Photovoltaic module flammability tester

Abstract

The invention relates to the technical field of reliability testing, and discloses a photovoltaic module flammability tester which comprises a box body, a transparent door plate is arranged at the front end of the box body, a combustor is arranged on one side of the box body, a fire extinguisher is arranged on the other side of the box body, a rotating assembly is arranged in the box body, and the rotating assembly comprises a top disc rotationally connected to the top of the box body. The inner wall of the bottom of the box is rotatably connected with a chassis, the upper portion of the outer surface of the top tray is fixedly sleeved with a ratchet wheel, the top of the box is slidably connected with a cross-shaped rod, and the end, close to the top tray, of the cross-shaped rod is provided with a pawl. When the photovoltaic module is fixed through the positioning assembly, the top disc and the bottom disc are synchronously connected, the rotating assembly can conveniently drive the whole device to rotate in the operation process, due to the design of a ratchet wheel and a pawl, the effect of indirectly pushing the top disc to rotate is achieved, therefore, indirect rotation of the photovoltaic module is achieved, the detection result is more universal, and the detection efficiency is improved. And the fire extinguishing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reliability testing, in particular to a photovoltaic module flammability tester. BACKGROUND

[0002] With the rapid development of global photovoltaic industry, photovoltaic modules are affected by high temperature, lightning, aging and other factors during long-term outdoor operation, and fire risk gradually highlights. If the flame retardance of high polymer materials such as encapsulation adhesive film and backboard in the module is insufficient, it is easy to become a fire hazard. In order to regulate product safety, it is required that photovoltaic modules pass the flammability test, and the photovoltaic module flammability tester is a special device for evaluating the flame retardance of photovoltaic modules and their components.

[0003] In the prior art, a photovoltaic module flammability tester is disclosed in Chinese patent document CN118566410A, which comprises a box body, a positioning mechanism and a fire extinguishing mechanism. The rear side of the box body is provided with a mounting cover, and a burner is arranged in the mounting cover. The inside bottom side of the box body is provided with a placing table. The positioning mechanism comprises a driving assembly, a sliding rod, a first clamping plate and a second clamping plate. The fire extinguishing mechanism comprises a fire extinguisher, a lifting assembly and a linkage assembly. The fire extinguisher is located on the first horizontal assembly plate. The present application can clamp the photovoltaic module automatically, and improve the flammability test efficiency and ensure personnel safety by using the automatic fire extinguishing mechanism.

[0004] In view of the above and existing related technologies, the inventors believe that the following defects often exist: the photovoltaic module is in a fixed state after being installed in the device. During the burning and subsequent fire extinguishing process, the photovoltaic module is relatively stationary. The burner and the fire extinguisher are limited by the installation position and can only burn and extinguish in one direction. First, this will result in a single position for flammability testing, and the test results lack universality. Second, the fixed position during fire extinguishing will reduce the efficiency of fire extinguishing. SUMMARY

[0005] The technical problem to be solved by the present application is that the photovoltaic module is fixed and stationary in the prior art, the burner and the fire extinguisher have a single direction, which results in a lack of universality of the test results and low efficiency of fire extinguishing. Therefore, the present application provides a photovoltaic module flammability tester.

[0006] In order to achieve the above purpose, the following technical scheme is adopted in the present application: a photovoltaic module flammability tester comprises a box body, a transparent door plate is arranged at the front end of the box body, a burner is arranged on one side of the box body, and a fire extinguisher is arranged on the other side of the box body. A rotating assembly is arranged in the box body. A smoke exhaust device is arranged at the rear side of the box body. An exhaust assembly is arranged at the upper part of the smoke exhaust device. The rotating assembly comprises a top disc rotationally connected to the top of the box body, the inner wall of the bottom of the box body is rotationally connected with a bottom disc, a positioning assembly is arranged between the top disc and the bottom disc, a ratchet is fixedly arranged on the upper portion of the outer surface of the top disc, a cross rod is slidingly connected to the top of the box body, a pawl is arranged on the end of the cross rod close to the top disc, and a sliding assembly is arranged in the bottom disc.

