Position-limited adjustable photovoltaic power distribution cabinet

Abstract

The utility model relates to a power distribution cabinet technical field especially for a photovoltaic power distribution cabinet of spacing adjustable, including power distribution cabinet, the cable for the power transmission from power supply to electric equipment or load function is fixedly connected with in power distribution cabinet inside, the mounting support is fixedly connected with in power distribution cabinet inside, the moving groove is seted up in mounting support inside, the fixed device is connected with in moving groove inside sliding, the fixed device includes the moving block, the installation slot is seted up in moving block top, the first spring is fixedly connected with in installation slot inside, the other end fixed connection of first spring has the pressing support, the nile pad is fixedly connected with in pressing support upper end, the fixed plate one side fixed connection of moving block is close to fixedly connected with the installation pad, in the utility model, set up the fixed device, through the cooperation of hydraulic oil and T shape fixed column, can automatically adapt the cable of expansion and contraction, guarantee cable under the condition of expansion and contraction repeatedly, guarantee that cable will not be intertwined, guarantee power distribution cabinet long -term stable operation.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, specifically a photovoltaic power distribution cabinet with adjustable limit position. Background Technology

[0002] Adjustable limit photovoltaic power distribution cabinets are power distribution equipment designed specifically for photovoltaic power generation systems. Their core advantage lies in their ability to adapt to power fluctuations caused by changes in sunlight and temperature in photovoltaic systems through adjustable electrical parameter limit functions, thereby more accurately protecting circuits and optimizing power distribution. They are one of the key pieces of equipment for the stable operation of photovoltaic systems. The adjustable protection relay in the limit-adjustable photovoltaic power distribution cabinet is the actuator for limit adjustment. It can manually or automatically set protection thresholds such as overvoltage, overcurrent, undervoltage, and short circuit. When the operating current of the overcurrent relay can be adjusted from 10A to 20A, the circuit will be cut off immediately when the actual current exceeds the set value. The incoming line cabinet of the limit-adjustable photovoltaic power distribution cabinet needs to connect to 10 to 30 cables for multiple photovoltaic arrays, and each cable has a cross-section of at least 120mm². 2 Copper cables and photovoltaic power distribution cabinets are mostly located in outdoor or semi-outdoor environments. The cabinet is exposed to solar radiation, and the internal temperature can reach 60°C, dropping to below 10°C at night. The temperature difference between day and night exceeds 50°C. The insulation layer of the cable will expand and contract with the temperature change, with a contraction range of Φ10-Φ50mm. This periodic expansion and contraction movement will cause the originally neat cables to gradually loosen and shift, and the relative positions of adjacent cables will constantly change, eventually becoming entangled, thus increasing the difficulty and workload of maintenance. In view of this, we propose a photovoltaic power distribution cabinet with adjustable limit. Utility Model Content

[0003] The purpose of this utility model is to provide a photovoltaic power distribution cabinet with adjustable limit to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An adjustable photovoltaic power distribution cabinet includes a distribution cabinet with a cable for transmitting power from a power source to electrical equipment or loads fixedly connected to its inner side. A mounting bracket is fixedly connected to the inner side of the distribution cabinet, and a movable groove is formed on the inner side of the mounting bracket. A fixing device is slidably connected to the inner side of the movable groove. The fixing device includes a movable block with a mounting groove on its upper side. A first spring is fixedly connected to the inner side of the mounting groove, and a pressing bracket is fixedly connected to the other end of the first spring. A nylon pad is fixedly connected to the upper end of the pressing bracket. A mounting pad is fixedly connected to the side of the movable block near the fixing plate. A mounting hole is formed on the side of the movable block where the mounting pad is located. A second spring is fixedly connected to the inner side of the second spring, and a mounting post is fixedly connected to the inner ring of the second spring. A fixing plate is fixedly connected to the other end of the mounting post. A pressing plate is fixedly connected to the side of the fixing plate where the mounting post is located. Hydraulic oil is provided inside the pressing plate. A fixing post is slidably connected to one side of the fixing plate, and a rubber block is fixedly connected to one end of the fixing post.

[0005] As a further optimization of this utility model, the following features are provided: hydraulic oil is provided on the inner side of the extrusion plate; a fixed column is slidably connected to one side of the extrusion plate; a rubber block is fixedly connected to one end of the fixed column; the moving grooves are staggered on the same plane; and the shape of the moving grooves is set as a cuboid.

