Photovoltaic array fault diagnosis and maintenance device

Abstract

The utility model discloses a photovoltaic array fault diagnosis maintenance device comprising a maintenance box, the upper surface of the maintenance box is movably hinged with a box cover through a hinge, the inner wall of the box cover is fixedly provided with a display screen, the maintenance box is internally provided with a protection frame, the protection frame is internally fixedly provided with a fault diagnosis unit, and the maintenance box is internally provided with a power supply. The bottom face of the protection frame is fixedly connected with two sets of damping supporting rods, and the inner wall of the maintenance box is fixedly connected with a fixing plate. According to the device, the fault diagnosis unit is installed in the protection frame, the protection frame is installed in the maintenance box, damping supporting rods and damping springs in the maintenance box are matched with the protection frame, vibration generated by the protection frame in the carrying process can be buffered, meanwhile, through cooperation of a damper at the bottom of the protection frame, the vibration can be absorbed, and the service life of the device is prolonged. And the fault diagnosis unit and the tool box are integrated into a whole, so that field fault diagnosis and maintenance can be conveniently carried out on the photovoltaic array.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic maintenance, in particular to a photovoltaic array fault diagnosis and maintenance device. Background Art

[0002] Photovoltaic is the abbreviation of solar photovoltaic power generation system. It is a new power generation system that uses the photovoltaic effect of solar cell semiconductor materials to directly convert solar radiation energy into electrical energy. It has two modes of operation: independent operation and grid-connected operation. Photovoltaic power station is a photovoltaic power generation system connected to the power grid and transmits electricity to the power grid. It can be divided into grid-connected power generation systems with and without batteries. Solar power generation is divided into solar thermal power generation and photovoltaic power generation. Solar power generation usually refers to solar photovoltaic power generation.

[0003] With the advancement of photovoltaic power generation technology, the scale of photovoltaic power generation is expanding. The faults of photovoltaic power stations are mainly concentrated on the DC side of photovoltaic power stations. Therefore, the fault diagnosis of photovoltaic arrays is of great significance to the efficient operation of photovoltaic power stations. After obtaining the photovoltaic fault, maintenance tools are needed for maintenance. However, the existing maintenance equipment is not convenient for carrying diagnostic detection equipment. The diagnostic detection equipment is easily damaged by collision, which affects the use of photovoltaic maintenance. For this reason, we propose a photovoltaic array fault diagnosis and maintenance device to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a photovoltaic array fault diagnosis and repair device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A photovoltaic array fault diagnosis and maintenance device comprises an inspection box, the upper surface of the inspection box is hinged with a box cover by a hinge, the inner wall of the box cover is fixedly installed with a display screen, the interior of the inspection box is provided with a protection frame, the interior of the protection frame is fixedly installed with a fault diagnosis unit, the bottom surface of the protection frame is fixedly connected with two groups of shock-absorbing support rods, the inner wall of the inspection box is fixedly connected with a fixing plate, the upper surface of the fixing plate is provided with a sliding hole, the bottom end of each of the shock-absorbing support rods passes through the sliding hole and extends to the bottom of the fixing plate, the outer surface of each of the shock-absorbing support rods is sleeved with a shock-absorbing spring, a damper is fixedly installed in the middle of the fixing plate, the top of the damper is connected to the bottom surface of the protection frame, a tool drawer is provided inside the inspection box, and a partition is fixedly connected to the interior of the tool drawer.

[0007] In a further embodiment, two connecting rods are fixedly installed on the left and right sides of the maintenance box, and the ends of the two groups of connecting rods away from each other are fixedly connected to push handles, and the bottom surface of the maintenance box is fixedly installed with moving wheels.

[0008] In a further embodiment, a handle is fixedly connected to the upper surface of the box cover, heat dissipation holes are opened on the left and right sides of the box cover, and a plurality of heat sinks are fixedly connected to the back side of the box cover.

[0009] In a further embodiment, a pull-out panel is provided on the front of the maintenance box, a fixed lock is installed on the front of the pull-out panel, and a side surface of the pull-out panel is connected to the tool drawer.

[0010] In a further embodiment, two anti-collision pads are fixedly connected to the front and back of the inspection box, and an identification plate is provided on the front of the inspection box.

