Arc-resistant photovoltaic cable joint structure with self-checking function

Abstract

The utility model relates to arc -resistant photovoltaic cable joint structure technology field with self -checking function especially relates to a kind of arc -resistant photovoltaic cable joint structure with self -checking function, including connecting clamp cover, the connecting clamp cover inside one end fixedly connected with limit sleeve, the limit sleeve inside outer wall set up and be connected with threaded bolt threadedly limiting hole.The threaded bolt drive bracket clamping limit resistance cover, sliding sleeve abuts connection resistance cover, complete preliminary fixation from inside;Limiting sliding block, threaded rod etc. on side plate drive relevant component adjustment position, hinged frame, hinged clamping block etc. are further clamped cable by connecting rod drive clamp cover, multi -direction, multi -level fixed mode ensures the stability of cable connection, effectively reduces the direct current arc phenomenon caused by connection loosening;The close cooperation of each component and reasonable layout improve the arc -resistant ability of overall structure, reduce the risk of arc induced safety accident, guarantee the safe operation of photovoltaic system.

Description

Technical Field

[0001] This utility model relates to the technical field of arc-resistant photovoltaic cable joint structure with self-test function, and in particular to an arc-resistant photovoltaic cable joint structure with self-test function. Background Technology

[0002] In solar power generation systems, photovoltaic cable connectors are key components for power transmission, and their performance directly affects the stability and safety of the entire system. With the rapid development of the solar power generation industry, the requirements for photovoltaic cable connectors are becoming increasingly stringent.

[0003] Traditional photovoltaic cable connectors have revealed numerous problems in practical applications, with ordinary cable connectors offering limited protection. Even with protective structures like sealing caps, dust and water can still enter the gaps during use, causing cable failures. Furthermore, these connectors often cannot be cleaned without disassembly, requiring regular disassembly and cleaning, which not only interrupts operations but may also shorten the connector's lifespan due to frequent disassembly. Therefore, an arc-resistant photovoltaic cable connector structure with self-testing functionality is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an arc-resistant photovoltaic cable connector structure with a self-testing function, solving the problem of limited protection capabilities of ordinary cable connectors. Even though some products are protected by structures such as sealing covers, dust and water can still enter the gap during actual use, causing cable failure. Most of these connectors cannot be cleaned without disassembly. Once a problem occurs, personnel need to disassemble and clean them regularly, which not only interrupts work but may also reduce the lifespan of the connector due to frequent disassembly.

[0005] To solve the above technical problems, this utility model provides the following technical solution: a self-testing arc-resistant photovoltaic cable connector structure, including a connecting sleeve, a limiting sleeve fixedly connected to one end of the inner side of the connecting sleeve, a threaded bolt threadedly connected to a limiting hole opened on the outer wall of the inner side of the limiting sleeve, a clamp threadedly connected to the outer wall of the threaded bolt, a fixing frame hinged to the outer wall of the clamp, a sliding sleeve fixedly connected to the inner side of the fixing frame, side plates fixedly connected to the front and rear ends of the connecting sleeve, a limiting slider slidably connected to the inner wall of a limiting groove opened on the outer wall of the side plate, a threaded rod threadedly connected to the inner wall of the limiting slider, and a threaded block threadedly connected to the outer wall of the threaded rod. A hinge frame is fixedly connected to the inner wall of the lower section of the side plate. A hinge block is hinged to the inner wall of the hinge frame. A hinge clamping block is hinged to the bottom of the hinge block. A connecting rod is fixedly connected to the outer end of the hinge clamping block. A limit sleeve is fixedly connected to the bottom right side of the hinge frame. A clamping sleeve is fixedly connected to the outer end of the connecting rod. A sliding rod is slidably connected to a limit groove opened on the inner wall of the side plate. A connecting spring is sleeved on the outer wall of the sliding rod. A stop block is slidably connected to the outer wall of the inner side of the sliding rod. A fixing block is fixedly connected to one end of the back of the stop block. A push block is fixedly connected to one end of the front of the stop block. A limit stop sleeve is fixedly connected to the inner side of the other side of the connecting clamping sleeve. A connecting stop sleeve is slidably connected to the inner wall of the limit stop sleeve.

