Photovoltaic box-type arc light protection system

Abstract

The invention discloses a photovoltaic box-type arc light protection system, and relates to the related field of arc light protection, the photovoltaic box-type arc light protection system comprises a monitoring box body, a door plate and heat dissipation ports, the door plate is hinged to the surface position of the monitoring box body, and the heat dissipation ports are formed in the surface of the door plate and the back position of the monitoring box body; the power-off protection mechanism comprises a power-off connecting plate arranged in the right side of the monitoring box body, the right end of a cross rod is fixed to the corner position of the periphery of the left side of the power-off connecting plate, and the left end of a containing rod is fixed to the interior of the monitoring box body. The photovoltaic box-type arc light protection system is provided with the driving mechanism, a conductive connecting block and a power-off connecting plate can be disconnected through the arrangement of a silicon rubber air bag, in addition, when the power-off connecting plate moves, driving of a heat dissipation accelerating mechanism can be achieved, gas is sprayed in a monitoring box body, and the arc light protection effect is improved. Therefore, heat in the monitoring box body can be dissipated.

Description

Technical Field

[0001] The present invention relates to the technical field related to arc protection, and in particular to a box-type arc protection system for photovoltaics. Background Art

[0002] In order to improve the safety of photovoltaic system operation, traditionally, only the photovoltaic busbar is protected from arc light, while the protection of photovoltaic box-type transformers is ignored. This protection defect is becoming increasingly obvious. Due to the lack of effective protection of photovoltaic box-type transformers, the insulation of photovoltaic box-type transformers decreases after long-term operation, which is prone to single-phase grounding short circuit and phase-to-phase short circuit. The box-type transformer cannot quickly remove the fault, resulting in internal arc light phenomenon, which seriously affects the safe operation of the photovoltaic system.

[0003] The existing photovoltaic box-type arc protection system cannot quickly remove the fault when facing arc phenomenon, and the long-term arc phenomenon will cause damage to electrical components; In order to overcome the above defects, a photovoltaic box-type transformer arc protection device disclosed in the prior art (application number CN202210212933.1, published on March 4, 2022) can be referred to. The arc protection device uses an arc unit communication abnormality detection module to obtain an arc protection module signal to determine whether the arc sensor associated with the current setting is correct, and sends an arc unit communication abnormality report when detecting an abnormality in the arc channel data transmission or a channel interruption for use; At the same time, reference can be made to an arc protection device disclosed in the prior art (application number CN202111567900.0, Chinese patent publication date 2022-03-04), which can provide arc protection and current monitoring protection for the working line by setting an information transmission module, an arc sensor, an arc signal conversion module, a detection control module, a current sensor, a circuit breaker and a circuit switch to cooperate with each other, which not only has high measurement accuracy and stable operation, but also has a large protection range; In addition, reference may be made to a rectifier cabinet arc protection device disclosed in the prior art (Chinese patent application number CN202310788560.7, published on October 27, 2023), in which an arc light probe provided with an electric control unit detects arc light, and a main control module disconnects the circuit according to a signal fed back by the arc light probe, thereby shortening the time for arc light to be generated; Although the above device shortens the time when the arc light is generated by setting, a large amount of heat will be generated when the arc light occurs. At this time, the heat is stored inside the box. It takes a long time to dissipate the heat only through the heat dissipation window. When facing the next arc phenomenon, the temperature inside the box will continue to rise, and even cause a fire in the box.

[0004] Therefore, we propose a box-type arc protection system for photovoltaics to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a box-type arc protection system for photovoltaics, so as to solve the problem raised by the above background technology that the box-type arc protection system for photovoltaics currently on the market will generate a large amount of heat when an arc phenomenon occurs. At this time, the heat is stored inside the box, and the heat is only dissipated through the heat dissipation window, which takes a relatively long time. When facing the next arc phenomenon, it will cause the inside of the box to continue to increase in temperature, and even cause a fire in the box.