[0007] Preferably, a motor is arranged at the top end of the box body, a rotating disc is fixedly connected to the driving end of the motor, and a push block is fixedly connected to the outer surface of the rotating disc.

[0008] Preferably, a strip-shaped slot is formed in the middle portion of the cross rod, and the push block is slidingly connected in the strip-shaped slot.

[0009] Preferably, the positioning assembly comprises a clamping seat fixedly connected to the outer surfaces of the top disc and the bottom disc, a vertical rod is clamped in the clamping seat, an elastic telescopic rod is arranged on the outer surface of the vertical rod, and a positioning block is fixedly connected to the end of the elastic telescopic rod.

[0010] Preferably, a pin rod is movably inserted into the side edge of the clamping seat, and the pin rod penetrates the vertical rod.

[0011] Preferably, the discharging assembly comprises a central rod movably inserted into the upper surface of the flue gas discharger, a fan plate is fixedly connected to the outer surface of the central rod, and the fan plate is arranged in the flue gas discharger.

[0012] Preferably, a disc is fixedly connected to the top end of the central rod, an extension plate is fixedly connected to the outer surface of the disc, a sliding groove is formed in the outer surface of the extension plate, a sliding block is arranged on the end of the cross rod away from the pawl, and the sliding block is slidingly connected in the sliding groove.

[0013] Preferably, the sliding assembly comprises a track formed in the middle portion of the upper surface of the bottom disc, a roller is movably inserted into the track, and the two ends of the roller extend into the interior of the bottom disc.

[0014] Preferably, a gear is fixedly arranged on the outer surface of each end of the roller, a horizontal plate is slidingly arranged in the interior of the bottom disc, a rack is fixedly connected to the upper surface of the horizontal plate, and the rack is arranged directly below the gear.

[0015] Preferably, a threaded rod is threadedly connected to the side edge of the bottom disc, a conical cylinder is fixedly connected to the end of the threaded rod extending into the bottom disc, and the conical cylinder is arranged below the horizontal plate.

[0016] The technical effects and advantages of the present application are as follows: In the present application, when the positioning assembly is used to fix the photovoltaic assembly, the top disc and the bottom disc are connected synchronously, which facilitates the overall rotation of the device during the operation of the rotating assembly. Due to the design of the ratchet and pawl, the effect of indirectly driving the top disc to rotate is achieved, thus realizing the indirect rotation of the photovoltaic assembly. During the burning and extinguishing process, each part of the photovoltaic assembly can be burned and extinguished, making the detection result more universal and improving the efficiency of extinguishing; In the present application, the rotating assembly synchronously drives the disc to swing back and forth, and the fan plate is deflected under the action of the center rod, thus realizing the back and forth switching of the fan plate between opening and closing. During the burning process, the opening and closing switching of the fan plate will indirectly discharge hot air, improve the aggregation of hot air, and increase the detection speed of the flammability test. In the present application, the sliding assembly is arranged in the inside of the bottom disc, which facilitates the installation and disassembly of the photovoltaic assembly. The sliding friction of the photovoltaic assembly is converted into rolling friction, achieving the effect of saving labor. BRIEF DESCRIPTION OF DRAWINGS

[0017] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are only for illustrative purposes, and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the back structure of the present application; Figure 3 It is a schematic diagram of the top structure of the present application; Figure 4 It is a schematic diagram of the cross-sectional structure of the present application; Figure 5 It is a schematic diagram of the rotating assembly structure of the present application; Figure 6 It is a schematic diagram of the discharge assembly structure of the present application; Figure 7 It is a schematic diagram of the sliding assembly structure of the present application.