[0006] As a further optimization of this utility model, two mounting slots and two pressing brackets are provided. The vertical cross-sections of the mounting slots and the pressing brackets are both U-shaped. The mounting slots and the pressing brackets are symmetrically arranged on both sides of the moving block. The pressing brackets are installed inside the mounting slots by a first spring and are slidably connected to the inside of the mounting slots.

[0007] As a further optimization of this utility model, two mounting holes are provided, which are symmetrically arranged on the inner side of the moving block. The mounting holes are cylindrical in shape, parallel to each other, and slidably connected to the mounting column.

[0008] As a further optimization of this utility model, the second spring and the mounting post are configured as two, each corresponding to a mounting hole, and are parallel to each other. Both the second spring and the mounting post are installed inside the mounting hole, and are perpendicular to the fixing plate.

[0009] As a further optimization of this utility model, the hydraulic oil is located at three-quarters of the inner side of the extrusion plate, one end of the fixing column is in close contact with the hydraulic oil, the fixing column is T-shaped, and the fixing columns are evenly and equidistantly distributed on the inner side of the extrusion plate.

[0010] As a further optimization of this utility model, the cross-section of the rubber block is semi-circular, the rubber blocks are parallel to each other, the rubber blocks are evenly and equidistantly distributed on one side of the fixed column, and the rubber blocks correspond one-to-one with the fixed column.

[0011] Compared with the prior art, the beneficial effects of this utility model are: In this utility model, the fixing device has self-adaptive fixing capability. Through the cooperation of hydraulic oil and T-shaped fixing column, it can automatically adapt to cables of different thicknesses. The semi-circular design of the rubber block can ensure uniform clamping force and avoid excessive compression that could damage the cable insulation layer. It can stably fix cables in the range of Φ10-Φ50mm without manual adjustment, ensuring that the cables will not tangle with each other under repeated expansion and contraction, thus ensuring the long-term stable operation of the distribution cabinet. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation position of the movable slot of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the fixing device of this utility model; Figure 4 This is a schematic diagram of the cross-sectional structure of the movable block of this utility model; Figure 5 This is a schematic diagram of the installation position structure of the mounting column of this utility model; Figure 6 This is a schematic diagram of the cross-sectional structure of the extrusion plate of this utility model.

[0013] In the diagram: 1. Distribution cabinet; 2. Cable; 3. Mounting bracket; 4. Fixing device; 41. Moving block; 42. Mounting slot; 43. First spring; 44. Pressing bracket; 45. Nylon pad; 46. Mounting pad; 47. Mounting hole; 48. Second spring; 49. Mounting post; 410. Fixing plate; 411. Extrusion plate; 412. Hydraulic oil; 413. Fixing post; 414. Rubber block; 5. Moving slot. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0016] Please see Figures 1-6 This utility model provides a technical solution: An adjustable photovoltaic power distribution cabinet includes a distribution cabinet 1. A cable 2 for transmitting power from a power source to electrical equipment or load is fixedly connected to the inside of the distribution cabinet 1. A mounting bracket 3 is fixedly connected to the inside of the distribution cabinet 1. A movable groove 5 is formed inside the mounting bracket 3, and a fixing device 4 is slidably connected inside the movable groove 5. The fixing device 4 includes a movable block 41, and a mounting groove 42 is formed above the movable block 41. A first spring 43 is fixedly connected inside the mounting groove 42, and a pressing bracket 44 is fixedly connected to the other end of the first spring 43. A nylon pad 4 is fixedly connected to the upper end of the pressing bracket 44. 5. A mounting pad 46 is fixedly connected to the side of the movable block 41 near the fixed plate 410. A mounting hole 47 is opened on the side of the movable block 41 where the mounting pad 46 is located. A second spring 48 is fixedly connected to the inside of the mounting hole 47. A mounting post 49 is fixedly connected to the inner ring of the second spring 48. A fixed plate 410 is fixedly connected to the other end of the mounting post 49. A pressing plate 411 is fixedly connected to the side of the fixed plate 410 where the mounting post 49 is located. Hydraulic oil 412 is provided inside the pressing plate 411. A fixed post 413 is slidably connected to the side of the pressing plate 411. A rubber block 414 is fixedly connected to one end of the fixed post 413.

[0017] It should be noted that: hydraulic oil 412 is provided inside the extrusion plate 411 through the set moving groove 5, a fixed column 413 is slidably connected to one side of the extrusion plate 411, a rubber block 414 is fixedly connected to one end of the fixed column 413, the moving groove 5 is staggered on the same plane, and the shape of the moving groove 5 is set as a cuboid.