[0006] To achieve the above object, the present invention provides the following technical solution: a photovoltaic box-type arc protection system, comprising a monitoring box, a door panel and a heat dissipation port, wherein the door panel is hingedly connected to the surface of the monitoring box, and the surface of the door panel and the back of the monitoring box are both provided with heat dissipation ports; It also includes: a fixed block is fixed at the lower right side of the monitoring box, a silicone rubber airbag is fixed at the lower position of the fixed block, the bottom position of the silicone rubber airbag acts on the driving mechanism, and the top position of the driving mechanism is connected to the power-off protection mechanism to realize power-off protection processing of the electrical components inside the monitoring box; The power-off protection mechanism includes a power-off connection plate arranged inside the right side of the monitoring box, the right end of the cross bar is fixed at the corners around the left side of the power-off connection plate, the left end of the cross bar is slidably arranged inside the accommodating rod, and a return spring is arranged at one end of the cross bar extending into the accommodating rod, the left end of the return spring is fixed inside the accommodating rod, the right end of the return spring is fixed at the left end of the cross bar, one end of the cross bar is tightly fitted inside the accommodating rod, and the left end of the accommodating rod is fixed inside the monitoring box; A group of gas hoses are connected to the outer side of the bottom of the accommodating rod, the bottom position of the gas hoses is connected to the top of the gas pipe, the bottom end of the gas pipe is connected to air jets at equal intervals, and an accelerated heat dissipation mechanism is arranged on the outer side of the gas pipe, one side of the accelerated heat dissipation mechanism is connected to the driving mechanism, so that the accelerated heat dissipation mechanism can be moved to the internal position of the right end of the monitoring box to achieve multi-range heat dissipation processing.

[0007] Preferably, the driving mechanism includes a rotating block connected to the bottom position of the silicone rubber airbag, the rotating block is arranged at an angle, the lower end position of the rotating block is fixed at the center position of the cam, the rear end position of the cam is rotatably arranged inside the monitoring box, the rear axis position of the cam is connected to the head end position of the torsion spring, and the tail end of the torsion spring is fixed inside the monitoring box. Through the setting of the driving mechanism, it is convenient to drive the circuit breaker protection mechanism to perform circuit breaker protection processing.

[0008] Preferably, the bottom end of the resistance block is spherical, and the outer middle part of the resistance block is fixed to the top of the connecting spring, the bottom position of the connecting spring is fixed to the top position of the fixed block, and the resistance block forms an elastic sliding structure with the inside of the fixed block through the connecting spring, and the interior of the silicone rubber airbag is filled with an expansion material, so that the resistance block can adjust its position through the fixed block through the groove setting of the cam.

[0009] Preferably, the power-off protection mechanism includes a contact block that fits in the groove position on the inner side of the cam, the middle part of the contact block passes through the left end of the fixed block, a slide groove is provided on the top of the contact block, a movable shaft is slidably arranged inside the slide groove, the top position of the movable shaft is rotatably arranged at the bottom end of the rotating rod, and the oblique upper end position of the rotating rod fits in the inner side position of the power-off connecting plate, so that the oblique upper end position of the rotating rod squeezes one side of the power-off connecting plate, thereby realizing the disconnection processing between the power-off connecting plate and the conductive connecting block.

[0010] Preferably, the outer side of the right end of the power-off connecting plate is attached to the side of the conductive connecting block, the connection end position of the conductive connecting block corresponds to the electrical components inside the monitoring box, and the middle lower position of the rotating rod is rotatably set on the inner wall of the monitoring box, so that the rotating rod can rotate with the middle lower end position as the center.

[0011] Preferably, the rear side of the power-off connecting plate is fixed to the right side of the fitting frame, the inner side of the left end of the fitting frame fits into the left wall of the elastic air bag, a one-way air inlet valve is provided on the outer side of the elastic air bag, a one-way air outlet valve is provided on the end of the elastic air bag connected to the hose, the bottom position of the elastic air bag is connected to the middle position of the air pipe through the hose, the air pipe includes an outer hose arranged on the outer side, an inner hard tube is fixed inside the outer hose, the inner hard tube and the outer hose are connected to the air port position at the bottom of the air hose, the outer sides of the inner hard tube and the outer hose are connected to the air port of the air jet, so that the distance between the outer hose and the inner hard tube can be changed conveniently, thereby accelerating the speed of the airflow.