[0011] In a further embodiment, two slide grooves are provided on the inner wall of the maintenance box, a slider is slidably connected to the interior of each slide groove, the side surfaces of the two sliders close to each other are connected to the protection frame, and both ends of each shock-absorbing spring are connected to the protection frame and the fixed plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device installs a fault diagnosis unit inside a protection frame, which is installed inside a maintenance box. The shock-absorbing support rods and shock-absorbing springs inside the maintenance box cooperate with the protection frame to buffer the vibration generated by the protection frame during carrying. At the same time, the damper at the bottom of the protection frame can absorb the vibration, thereby protecting the fault diagnosis unit. By integrating the fault diagnosis unit with the tool box, on-site fault diagnosis and maintenance of the photovoltaic array are facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the photovoltaic array fault diagnosis and maintenance device in the unfolded state.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the photovoltaic array fault diagnosis and maintenance device in the closed state.

[0016] Figure 3 This is a front cross-sectional view of the photovoltaic array fault diagnosis and maintenance device.

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of the protection frame in the photovoltaic array fault diagnosis and maintenance device.

[0018] Figure 5 This is a schematic diagram of the three-dimensional structure of the tool drawer in the photovoltaic array fault diagnosis and maintenance device.

[0019] In the figure: 1. Maintenance box; 2. Fixed lock; 3. Identification plate; 4. Fault diagnosis unit; 5. Heat dissipation vent; 6. Handle; 7. Display screen; 8. Box cover; 9. Connecting rod; 10. Push handle; 11. Anti-collision pad; 12. Pull-out panel; 13. Moving wheel; 14. Sliding block; 15. Shock-absorbing spring; 16. Tool drawer; 17. Damper; 18. Protection frame; 19. Sliding hole; 20. Shock-absorbing support rod; 21. Fixed plate; 22. Partition plate; 23. Slide groove. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5In the utility model, the photovoltaic array fault diagnosis and maintenance device includes an inspection box 1, two connecting rods 9 are fixedly installed on the left and right sides of the inspection box 1, and the ends of the two sets of connecting rods 9 that are far away from each other are fixedly connected with push handles 10. The bottom surface of the inspection box 1 is fixedly installed with moving wheels 13. The push handles 10 and the moving wheels 13 cooperate with the inspection box 1, so that the inspection device can be conveniently carried. The upper surface of the inspection box 1 is hinged with a box cover 8, and the upper surface of the box cover 8 is fixedly connected with a handle 6. The left and right sides of the box cover 8 are provided with heat dissipation ports 5. The back of the box cover 8 is fixedly connected with a plurality of heat sinks. The box can be conveniently opened by the handle 6 on the box cover 8 The cover 8, the heat dissipation port 5 and the heat sink facilitate the heat dissipation of the display screen 7. The inner wall of the box cover 8 is fixedly mounted with the display screen 7. By setting the display screen 7, the fault information diagnosed by the fault diagnosis unit 4 can be directly displayed, which is convenient for on-site maintenance. A protective frame 18 is provided inside the maintenance box 1. The fault diagnosis unit 4 is fixedly installed inside the protective frame 18. The fault diagnosis unit 4 includes a data acquisition device and a microprocessor. Since this maintenance device is used to carry and protect the fault diagnosis unit 4, the specific fault detection system and detection data have been disclosed in the existing known Chinese patent No. CN207926521U, and will not be elaborated on here.

[0024] Two groups of shock-absorbing support rods 20 are fixedly connected to the bottom surface of the protection frame 18, and a fixing plate 21 is fixedly connected to the inner wall of the maintenance box 1. A sliding hole 19 is opened on the upper surface of the fixing plate 21. The bottom end of each shock-absorbing support rod 20 passes through the sliding hole 19 and extends to the bottom of the fixing plate 21. The outer surface of each shock-absorbing support rod 20 is sleeved with a shock-absorbing spring 15. A damper 17 is fixedly installed in the middle of the fixing plate 21. The top of the damper 17 is connected to the bottom surface of the protection frame 18. Through the shock-absorbing support rods 20 and the shock-absorbing spring 15 inside the maintenance box 1 5 cooperates with the protection frame 18 to buffer the vibration generated by the protection frame 18, and at the same time, the damper 17 at the bottom of the protection frame 18 cooperates to absorb the vibration to ensure stability during the movement. The inner wall of the maintenance box 1 is provided with two slide grooves 23, and the inside of each slide groove 23 is slidably connected with a slider 14. The side surfaces of the two sliders 14 that are close to each other are connected to the protection frame 18. Both ends of each shock-absorbing spring 15 are connected to the protection frame 18 and the fixing plate 21. The slide grooves 23 and the sliders 14 cooperate with the protection frame 18 to perform shock absorption and buffering.