[0018] Specifically: The mounting slot 42 and the pressing bracket 44 are provided in twos. The vertical cross-section of the mounting slot 42 and the pressing bracket 44 are both U-shaped. The mounting slot 42 and the pressing bracket 44 are symmetrically arranged on both sides of the moving block 41. The pressing bracket 44 is installed inside the mounting slot 42 by the first spring 43 and is slidably connected to the inside of the mounting slot 42.

[0019] Further explanation: The movable groove 5 can be easily moved to different positions to facilitate the installation and fixing of cables 2 in various parts. The mounting groove 42 can stably fix the movable block 41 in any position of the movable groove 5. When it is necessary to replace the cable 2, release the fixing of the movable block 41 and slide the entire fixing device 4 away from the faulty cable 2 area along the movable groove 5. After replacing the cable 2, repeat the steps of position adjustment, cable 2 clamping, and elastic locking to re-fix the new cable 2.

[0020] As a further implementation of the above technical solution: Two mounting holes 47 are provided, symmetrically arranged on the inner side of the moving block 41. The mounting holes 47 are cylindrical in shape and parallel to each other. The mounting holes 47 are slidably connected to the mounting posts 49. Two second springs 48 and mounting posts 49 are provided, each corresponding to one of the mounting holes 47. The second springs 48 and mounting posts 49 are parallel to each other and are both installed inside the mounting holes 47. The second springs 48 and mounting posts 49 are perpendicular to the fixing plate 410.

[0021] It should be noted that: the hydraulic oil 412 is set at three-quarters of the inner side of the extrusion plate 411, one end of the fixing column 413 is in close contact with the hydraulic oil 412, the fixing column 413 is T-shaped, and the fixing columns 413 are evenly and equidistantly distributed on the inner side of the extrusion plate 411.

[0022] Specifically: the fixing device 4 can effectively tighten and fix the constantly expanding and contracting cable 2 to prevent the wire from getting tangled, which facilitates later maintenance. The pressure of the hydraulic oil 412 can be monitored by a pressure gauge to ensure that it is within a safe range, usually ≤2MPa.

[0023] Furthermore, the first spring 43 and the second spring 48, together with the hydraulic oil 412, form a dual damping structure that can absorb the cable expansion and contraction stress caused by temperature changes and the vibration energy of the equipment, reducing the risk of cable fatigue fracture. This structure is suitable for the environment of photovoltaic power stations with large day-night temperature differences and frequent vibrations. The first spring 43 and the second spring 48 are made of 60Si2Mn spring steel, which has excellent elastic limit and fatigue strength and can maintain stable elasticity even in multiple compression and reset cycles.