[0012] Preferably, the convex end of the cam is rotatably connected to a rotating rod, the outer middle part of the rotating rod is rotatably connected to the right end of the inclined rod, the left end of the inclined rod is rotatably connected to the right end of the cross plate, and a fitting is fixed to the top left end of the cross plate, the bottom inner side of the fitting is slidably arranged inside the guide rail, and the bottom of the guide rail is welded to the internal position of the monitoring box, so that the convex position of the cam can drive the rotating rod and the inclined rod to move.

[0013] Preferably, one side of the upper end of the fitting is fitted on the outside of the gas pipe, a one-way air outlet valve is provided at the end of the gas pipe connected to the gas hose, and a one-way air inlet valve is provided on the outside of the accommodating rod, so that the gas can be stably transported.

[0014] Preferably, the side of the air pipe away from the fitting is fixed to the inner side of the fixed block, the protruding rod position of the fixed block is slidably set inside the guide rod, the rear end of the guide rod is fixed to the inner wall of the monitoring box, and the fixed block can slide stably through the guide rod position.

[0015] Preferably, the fixed patch forms a sliding structure between the fitting and the inside of the guide rod, and the end of the protruding rod of the fixed patch that contacts the guide rod is connected by a spring. The setting of the spring can realize the later resetting of the fixed patch.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the photovoltaic box-type arc protection system is provided with a driving mechanism, and the driving mechanism provided at the bottom of the silicone rubber airbag can be operated by the setting of the silicone rubber airbag. Since the top of the driving mechanism is provided at the circuit-breaking protection mechanism, the conductive connection block and the power-off connection plate can be disconnected. In addition, when the power-off connection plate moves, the driving of the heat dissipation mechanism can be accelerated, so that the gas is ejected inside the monitoring box, thereby heat dissipating the heat inside the monitoring box. The specific contents are shown as follows: A driving mechanism is provided, and the setting of the silicone rubber airbag can drive the operation of the driving mechanism, so that the driving mechanism can drive the resistance block to slide inside the fixed block, and the rotating rod provided drives the disconnection processing between the power-off connection plate and the conductive connection block through the setting of the movable shaft, so that the circuit-breaking protection processing can be performed; A power-off connection plate is provided, and a cross bar provided on the rear side of the power-off connection plate slides inside the accommodation rod, so that gas is transported through a gas hose, so that gas can be jetted through the jet port and the rotating rod, and the heat inside the monitoring box can be jetted through the heat dissipation port; Furthermore, a power-off connection plate is provided, and a fitting frame provided at the left side of the power-off connection plate contacts with the elastic air delivery bag and squeezes one side of the elastic air delivery bag, so that the gas inside the elastic air delivery bag can be transported through the hose, and the gas will be jetted through the jet port and the rotating rod to increase the gas jet amount; 3. An inclined rod is provided, and the inclined rod provided at the end of the cam drives the horizontal plate to move, so that the horizontal plate drives the fitting to move through the guide rail. In addition, the fitting will squeeze one side of the gas pipe, so that the outer hose contained in the gas pipe can be squeezed, so that the gap between the outer hose and the inner hard pipe becomes narrower, and the flow rate of the gas is accelerated; Furthermore, an inner hard tube is provided. When the gap between the outer soft tube and the inner hard tube reaches the maximum limit, the fixed block will drive the gas pipe to move through the guide rod, thereby realizing multi-range movement of the gas pipe inside the monitoring box, thereby achieving fully accelerated heat dissipation inside the monitoring box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the monitoring box of the present invention; Figure 3 This is a schematic diagram of the back cross-sectional structure of the monitoring box of the present invention; Figure 4 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 5 This is a schematic diagram of the main structure of the connecting plate of the present invention; Figure 6 This is a schematic diagram of the main structure of the accommodation rod of the present invention; Figure 7 This is a schematic diagram of the main structure of the bonding piece of the present invention; Figure 8 It is a schematic diagram of the rear view structure of the bonding member of the present invention; Fig. 9 It is a schematic diagram of the cross-sectional structure of the accommodation rod of the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the gas transmission pipe of the present invention.