[0018] Legend: 1, box; 2, transparent door plate; 3, burner; 4, fire extinguisher; 5, rotating assembly; 51, top disc; 52, bottom disc; 53, ratchet; 54, motor; 55, rotating disc; 56, push block; 57, cross rod; 58, strip-shaped slot; 59, pawl; 6, positioning assembly; 61, clamping seat; 62, vertical rod; 63, elastic telescopic rod; 64, positioning block; 65, pin rod; 7, discharge assembly; 71, center rod; 72, fan plate; 73, disc; 74, extension plate; 75, sliding groove; 76, sliding block; 8, sliding assembly; 81, track; 82, roller; 83, gear; 84, cross plate; 85, rack; 86, threaded rod; 87, conical cylinder; 9, flue gas discharger. DETAILED DESCRIPTION

[0019] It is easy to understand that, according to the technical solution of the present application, those skilled in the art can propose various structures and implementation modes that can be replaced with each other without changing the essential spirit of the present application. Therefore, the following detailed description and the drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the whole or as a limitation or restriction on the technical solution of the present application.

[0020] Referring to Figures 1 to 7 As shown in the figure, the present application provides a technical solution: a photovoltaic module flammability tester, comprising a box body 1, the front end of the box body 1 is provided with a transparent door plate 2, one side of the box body 1 is provided with a burner 3, the other side is provided with a fire extinguisher 4, the inside of the box body 1 is provided with a rotating assembly 5, the rear side of the box body 1 is provided with a smoke exhaust 9, the upper part of the smoke exhaust 9 is provided with a discharge assembly 7, the rotating assembly 5 comprises a top disc 51 rotatably connected to the top of the box body 1, the bottom wall of the bottom of the box body 1 is rotatably connected with a bottom disc 52, the top disc 51 and the bottom disc 52 are provided with a positioning assembly 6, the inside of the bottom disc 52 is provided with a sliding assembly 8.

[0021] The photovoltaic module to be detected is carried to the bottom disc 52, and the sliding assembly 8 can realize labor-saving pushing. The positioning assembly 6 fixes the photovoltaic module, and at the same time, the positioning assembly 6 connects the top disc 51 and the bottom disc 52, which facilitates the operation of the rotating assembly 5 to drive the whole indirect rotation. Cooperating with the burner 3, the outer surface of the photovoltaic module can be uniformly burned, ensuring that each part of the photovoltaic module can be tested for flammability, making the detection result more universal. At the same time, it can realize the all-round fire extinguishing treatment of the outer surface of the photovoltaic module, improve the efficiency of fire extinguishing, and the smoke exhaust 9 cooperates with the discharge assembly 7 to realize the indirect discharge of hot air, improve the aggregation of hot air, and increase the detection speed of flammability test.

[0022] Referring to Figures 2 to 5 As shown in the figure, the outer surface of the top disc 51 is fixedly sleeved with a ratchet wheel 53, the top of the box body 1 is slidably connected with a cross rod 57, one end of the cross rod 57 close to the top disc 51 is provided with a pawl 59, the top end of the box body 1 is provided with a motor 54, the driving end of the motor 54 is fixedly connected with a turntable 55, the outer surface of the turntable 55 is fixedly connected with a push block 56, the edge of the push block 56 close to the turntable 55, the middle part of the cross rod 57 is provided with a strip-shaped slot 58, and the push block 56 is slidably connected in the strip-shaped slot 58.

