no secondary protection is needed, the conveying motor 260 drives the conveying chain 230 to move in the opposite direction, so that the pushing block 240 returns to the horizontal section 221, and the pushing block 240 no longer applies thrust to the secondary driving block 450, and the second rigid magnetic protection plate 420 adjacent to the bottom rigid magnetic protection plate 420 in the storage bin 410 can be adsorbed and folded together by the bottom rigid magnetic protection plate 420 under the action of magnetic attraction, and then the third rigid magnetic protection plate 420 continues to be adsorbed and folded with the second rigid magnetic protection plate 420, and the cycle is repeated, so that each rigid magnetic protection plate 420 is folded into the storage bin 410 under the action of chain action;

[0087] It should be noted that when the push block 240 pushes the secondary driving block 450, the thrust generated by the push block 240 on the secondary driving block 450 is sufficient to overcome the magnetic attraction between the rigid magnetic attraction protection plates 420, so that the rigid magnetic attraction protection plates 420 can be smoothly unfolded in sequence; and after the push block 240 releases the thrust on the secondary driving block 450, the magnetic attraction between adjacent rigid magnetic attraction protection plates 420 is sufficient to drive each group of rigid magnetic attraction protection plates 420 to overcome their own gravity and the friction with the annular guide groove 210 to fold and reset;

[0088] The material of the rigid magnetic protection plate 420 is not limited. Specifically, the rigid magnetic protection plate 420 can be a plate made of stainless steel, and magnetic sheets that can attract each other are embedded on both end surfaces of the plate.

[0089] See also Fig.10 and Fig.11 Considering the stability of the folding and resetting of the rigid magnetic protection plate 420, a folding driving member 800 is provided on the side of the second vertical section 224 of the annular guide groove 210 away from the storage bin 410. The folding driving member 800 includes a chamber 810 connected to the annular guide groove 210, a lifting slide 820 vertically slidably arranged in the chamber 810, and a cylinder 850 fixedly installed on the lifting slide 820. A screw rod 830 is rotatably installed in the chamber 810, and the screw rod 830 is threadedly connected to the lifting slide 820. A lifting motor 840 for driving the screw rod 830 is fixedly installed on the outer wall of the chamber 810, and a folding push block 860 is connected to the protruding end of the cylinder 850.

[0090] Specifically, the lifting motor 840 drives the screw rod 830 to rotate, thereby driving the lifting slide plate 820 to move up and down to achieve the height adjustment of the folding push block 860; during the folding and resetting process of the rigid magnetic protection plate 420, the cylinder 850 drives the folding push block 860 to extend horizontally toward one side of the storage bin 410, and the extended folding push block 860 is used to horizontally push the rigid magnetic protection plate 420, and the folding push block 860 is inserted between adjacent rigid magnetic protection plates 420 in turn, so that the rigid magnetic protection plate 420 can be smoothly folded into the storage bin 410. When the rigid magnetic protection plate 420 below is successfully adsorbed and folded, the folding push block 860 moves upward for a distance and is inserted between the next group of adjacent rigid magnetic protection plates 420. Repeating this operation can achieve continuous storage and folding of the rigid magnetic protection plates 420.

[0091] It should be noted that the folding push block 860 can not only cause the rigid magnetic protective plate 420 to fold, but also, after the rigid magnetic protective plate 420 below is folded, it can adaptively pull the rigid magnetic protective plate 420 unfolded above into the storage bin 410 in sequence, thereby realizing the continuous folding and storage of the rigid magnetic protective plate 420; when the folding push block 860 is pushed and folded to a certain angle, the folding push block 860 can be pulled out horizontally, and the two rigid magnetic protective plates 420 can be automatically attracted under the action of magnetic force and gravity; when the cylinder 850 drives the folding push block 860 to completely retract into the chamber 810, the folding push block 860 will not interfere with the operation of the push block 240 and the rigid magnetic protective plate 420.

[0092] For further information, see Figure 6 and Fig. 9 In order to enable the rigid magnetic protection plate 420 to smoothly transition and unfold along the second vertical section 224 toward the inclined section 223, a secondary guide wheel 500 is provided at the junction of the second vertical section 224 and the inclined section 223, and the secondary guide wheel 500 is rotatably mounted on the side plate 200. A second avoidance groove is provided on one side of the annular guide groove 210 close to the secondary guide wheel 500, and the secondary guide wheel 500 passes through the second avoidance groove and extends into the annular guide groove 210;

[0093] The secondary guide wheel 500 includes a wheel body 510, and a plurality of recessed portions 520 are evenly formed on the circumference of the wheel body 510, and the recessed portions 520 are adapted to the rigid magnetic protection plate 420;

[0094] When the rigid magnetic protection plates 420 are unfolded one by one, each rigid magnetic protection plate 420 is inserted into the corresponding recessed portion 520 of the wheel body 510 one by one, thereby driving the secondary guide wheel 500 to rotate synchronously to achieve the guidance and transition of the rigid magnetic protection plate 420. Since the recessed portion 520 and the rigid magnetic protection plate 420 are mutually engaged and adapted, the rigid magnetic protection plate 420 is effectively prevented from being misaligned and offset, thereby ensuring that the rigid magnetic protection plate 420 is smoothly unfolded.