[0018] In the figure: 1. monitoring box; 2. door panel; 3. heat dissipation port; 4. fixed block; 5. silicone rubber airbag; 6. rotating block; 7. cam; 8. torsion spring; 9. resistance block; 10. connecting spring; 11. movable shaft; 12. slide slot; 13. rotating rod; 14. power-off connecting plate; 141. fitting frame; 142. elastic air bag; 15. conductive connecting block; 16. cross bar; 17. accommodating rod; 18. air hose; 19. reset spring; 20. air pipe; 201. outer hose; 202. inner hard pipe; 21. jet port; 22. rotating rod; 23. oblique rod; 24. cross plate; 25. fitting; 26. guide rail; 27. fixed block; 28. guide rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 10 , the present invention provides the following technical solutions: Embodiment 1: In order to provide sufficient circuit breaker protection inside the monitoring box 1, please refer to the attached Figure 1 -Attached Figure 6 , including a monitoring box 1, a door panel 2 and a heat dissipation port 3, the surface of the monitoring box 1 is hinged with the door panel 2, and the surface of the door panel 2 and the back of the monitoring box 1 are provided with heat dissipation ports 3; it also includes: a fixing block 4 is fixed at the lower right side of the monitoring box 1, a silicone rubber airbag 5 is fixed at the lower position of the fixing block 4, the bottom position of the silicone rubber airbag 5 acts on the driving mechanism, and the top position of the driving mechanism is connected to the power-off protection mechanism to realize the power-off protection processing of the electrical components inside the monitoring box 1; the power-off protection mechanism includes the right side of the monitoring box 1 The power-off connecting plate 14 is arranged inside the side, the right end of the cross bar 16 is fixed at the corners around the left side of the power-off connecting plate 14, the left end of the cross bar 16 is slidably arranged inside the accommodation rod 17, the end of the cross bar 16 extending into the accommodation rod 17 is provided with a return spring 19, the left end of the return spring 19 is fixed inside the accommodation rod 17, the right end of the return spring 19 is fixed at the left end of the cross bar 16, one end of the cross bar 16 is tightly fitted inside the accommodation rod 17, and the left end of the accommodation rod 17 is fixed inside the monitoring box 1. The driving mechanism includes a rotating block 6 connected to the bottom position of the silicone rubber airbag 5, the rotating block 6 is tilted, the lower end position of the rotating block 6 is fixed at the center position of the cam 7, the rear end position of the cam 7 is rotatably arranged inside the monitoring box 1, the rear axis position of the cam 7 is connected to the head end position of the torsion spring 8, and the tail end of the torsion spring 8 is fixed inside the monitoring box 1. The bottom end of the resisting block 9 is spherical, and the middle outer side of the resisting block 9 is fixed to the top of the connecting spring 10, the bottom position of the connecting spring 10 is fixed to the top position of the fixed block 4, and the resisting block 9 forms an elastic sliding structure between the connecting spring 10 and the inside of the fixed block 4. The inside of the silicone rubber airbag 5 is filled with an expansion material, and the power-off protection mechanism includes a resisting block 9 that fits the groove position inside the cam 7, the middle part of the resisting block 9 runs through the left end of the fixed block 4, and the top of the resisting block 9 is provided with a slide groove 12, and the inside of the slide groove 12 is slidably provided with a movable shaft 11, and the top position of the movable shaft 11 is rotatably set at the bottom end of the rotating rod 13, and the oblique upper end position of the rotating rod 13 fits the inner position of the power-off connecting plate 14. The right end of the power-off connecting plate 14 fits the side of the conductive connecting block 15, and the connection end position of the conductive connecting block 15 corresponds to the electrical components inside the monitoring box 1, and the middle lower position of the rotating rod 13 is rotatably set on the inner wall of the monitoring box 1.