[0024] Work process: The movable block 41 of the fixing device 4 slides on the mounting bracket 3 through the movable groove 5. The movable groove 5 is staggered on the same plane, so that the movable block 41 can reach any position in the distribution cabinet 1. The pressing brackets 44 on both sides of the movable block 41 are pushed by the first spring 43 and tightly fit the inner wall of the movable groove 5 to achieve initial fixation. At this time, the first spring 43 is in a slightly compressed state. The fixing plate 410 is connected to the movable block 41 through the mounting column 49. The second spring 48 is in a natural state, so that the fixing plate 410 and the movable block 41 maintain the initial distance. The extrusion plate 411 is filled with three-quarters of the volume of hydraulic oil 412. The fixing column 413 is evenly distributed under the pressure of the hydraulic oil 412. The rubber block 414 protrudes from the surface of the extrusion plate 411 in a semi-circular shape. The maintenance personnel manually push the moving block 41, allowing it to slide along the moving groove 5 to the target cable 2 position. They press the pressing bracket 44, compressing the first spring 43 and releasing the lock on the moving block 41 for precise positioning. The cable 2 is then placed between the two extrusion plates 411. The fixing plate 410 is pushed inwards, compressing the second spring 48. The fixing plate 410 moves the extrusion plates 411 closer to the cable 2. The hydraulic oil 412 is compressed, generating pressure that pushes the fixing post 413 towards the cable 2. The rubber block 414 contacts the surface of the cable 2, automatically adjusting its position according to the cable 2's outer diameter. For thinner cables 2, more fixing posts 413 extend, while for thicker cables, only a portion extends. The fixed post 413 retracts, forming a uniform wrapping force. The elastic force of the second spring 48 continues to act on the extrusion plate 411 through the fixed plate 410, maintaining the clamping force on the cable 2. The incompressibility of the hydraulic oil 412 ensures uniform pressure distribution and avoids excessive local stress that could damage the insulation layer of the cable 2. When the cable 2 expands due to heat generated by electricity, the rubber block 414 is pressed into the extrusion plate 411, and the pressure of the hydraulic oil 412 increases. However, the second spring 48 is further compressed to buffer the expansion force and prevent excessive compression. When the temperature decreases and the cable 2 contracts, the second spring 48 rebounds, pushing the extrusion plate 411 to continue clamping the cable 2 and maintaining reliable fixation.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic power distribution cabinet with adjustable limit, comprising a power distribution cabinet (1), characterized in that: The distribution cabinet (1) has a cable (2) for transmitting power from the power source to the electrical equipment or load function fixedly connected to its inner side. The distribution cabinet (1) has a mounting bracket (3) fixedly connected to its inner side. The mounting bracket (3) has a moving groove (5) on its inner side. The moving groove (5) has a fixing device (4) slidably connected to its inner side. The fixing device (4) includes a movable block (41), an installation groove (42) is provided above the movable block (41), a first spring (43) is fixedly connected to the inner side of the installation groove (42), a pressing bracket (44) is fixedly connected to the other end of the first spring (43), a nylon pad (45) is fixedly connected to the upper end of the pressing bracket (44), an installation pad (46) is fixedly connected to the side of the movable block (41) near the fixing plate (410), an installation hole (47) is provided on the side of the movable block (41) where the installation pad (46) is provided, a second spring (48) is fixedly connected to the inner side of the installation hole (47), an installation post (49) is fixedly connected to the inner ring of the second spring (48), a fixing plate (410) is fixedly connected to the other end of the installation post (49), and a pressing plate (411) is fixedly connected to the side of the fixing plate (410) where the installation post (49) is provided.

2. The adjustable limit photovoltaic power distribution cabinet according to claim 1, characterized in that: Hydraulic oil (412) is provided on the inner side of the extrusion plate (411). A fixed column (413) is slidably connected to one side of the extrusion plate (411). A rubber block (414) is fixedly connected to one end of the fixed column (413). The moving grooves (5) are staggered on the same plane. The shape of the moving grooves (5) is set as a cuboid.

3. The adjustable limit photovoltaic power distribution cabinet according to claim 1, characterized in that: The mounting slot (42) and the pressing bracket (44) are both provided in twos. The vertical cross-section of the mounting slot (42) and the pressing bracket (44) are both set to U-shape. The mounting slot (42) and the pressing bracket (44) are symmetrically arranged on both sides of the moving block (41). The pressing bracket (44) is installed inside the mounting slot (42) by the first spring (43). The pressing bracket (44) is slidably connected to the inside of the mounting slot (42).

4. The adjustable limit photovoltaic power distribution cabinet according to claim 1, characterized in that: Two mounting holes (47) are provided. The mounting holes (47) are symmetrically arranged on the inside of the moving block (41). The shape of the mounting holes (47) is cylindrical. The mounting holes (47) are parallel to each other. The mounting holes (47) are slidably connected to the mounting column (49).

5. The adjustable limit photovoltaic power distribution cabinet according to claim 1, characterized in that: The second spring (48) and the mounting post (49) are set to two, and the second spring (48) and the mounting post (49) correspond one-to-one with the mounting hole (47). The second spring (48) and the mounting post (49) are parallel to each other. The second spring (48) and the mounting post (49) are both installed inside the mounting hole (47). The second spring (48) and the mounting post (49) are perpendicular to the fixing plate (410).

6. The adjustable limit photovoltaic power distribution cabinet according to claim 2, characterized in that: The hydraulic oil (412) is located at three-quarters of the inner side of the extrusion plate (411). One end of the fixing column (413) is in close contact with the hydraulic oil (412). The fixing column (413) is T-shaped and is evenly distributed on the inner side of the extrusion plate (411).

7. The adjustable limit photovoltaic power distribution cabinet according to claim 2, characterized in that: The cross-section of the rubber block (414) is semi-circular. The rubber blocks (414) are parallel to each other and are evenly and equidistantly distributed on one side of the fixed column (413). The rubber blocks (414) correspond one-to-one with the fixed column (413).

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