[0023] The motor 54 drives the rotating disc 55 to rotate, and the push block 56 moves around the center of the rotating disc 55, and the push block 56 drives the cross rod 57 to move linearly, and the cross rod 57 drives the pawl 59 to move towards the outer surface of the ratchet wheel 53, and the pawl 59 drives the ratchet wheel 53 to rotate when the cross rod 57 moves towards the ratchet wheel 53, and the top disc 51 rotates and drives the bottom disc 52 to rotate synchronously under the connection of the vertical rod 62. Since the cross rod 57 moves linearly, the pawl 59 moves back under the pulling of the cross rod 57 after driving the ratchet wheel 53 to rotate by a corresponding angle, and the pawl 59 and the ratchet wheel 53 slide relative to each other, and the top disc 51 and the bottom disc 52 remain stationary, thereby realizing the effect of indirect rotation of the photovoltaic module. In combination with the burner 3, the outer surface of the photovoltaic module can be uniformly burned, the combustibility of each part of the photovoltaic module can be tested, the detection result is more universal, and in addition, the outer surface of the photovoltaic module can be treated for all-around fire extinguishing during the candidate fire extinguishing process, and the fire extinguishing efficiency is improved.

[0024] Referring to Figures 1 to 4 As shown in the figure, the positioning assembly 6 includes a clamping seat 61 fixedly connected to the outer surfaces of the top disc 51 and the bottom disc 52, the clamping seat 61 is internally clamped with a vertical rod 62, the outer surface of the vertical rod 62 is provided with an elastic telescopic rod 63, the end of the elastic telescopic rod 63 is fixedly connected with a positioning block 64, the side of the clamping seat 61 is movably inserted with a pin rod 65, and the pin rod 65 penetrates through the vertical rod 62.

[0025] The two ends of the vertical rod 62 are clamped in the clamping seat 61, the vertical rod 62 is locked by the pin rod 65 after the position is adjusted, the photovoltaic module is clamped and fixed by the elastic telescopic rod 63 and the positioning block 64 on the outer surface of the vertical rod 62, and the vertical rod 62 also has the effect of connecting the top disc 51 and the bottom disc 52.

[0026] Referring to Figures 2 to 6 As shown in the figure, the discharge assembly 7 includes a center rod 71 movably inserted into the upper surface of the flue gas discharger 9, the outer surface of the center rod 71 is fixedly connected with a fan plate 72, the fan plate 72 is located in the flue gas discharger 9, the top end of the center rod 71 is fixedly connected with a disc 73, the outer surface of the disc 73 is fixedly connected with an extension plate 74, the outer surface of the extension plate 74 is provided with a sliding groove 75, the end of the cross rod 57 away from the pawl 59 is provided with a sliding block 76, and the sliding block 76 is slidingly clamped in the sliding groove 75.

[0027] The reciprocating movement of the cross rod 57 driven by the rotating disc 55 also acts on the discharging assembly 7. The slider 76 at the end of the cross rod 57 is slidingly connected in the sliding groove 75. When the cross rod 57 moves towards the top disc 51, the slider 76 slides in the sliding groove 75, thereby pulling the extension plate 74 to rotate the disc 73, which drives the fan plate 72 to deflect under the action of the central rod 71. When the cross rod 57 moves towards the disc 73, it pushes the disc 73 to rotate in the opposite direction. In this way, the fan plate 72 is switched back and forth between opening and closing. During the combustion process, the opening and closing of the fan plate 72 will cause the indirect discharge of hot air, improve the accumulation of hot air, and increase the detection speed of the flammability test.

[0028] Referring to Figure 4 and Figure 7 As shown, the sliding assembly 8 comprises a track 81 opened in the middle of the upper surface of the bottom disc 52. The inside of the track 81 movably penetrates a roller shaft 82. The both ends of the roller shaft 82 extend into the inside of the bottom disc 52. The outer surfaces of the both ends of the roller shaft 82 are fixedly sleeved with a gear 83. The inside of the bottom disc 52 slidingly sets a horizontal plate 84. The upper surface of the horizontal plate 84 is fixedly connected with a rack 85. The rack 85 is correspondingly arranged directly below the gear 83. The side edge of the bottom disc 52 is screw-connected with a threaded rod 86. One end of the threaded rod 86 extending into the bottom disc 52 is fixedly connected with a conical barrel 87. The conical barrel 87 is arranged below the horizontal plate 84.