[0021] First, when an arc occurs inside the monitoring box 1, a large amount of heat will be generated inside the monitoring box 1, and the interior of the silicone rubber airbag 5 is filled with an expansion material. At the same time, the expansion material can not only include paraffin and ammonium nitrate, but also can be other materials with a high thermal expansion coefficient, so that the silicone rubber airbag 5 can expand when heated. Since the top of the silicone rubber airbag 5 is fixed to the bottom position of the fixed block 4, and the bottom of the silicone rubber airbag 5 is attached to the top position of the rotating block 6, the cam 7 fixed at the lower end of the rotating block 6 can rotate around the center of the cam 7. Due to the groove provided on the inner side of the cam 7, the resistance block 9 fitted inside the cam 7 can slide inside the fixed block 4. At this time, the torsion spring 8 connected to the rear side of the cam 7 will be deformed, and the other The connecting spring 10 arranged at the middle position of the outer contact block 9 will also be deformed. When the contact block 9 rises, the slide groove 12 opened at the top of the contact block 9 will also drive the movable shaft 11 to change its position. At this time, the rotating rod 13 arranged at the top position of the movable shaft 11 rotates around the middle and lower end position. At this time, the upper left end position of the rotating rod 13 will squeeze the right side of the power-off connecting plate 14, and the movable shaft 11 connected to the rotating rod 13 will slide inside the slide groove 12. The power-off connecting plate 14 is guided and slid inside the accommodating rod 17 through the cross bar 16. At this time, the right side position of the power-off connecting plate 14 will be disconnected from the conductive connecting block 15, thereby avoiding the continuous occurrence of arc light, which leads to the continuous increase of heat inside the monitoring box 1, and even causes a fire.

[0022] Embodiment 2: In order to solve the problem that a large amount of heat is generated when an arc occurs in the photovoltaic box-type arc protection system currently on the market, the heat is stored inside the box. It takes a long time to dissipate the heat only through the heat dissipation window. When the arc occurs next time, the temperature inside the box will continue to increase, and even cause a fire in the box. Please refer to the attached Figure 1 -Attached Fig. 9A group of gas hoses 18 are connected to the outside of the bottom of the accommodating rod 17, and the bottom position of the gas hose 18 is connected to the top of the gas pipe 20. The bottom end of the gas pipe 20 is evenly connected with jet nozzles 21. An accelerated heat dissipation mechanism is set on the outside of the gas pipe 20. One side of the accelerated heat dissipation mechanism is connected to the driving mechanism, which can realize the accelerated heat dissipation mechanism. Move the internal position of the right end of the monitoring box 1 to achieve a multi-range heat dissipation treatment, the rear side position of the power-off connection plate 14 is fixed to the right side position of the fitting frame 141, and the left end inner side of the fitting frame 141 fits on the elastic gas bag At the left wall position of 142, a one-way air inlet valve is arranged on the outer side of the elastic air delivery bag 142, and a one-way air outlet valve is arranged on the end of the elastic air delivery bag 142 connected to the hose. The bottom position of the elastic air delivery bag 142 is connected to the middle position of the air delivery pipe 20 through the hose. The air delivery pipe 20 includes an outer hose 201 arranged on the outer side, and an inner hard tube 202 is fixed inside the outer hose 201. The inner hard tube 202 and the outer hose 201 are connected to the air port position at the bottom of the air delivery hose 18, and the outer sides of the inner hard tube 202 and the outer hose 201 are connected to the air port of the jet port 21. The convex end of the cam 7 is rotatably connected to a rotating rod 22, the middle outer side of the rotating rod 22 is rotatably connected to the right end of the inclined rod 23, the left end of the inclined rod 23 is rotatably connected to the right end of the cross plate 24, and a fitting 25 is fixed to the top position of the left end of the cross plate 24. The bottom inner side of the fitting 25 is slidably arranged inside the guide rail 26, and the bottom of the guide rail 26 is welded to the internal position of the monitoring box 1.

[0023] When the power-off connecting plate 14 moves, the top cross bar 16 arranged on the left side of the power-off connecting plate 14 slides inside the accommodating rod 17, so that the gas inside the accommodating rod 17 can be transported through the gas hose 18, and the reset spring 19 arranged inside the accommodating rod 17 will be compressed, which is convenient for the later reset of the power-off connecting plate 14, and the gas inside the accommodating rod 17 will also be transported through the gas hose 18. At this time, the fitting frame 141 arranged on the rear side of the power-off connecting plate 14 will also squeeze the elastic gas bag 142 fixed on the inner side of the monitoring box 1, so that the gas will also be transported to the inside of the gas pipe 20 through the hose, and the setting of the elastic gas bag 142 and the accommodating rod 17 will stably transport the gas to the inside of the gas pipe 20, and spray it to the inside of the monitoring box 1 through the jet port 21, thereby accelerating the heat dissipation of the internal heat of the monitoring box 1 through the heat dissipation port 3.