[0025] A tool drawer 16 is provided inside the maintenance box 1, and a partition 22 is fixedly connected to the inside of the tool drawer 16. A pull-out panel 12 is provided on the front of the maintenance box 1, and a fixed lock 2 is installed on the front of the pull-out panel 12. One side of the pull-out panel 12 is connected to the tool drawer 16. The tool drawer 16 can be easily pulled out by cooperating with the pull-out panel 12. A partition 22 is provided in the tool drawer 16 to separate the tools. Two anti-collision pads 11 are fixedly connected to the front and the back of the maintenance box 1. An identification plate 3 is provided on the front of the maintenance box 1. By arranging the anti-collision pad 11 on the outside of the maintenance box 1, it can play a role of safety protection. The identification plate 3 is convenient for marking the maintenance box 1.

[0026] The working principle of the utility model is:

[0027] When in use, first, the maintenance box 1 is moved to the maintenance position by the push handle 10 on the maintenance box 1 in conjunction with the moving wheel 13. During the movement, the vibration generated by the protection frame 18 is buffered by the shock-absorbing support rod 20 and the shock-absorbing spring 15 inside the maintenance box 1 in conjunction with the protection frame 18. At the same time, the vibration is absorbed by the damper 17 at the bottom of the protection frame 18 to ensure stability during the movement. Then the box cover 8 is opened, and the fault diagnosis unit 4 is connected to the DC side input terminal of the inverter corresponding to the photovoltaic array to be detected through a connecting line. The fault diagnosis unit 4 uses the built-in data acquisition device to collect the photovoltaic operation data, and uses the built-in microprocessor to process the data, and then determines the location of the fault, and directly displays the various data on the display screen 7 of the box cover 8, which is convenient for on-site maintenance. For specific fault diagnosis principles and operations, please refer to the existing patent with Chinese Patent No. CN207926521U. After detecting the location of the fault, the maintenance personnel can open the fixed lock 2 and pull out the tool drawer 16 through the pull-out panel 12 to facilitate the use of tools for maintenance.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Photovoltaic array fault diagnosis and repair device, characterized by: The invention comprises an inspection box (1), wherein the upper surface of the inspection box (1) is hingedly connected to a box cover (8), the inner wall of the box cover (8) is fixedly mounted with a display screen (7), a protection frame (18) is provided inside the inspection box (1), a fault diagnosis unit (4) is fixedly mounted inside the protection frame (18), two groups of shock-absorbing support rods (20) are fixedly connected to the bottom surface of the protection frame (18), a fixing plate (21) is fixedly connected to the inner wall of the inspection box (1), and the upper surface of the fixing plate (21) is provided with a A sliding hole (19), the bottom end of each of the shock-absorbing support rods (20) passes through the sliding hole (19) and extends to the bottom of the fixed plate (21), the outer surface of each of the shock-absorbing support rods (20) is sleeved with a shock-absorbing spring (15), a damper (17) is fixedly installed in the middle of the fixed plate (21), the top end of the damper (17) is connected to the bottom surface of the protection frame (18), and a tool drawer (16) is provided inside the maintenance box (1), and a partition (22) is fixedly connected to the inside of the tool drawer (16).

2. The photovoltaic array fault diagnosis and repair device according to claim 1 is characterized in that: Two connecting rods (9) are fixedly mounted on the left and right sides of the inspection box (1), and push handles (10) are fixedly connected to the ends of the two groups of connecting rods (9) that are away from each other. Moving wheels (13) are fixedly mounted on the bottom surface of the inspection box (1).

3. The photovoltaic array fault diagnosis and repair device according to claim 1 is characterized in that: A handle (6) is fixedly connected to the upper surface of the box cover (8), heat dissipation ports (5) are provided on the left and right sides of the box cover (8), and a plurality of heat sinks are fixedly connected to the back side of the box cover (8).

4. The photovoltaic array fault diagnosis and repair device according to claim 1, characterized in that: The front of the maintenance box (1) is provided with a pull-out panel (12), the front of the pull-out panel (12) is installed with a fixed lock (2), and one side of the pull-out panel (12) is connected to a tool drawer (16).

5. The photovoltaic array fault diagnosis and repair device according to claim 1, characterized in that: Two anti-collision pads (11) are fixedly connected to the front and back of the inspection box (1), and a signboard (3) is provided on the front of the inspection box (1).

6. The photovoltaic array fault diagnosis and repair device according to claim 1, characterized in that: The inner wall of the maintenance box (1) is provided with two slide grooves (23), each of the slide grooves (23) is slidably connected to a slider (14), the side surfaces of the two sliders (14) close to each other are connected to a protection frame (18), and both ends of each shock absorbing spring (15) are connected to the protection frame (18) and the fixing plate (21).

Images