[0029] The photovoltaic assembly to be detected is carried to the bottom disc 52 and pushed into the track 81. Pushing on the roller shaft 82 of the track 81 can reduce the pushing resistance. The sliding friction of the movement of the photovoltaic assembly is converted into rolling friction, which facilitates the installation of the photovoltaic assembly and achieves the effect of saving labor. After the photovoltaic assembly is pushed to the middle of the bottom disc 52, the threaded rod 86 is rotated. The conical barrel 87 at the end of the threaded rod 86 is pushed to slide the horizontal plate 84 upwards, thereby driving the rack 85 to move upwards until the rack 85 is connected with the gear 83, thereby achieving the locking of the roller shaft 82.

[0030] Working principle: When conducting a flammability test on a photovoltaic module, the photovoltaic module to be tested is transported to the chassis 52 and pushed into the track 81. Pushing on the roller 82 of the track 81 reduces the pushing resistance and converts the sliding friction of the photovoltaic module movement into rolling friction, which facilitates the installation of the photovoltaic module and achieves the effect of saving effort. After the photovoltaic module is pushed to the middle of the chassis 52, the threaded rod 86 is rotated. The threaded rod 86 moves into the chassis 52. The tapered cylinder 87 at its end pushes the horizontal plate 84 to slide upward with the movement of the threaded rod 86, which in turn drives the rack 85 to move upward until the rack 85 engages with the gear 83, thereby locking the roller 82. Then, the two ends of the vertical rod 62 are correspondingly engaged in the bracket 61. After adjusting the position, the pin 65 is used to lock the vertical rod 62. The elastic telescopic rod 63 and the positioning block 64 on the outer surface of the vertical rod 62 are used to clamp and fix the photovoltaic module. At the same time, the vertical rod 62 also serves to connect the top chassis 51 and the chassis 52. After the photovoltaic modules are fixed, the motor 54 is started. As the motor 54 drives the turntable 55 to rotate, it causes the push block 56 to move in a circular motion around the center of the turntable 55. Simultaneously, because the push block 56 is slidably engaged in the slot 58 of the cross rod 57, the push block 56 causes the cross rod 57 to reciprocate linearly during its movement. One end of the cross rod 57 is equipped with a pawl 59, so during its reciprocating motion, the cross rod 57 pushes the pawl 59 towards the outer surface of the ratchet 53. When the cross rod 57 moves towards the ratchet 53, the pawl 59 pushes the ratchet 53 to rotate, which in turn causes the top plate 51 to rotate, and under the connection of the vertical rod 62, it drives the bottom plate. 52 rotates synchronously. Since the cross bar 57 reciprocates, the pawl 59 will move back under the pull of the cross bar 57 after pushing the ratchet 53 to rotate at the corresponding angle. At this time, the pawl 59 and the ratchet 53 will slide relative to each other, and the top plate 51 and the bottom plate 52 will remain stationary. This achieves the effect of indirect rotation of the photovoltaic module. In conjunction with the burner 3, the outer surface of the photovoltaic module can be burned evenly, ensuring that all parts of the photovoltaic module can be tested for flammability, making the test results more universal. In addition, during the fire extinguishing process, the outer surface of the photovoltaic module can be extinguished in all directions, improving the efficiency of fire extinguishing. During the combustion test, the smoke discharging device 9 is synchronously operated, the cross rod 57 reciprocated by the rotating of the rotating disc 55 also acts on the discharging assembly 7, the slider 76 at the end of the cross rod 57 is slidingly connected in the sliding groove 75, when the cross rod 57 moves towards the top disc 51, the slider 76 is slidingly moved in the sliding groove 75, further pulling the extension plate 74 to rotate the disc 73, under the action of the central rod 71, the fan plate 72 is deflected, when the cross rod 57 moves towards the disc 73, the disc 73 is pushed to rotate reversely, thus the fan plate 72 is switched back and forth between opening and closing, during the combustion process, the opening and closing of the fan plate 72 can indirectly discharge the hot air, improve the gathering of the hot air, and increase the detection speed of the combustibility test.