[0095] For further information, see Fig.10 , considering that when the wind force level is large, it is easy to generate a large blowing force on the bottom of the photovoltaic panel 110, causing the photovoltaic panel 110 to be lifted from the photovoltaic frame 100, for this purpose, it also includes an anti-lifting member 600, the anti-lifting member 600 includes a sealing cover plate 610 and a fixed pulley 620 rotatably mounted on the side plate 200, the sealing cover plate 610 is adapted to the lower end surface of the photovoltaic panel 110, one end of the sealing cover plate 610 is rotatably connected to the upwardly inclined side of the photovoltaic frame 100, and the other end of the sealing cover plate 610 is connected to an elastic cable 630, and the end of the elastic cable 630 away from the sealing cover plate 610 bypasses the fixed pulley 620 and is fixedly connected to the secondary guide wheel 500;

[0096] When the rigid magnetic protection plate 420 is unfolded, it drives the secondary guide wheel 500 to rotate synchronously, and the secondary guide wheel 500 pulls the elastic cable 630. As the elastic cable 630 is continuously tightened, it pulls the sealing cover plate 610 to rotate upward around its axis until the sealing cover plate 610 fits with the lower end surface of the photovoltaic panel 110, thereby sealing and covering the lower end surface of the photovoltaic panel 110 to prevent the photovoltaic panel 110 from being lifted up due to a strong blowing force on the lower end of the photovoltaic panel 110 when the wind is strong.

[0097] It should be noted that since the travel of the rigid magnetic protective plate 420 when unfolded is inconsistent with the rotation travel of the sealing cover plate 610, in order to avoid the situation where the rigid magnetic protective plate 420 has not been fully unfolded and the sealing cover plate 610 has been flipped upward into place, an elastic cable 630 is provided. The elastic cable 630 has a certain tensile property, so that it can be stretched and deformed according to actual conditions to compensate for the problem of inconsistent travels between the rigid magnetic protective plate 420 and the sealing cover plate 610. When the rigid magnetic protective plate 420 is fully unfolded, the elastic cable 630 can just pull the sealing cover plate 610 to fully fit the photovoltaic panel 110.

[0098] The specific implementation methods of this embodiment are described above, but this embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms inspired by this embodiment, all of which are within the protection of this embodiment.

Claims

1. A wind-resistant protection device for a rooftop distributed photovoltaic power station, applied to a distributed photovoltaic power station, the distributed photovoltaic power station comprising a photovoltaic rack (100) and a plurality of photovoltaic panels (110) obliquely mounted on the photovoltaic rack (100); It is characterized in that The wind protection device comprises: Side panels (200), which are provided in two groups and are symmetrically distributed on both sides of the photovoltaic frame (100); An annular guide groove (210) disposed on a side of the side plate (200) facing the photovoltaic frame (100); A primary protection member (300) is arranged on the side plate (200) and is located on a side of the photovoltaic panel (110) that is tilted downward; A secondary protection member (400) is arranged on the side plate (200) and is located on the upwardly inclined side of the photovoltaic panel (110); A conveying assembly, which is arranged on the side plate (200) and is used to drive the primary protection member (300) and the secondary protection member (400) to move along the annular guide groove (210); The wind protection device also includes: A wind sensor (910) is installed on the photovoltaic rack (100) and is used to detect the ambient wind speed; A controller (900) is arranged on the side plate (200) and is used to obtain a current wind speed V measured by a wind sensor (910), and to query a current wind speed level T corresponding to the current wind speed V according to a preset wind speed-wind force level comparison table; when 0≤T≤T1, no action is taken; when T1<T≤T2, the conveying component is controlled to drive the first-level protective member (300) to unfold and cover the photovoltaic panel (110); when T>T2, the conveying component is controlled to drive the second-level protective member (400) to unfold and cover the photovoltaic panel (110); wherein T1 is a first-level wind force level threshold, T2 is a second-level wind force level threshold, and 0<T1<T2, and T1 and T2 are both positive integers.

2. A wind protection device for a rooftop distributed photovoltaic power station according to claim 1, characterized in that: The annular guide groove (210) comprises a horizontal section (221), a first vertical section (222), an inclined section (223) and a second vertical section (224) which are connected end to end to each other; the first-level protection member (300) is arranged at the first vertical section (222); the second-level protection member (400) is arranged at the second vertical section (224); and the inclined section (223) is located above the photovoltaic panel (110) and has the same inclination as the photovoltaic panel (110).