[0024] Embodiment 3: In order to expand the heat dissipation effect inside the monitoring box 1, please refer to the attached Figure 1 -Attached Figure 5 and attached Fig.10, one side of the upper end of the fitting 25 is fitted on the outside of the gas pipe 20, a one-way air outlet valve is provided at the end of the gas pipe 20 connected to the gas hose 18, and a one-way air inlet valve is provided at the outside of the accommodating rod 17. The side of the gas pipe 20 away from the fitting 25 is fixed to the inner side of the fixed patch 27, the convex rod of the fixed patch 27 is slidably provided inside the guide rod 28, and the rear end of the guide rod 28 is fixed to the inner wall of the monitoring box 1; the fixed patch 27 forms a sliding structure between the fitting 25 and the inside of the guide rod 28, and the end of the convex rod of the fixed patch 27 that contacts the guide rod 28 is connected by a spring; When the cam 7 rotates, the rotating rod 22 fixed at the convex end position of the cam 7 rotates, so that the rotating rod 22 drives the inclined rod 23 to rotate. At this time, the inclined lower end position of the inclined rod 23 drives the cross plate 24 and the fitting 25 to move stably through the guide rail 26. When the fitting 25 moves, the gas pipe 20 fitted on one side of the fitting 25 is squeezed, and the gas will be continuously transported. In addition, the gas pipe 20 is provided with an outer hose 201 and an inner hard pipe 202, so that one side of the fitting 25 can be pressed against the inner hard pipe 202. The inner tube 202 and the outer hose 201 are squeezed to narrow the distance between them, so that the air flow is accelerated. In addition, when the outer hose 201 is squeezed to the maximum, the setting of the inner tube 202 will provide a bearing effect for the fitting 25. At this time, the fitting 25 will drive the air pipe 20 and the fixed block 27 to move through the guide rod 28, so as to realize the movement of the air pipe 20 in the internal position of the monitoring box 1, so as to realize the movement to different positions inside the monitoring box 1 and realize the accelerated heat dissipation treatment in multiple ranges.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A box-type arc protection system for photovoltaics, comprising a monitoring box (1), a door panel (2) and a heat dissipation port (3), wherein the door panel (2) is hingedly connected to the surface of the monitoring box (1), and the heat dissipation port (3) is provided on the surface of the door panel (2) and at the back of the monitoring box (1); It is characterized in that Also includes: A fixing block (4) is fixed at the lower right side of the monitoring box (1), a silicone rubber airbag (5) is fixed at the lower side of the fixing block (4), the bottom of the silicone rubber airbag (5) acts on the driving mechanism, and the top of the driving mechanism is connected to the power-off protection mechanism, so as to implement power-off protection processing for the electrical components inside the monitoring box (1); The power-off protection mechanism comprises a power-off connection plate (14) arranged inside the right side of the monitoring box (1); the right end of a cross bar (16) is fixed at the left corners of the power-off connection plate (14); the left end of the cross bar (16) is slidably arranged inside the accommodating rod (17); a return spring (19) is arranged at one end of the cross bar (16) extending into the accommodating rod (17); the left end of the return spring (19) is fixed inside the accommodating rod (17); the right end of the return spring (19) is fixed at the left end of the cross bar (16); one end of the cross bar (16) is tightly fitted inside the accommodating rod (17); and the left end of the accommodating rod (17) is fixed inside the monitoring box (1); A group of gas hoses (18) are connected to the outside of the bottom of the containing rod (17); the bottom of the gas hoses (18) are connected to the top of the gas pipe (20); the bottom of the gas pipe (20) is connected to jet nozzles (21) at equal intervals; an accelerated heat dissipation mechanism is arranged on the outside of the gas pipe (20); one side of the accelerated heat dissipation mechanism is connected to a driving mechanism, so that the accelerated heat dissipation mechanism can be moved inside the right end of the monitoring box (1) to achieve heat dissipation treatment in multiple ranges.

2. A photovoltaic box-type arc protection system according to claim 1, characterized in that: The driving mechanism comprises a rotating block (6) connected to the bottom position of the silicone rubber airbag (5); the rotating block (6) is arranged to be inclined; the lower end position of the rotating block (6) is fixed at the center position of a cam (7); the rear end position of the cam (7) is rotatably arranged inside the monitoring box (1); the rear axis position of the cam (7) is connected to the head end position of a torsion spring (8); and the tail end of the torsion spring (8) is fixed inside the monitoring box (1).