[0031] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical idea of the present application, and these modifications and changes shall be within the protection scope of the present application.

Claims

1. A photovoltaic module flammability tester characterized by, Include: The box (1), the front end of the box (1) is provided with a transparent door plate (2), one side of the box (1) is provided with a burner (3), the other side is provided with a fire extinguisher (4), the inside of the box (1) is provided with a rotating assembly (5), the rear side of the box (1) is provided with a flue gas discharger (9), the upper part of the flue gas discharger (9) is provided with a discharge assembly (7); Wherein, the rotating assembly (5) includes a top disc (51) rotatably connected to the top of the box (1), the inner wall of the bottom of the box (1) is rotatably connected with a bottom disc (52), the top disc (51) and the bottom disc (52) are provided with a positioning assembly (6), the outer surface of the top disc (51) is fixedly provided with a ratchet (53), the top of the box (1) is slidably connected with a cross rod (57), one end of the cross rod (57) close to the top disc (51) is provided with a pawl (59), the inside of the bottom disc (52) is provided with a sliding assembly (8).

2. The photovoltaic module flammability tester of claim 1, wherein: The top end of the box (1) is provided with a motor (54), the driving end of the motor (54) is fixedly connected with a turntable (55), the outer surface of the turntable (55) is fixedly connected with a push block (56), the edge of the push block (56) close to the turntable (55).

3. The photovoltaic module flammability tester of claim 2, wherein: The middle part of the cross rod (57) is provided with a strip-shaped slot (58), and the push block (56) is slidably connected in the strip-shaped slot (58).

4. The photovoltaic module flammability tester of claim 1, wherein: The positioning assembly (6) includes a clamping seat (61) fixedly connected to the outer surfaces of the top disc (51) and the bottom disc (52), the inside of the clamping seat (61) is connected with a vertical rod (62), the outer surface of the vertical rod (62) is provided with an elastic telescopic rod (63), the end of the elastic telescopic rod (63) is fixedly connected with a positioning block (64).

5. The photovoltaic module flammability tester of claim 4, wherein: The side edge of the clamping seat (61) is movably inserted with a pin rod (65), and the pin rod (65) penetrates the vertical rod (62).

6. The photovoltaic module flammability tester of claim 1, wherein: The discharge assembly (7) includes a center rod (71) movably inserted into the upper surface of the flue gas discharger (9), the outer surface of the center rod (71) is fixedly connected with a fan plate (72), and the fan plate (72) is located in the inside of the flue gas discharger (9).

7. The photovoltaic module flammability tester of claim 6, wherein: The top end of the center rod (71) is fixedly connected with a disc (73), the outer surface of the disc (73) is fixedly connected with an extension plate (74), the outer surface of the extension plate (74) is provided with a sliding groove (75), one end of the cross rod (57) away from the pawl (59) is provided with a sliding block (76), and the sliding block (76) is slidably connected in the sliding groove (75).

8. The photovoltaic module flammability tester of claim 1, wherein: The sliding assembly (8) includes a track (81) formed in the middle of the upper surface of the bottom disc (52), the inside of the track (81) is movably inserted with a roller shaft (82), and the both ends of the roller shaft (82) extend into the inside of the bottom disc (52).

9. The photovoltaic module flammability tester of claim 8, wherein: The both ends of the roller shaft (82) are fixedly provided with a gear (83), the inside of the bottom disc (52) is slidably provided with a horizontal plate (84), the upper surface of the horizontal plate (84) is fixedly connected with a rack (85), and the rack (85) is correspondingly arranged below the gear (83).

10. The photovoltaic module flammability tester of claim 9, wherein: The side of the bottom disc (52) is threadedly connected with a threaded rod (86), one end of the threaded rod (86) is fixedly connected with a conical cylinder (87), and the conical cylinder (87) is arranged below the horizontal plate (84).

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