3. A wind protection device for a rooftop distributed photovoltaic power station according to claim 2, characterized in that: The conveying assembly comprises a conveying chain (230) arranged in the annular guide groove (210) and a sprocket (250) rotatably mounted on the side plate (200), wherein the sprocket (250) meshes with the conveying chain (230) for transmission; the path of the conveying chain (230) is adapted to the profile of the annular guide groove (210), and a push block (240) is fixed on the conveying chain (230); in an initial state, the push block (240) is located in the horizontal section (221) of the annular guide groove (210); A transmission shaft (270) is coaxially fixedly connected between the sprocket wheels (250) on the two sets of side plates (200), and a conveying motor (260) for driving the sprocket wheels (250) is fixedly mounted on one set of the side plates (200).

4. A wind protection device for a rooftop distributed photovoltaic power station according to claim 3, characterized in that: The conveying assembly further comprises a conveying chain guide rail (220) fixed in the annular guide groove (210), a slot adapted to the conveying chain (230) being provided in the conveying chain guide rail (220), a plurality of rollers (231) being rotatably mounted on the conveying chain (230), and the rollers (231) being rollingly embedded in the slot.

5. The wind-resistant protection device for a rooftop distributed photovoltaic power station according to claim 3 is characterized in that: The primary protective member (300) comprises a winding drum (310) arranged between two groups of side plates (200), the two ends of the winding drum (310) being rotatably mounted on the corresponding side plates (200) via a rotating shaft, and a coil spring being arranged at the connection between the rotating shaft and the side plates (200); a flexible transparent protective film (320) is wound on the winding drum (310), one end of the flexible transparent protective film (320) extends into the annular guide groove (210) and is fixed with a primary driving block (330), and a notch (340) for the flexible transparent protective film (320) to pass through is provided on a side of the annular guide groove (210) close to the winding drum (310).

6. The wind-resistant protection device for a rooftop distributed photovoltaic power station according to claim 5, characterized in that: A primary guide wheel (700) is provided at the junction of the first vertical section (222) and the inclined section (223); the primary guide wheel (700) is rotatably mounted on the side plate (200); a first avoidance groove is provided on a side of the annular guide groove (210) close to the primary guide wheel (700); the primary guide wheel (700) passes through the first avoidance groove and extends into the annular guide groove (210).

7. The wind-resistant protection device for a rooftop distributed photovoltaic power station according to claim 3 is characterized in that: The secondary protection member (400) comprises a storage bin (410) arranged on the side plate (200), the storage bin (410) being located on one side of the second vertical section (224) of the annular guide groove (210), the storage bin (410) and the second vertical section (224) being communicated with each other, a plurality of groups of foldable rigid magnetic protection plates (420) being arranged in the storage bin (410), and adjacent rigid magnetic protection plates (420) being rotatably connected via hinges (430); The bottommost rigid magnetic protection plate (420) is fixed to the bottom of the storage bin (410), and the topmost rigid magnetic protection plate (420) is rotatably connected to a connecting rod (440), wherein a secondary driving block (450) extending into the annular guide groove (210) is fixed at the end of the connecting rod (440).

8. The wind-resistant protection device for a rooftop distributed photovoltaic power station according to claim 7, characterized in that: A folding drive member (800) is provided on the side of the second vertical section (224) of the annular guide groove (210) facing away from the storage bin (410). The folding drive member (800) comprises a chamber (810) connected to the annular guide groove (210), a lifting slide plate (820) vertically slidably arranged in the chamber (810), and a cylinder (850) fixedly mounted on the lifting slide plate (820). A screw rod (830) is rotatably mounted in the chamber (810), and the screw rod (830) is threadedly connected to the lifting slide plate (820). A lifting motor (840) for driving the screw rod (830) is fixedly mounted on the outer wall of the chamber (810), and a folding push block (860) is connected to the protruding end of the cylinder (850).

9. The wind-resistant protection device for a rooftop distributed photovoltaic power station according to claim 7, characterized in that: A secondary guide wheel (500) is provided at the junction of the second vertical section (224) and the inclined section (223); the secondary guide wheel (500) is rotatably mounted on the side plate (200); a second avoidance groove is provided on a side of the annular guide groove (210) close to the secondary guide wheel (500); the secondary guide wheel (500) passes through the second avoidance groove and extends into the annular guide groove (210); The secondary guide wheel (500) comprises a wheel body (510), a plurality of recessed portions (520) being evenly provided on the circumference of the wheel body (510), the recessed portions (520) being adapted to fit the rigid magnetic protection plate (420).

10. A wind protection device for a rooftop distributed photovoltaic power station according to claim 9, characterized in that: The anti-lifting member (600) is also included. The anti-lifting member (600) includes a sealing cover plate (610) and a fixed pulley (620) rotatably mounted on the side plate (200). The sealing cover plate (610) is adapted to the lower end surface of the photovoltaic panel (110). One end of the sealing cover plate (610) is rotatably connected to an upwardly inclined side of the photovoltaic frame (100). The other end of the sealing cover plate (610) is connected to an elastic cable (630). The end of the elastic cable (630) away from the sealing cover plate (610) bypasses the fixed pulley (620) and is fixedly connected to the secondary guide wheel (500).

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