3. A photovoltaic box-type arc protection system according to claim 2, characterized in that: A resistance block (9) is fitted on the upper inner side of the cam (7), the bottom end of the resistance block (9) is spherical, and the outer middle part of the resistance block (9) is fixed to the top of the connecting spring (10), the bottom of the connecting spring (10) is fixed to the top of the fixed block (4), the resistance block (9) forms an elastic sliding structure between the connecting spring (10) and the inside of the fixed block (4), and the inside of the silicone rubber airbag (5) is filled with an expansion substance.

4. A photovoltaic box-type arc protection system according to claim 1, characterized in that: The power-off protection mechanism comprises a contact block (9) which fits in a groove position on the inner side of the cam (7); the middle part of the contact block (9) penetrates the left end of the fixed block (4); a slide groove (12) is provided on the top of the contact block (9); a movable shaft (11) is slidably arranged inside the slide groove (12); the top position of the movable shaft (11) is rotatably arranged at the bottom end of a rotating rod (13); and the oblique upper end position of the rotating rod (13) fits in an inner side position of the power-off connection plate (14).

5. A photovoltaic box-type arc protection system according to claim 4, characterized in that: The outer side of the right end of the power-off connection plate (14) is attached to the side of the conductive connection block (15); the connection end of the conductive connection block (15) corresponds to the electrical components inside the monitoring box (1); and the middle lower part of the rotating rod (13) is rotatably arranged on the inner wall of the monitoring box (1).

6. A photovoltaic box-type arc protection system according to claim 4, characterized in that: The rear side of the power-off connection plate (14) is fixed to the right side of the fitting frame (141); the inner side of the left end of the fitting frame (141) fits the left wall of the elastic air delivery bag (142); the side wall of the elastic air delivery bag (142) is fixed to the inner wall of the monitoring box (1); a one-way air inlet valve is arranged on the outer side of the elastic air delivery bag (142); a one-way air outlet valve is arranged at one end of the elastic air delivery bag (142) connected to the hose; and the elastic air delivery bag (142) is provided with a one-way air outlet valve. The bottom position of the gas supply pipe (142) is connected to the middle position of the gas supply pipe (20) through a hose. The gas supply pipe (20) includes an outer hose (201) arranged on the outside. An inner hard pipe (202) is fixed inside the outer hose (201). The inner hard pipe (202) and the outer hose (201) are connected to the gas outlet position at the bottom of the gas supply hose (18). The outer sides of the inner hard pipe (202) and the outer hose (201) are connected to the gas outlet of the air jet port (21).

7. A photovoltaic box-type arc protection system according to claim 2, characterized in that: The convex end of the cam (7) is rotatably connected to a rotating rod (22), the outer middle portion of the rotating rod (22) is rotatably connected to the right end of the inclined rod (23), the left end of the inclined rod (23) is rotatably connected to the right end of a horizontal plate (24), a fitting (25) is fixed to the top of the left end of the horizontal plate (24), the bottom inner side of the fitting (25) is slidably arranged inside a guide rail (26), and the bottom of the guide rail (26) is welded to an internal position of the monitoring box (1).

8. A photovoltaic box-type arc protection system according to claim 7, characterized in that: One side of the upper end of the fitting (25) is fitted on the outside of the gas pipe (20), a one-way gas outlet valve is provided at the end of the gas pipe (20) connected to the gas hose (18), and a one-way gas inlet valve is provided on the outside of the accommodating rod (17).

9. A photovoltaic box-type arc protection system according to claim 7, characterized in that: The side of the gas delivery pipe (20) away from the fitting (25) is fixed to the inner side of the fixed patch (27), the protruding rod of the fixed patch (27) is slidably arranged inside the guide rod (28), and the rear end of the guide rod (28) is fixed to the inner wall of the monitoring box (1).

10. A photovoltaic box-type arc protection system according to claim 9, characterized in that: The fixed patch (27) forms a sliding structure between the fitting (25) and the inside of the guide rod (28), and the end of the protruding rod of the fixed patch (27) that contacts the guide rod (28) is connected via a spring.

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