[0006] A further improvement is that the connecting sleeve, side plate, and hinge frame are symmetrically arranged on the left and right sides; the hinge frame is fixedly connected to the inner wall of the lower section of the side plate, and a hinge block is hinged to the inner wall of the hinge frame, and a hinge clamping block is hinged to the bottom of the hinge block; when it is necessary to further clamp and fix the cable, the hinge clamping block is moved by external operation.

[0007] A further improvement is that the fixing frame, clamp, and threaded bolt are circumferentially arranged on the outer wall of the sliding sleeve; by rotating the threaded bolt, since the threaded bolt is threadedly connected to the limiting hole opened on the inner outer wall of the limiting sleeve, and its outer wall is threadedly connected to the clamp, the clamp will move along the axial direction of the threaded bolt as the threaded bolt rotates; since the fixing frame is hinged to the outer wall of the clamp, and the sliding sleeve is fixedly connected to the fixing frame, the movement of the clamp will drive the fixing frame and the sliding sleeve to move together.

[0008] A further improvement is that the clamp is connected to the annular groove opened on the outer wall of the limiting sleeve, and the inner side of the sliding sleeve abuts against one end of the inner side of the connecting sleeve; the clamp finally clamps the annular groove opened on the outer wall of the limiting sleeve to fix the limiting sleeve, while the inner side of the sliding sleeve abuts against one end of the inner side of the connecting sleeve to complete the initial fixation and positioning of one end of the cable.

[0009] A further improvement is that the connecting rod is slidably connected to the inner wall of the limiting sleeve; when it is necessary to further clamp and fix the cable, the hinged clamping block is moved by external operation; the outer end of the hinged clamping block is fixedly connected to a connecting rod, which is slidably connected to the inner wall of the limiting sleeve, and the limiting sleeve is fixedly connected to the bottom right side of the hinge frame; as the hinged clamping block moves, the connecting rod will slide inside the limiting sleeve, thereby driving the clamping sleeve to move.

[0010] A further improvement is that the upper and lower ends of the clamp are connected by bolts for limiting; as the hinged clamping block moves, the connecting rod will slide in the limiting sleeve, thereby driving the clamp to move; the upper and lower ends of the clamp are connected by bolts for limiting, and the clamping degree of the clamp can be adjusted according to actual needs, so as to fix the cable more securely.

[0011] A further improvement is that the abutment block is slidably connected to the limiting groove opened inside the limiting slider, and the push block is slidably connected to the inner wall of the limiting slide opening opened on the front of the side plate. When the system needs to perform a self-test, the relevant components are activated by internal circuit control or external commands, such as applying a certain force to the fixing block. After the fixing block is subjected to force, it drives the abutment block to slide in the limiting groove inside the limiting slider, thereby pushing the push block to slide on the inner wall of the limiting slide opening on the front of the side plate. The sliding of the push block will trigger the corresponding detection element, such as a micro switch, and transmit the detection signal to the control system.

[0012] By employing the above technical solution, this utility model provides an arc-resistant photovoltaic cable joint structure with self-testing function, which has at least the following beneficial effects:

[0013] 1. This utility model uses a connecting sleeve, a limiting sleeve, a sliding sleeve, and other components in cooperation. The clamping frame, driven by threaded bolts, holds the limiting sleeve, and the sliding sleeve abuts against the connecting sleeve, completing the initial fixation from the inside. The limiting slider and threaded rod on the side plate drive the relevant components to adjust their positions. The hinge frame and hinge clamping block drive the clamping sleeve to further clamp the cable through the connecting rod. The multi-directional and multi-layered fixing method ensures the stability of the cable connection and effectively reduces the DC arcing phenomenon caused by loose connection. The close cooperation and reasonable layout of each component improves the arc resistance of the overall structure, reduces the risk of safety accidents caused by arcing, and ensures the safe operation of the photovoltaic system.

[0014] 2. During system operation, this utility model can promptly determine whether there are any abnormalities such as loose connections in the connector by sliding the push block to trigger the detection element, providing accurate early warning for maintenance personnel and facilitating timely troubleshooting. Compared with traditional connectors, this structure design allows for the inspection and adjustment of some components without frequent disassembly, reducing work interruptions and component wear caused by disassembly, lowering maintenance costs, and improving the operation and maintenance efficiency of the photovoltaic system. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial structural diagram of the connecting sleeve of this utility model;

[0019] Figure 3 This is a schematic diagram of a partial structure of the limiting sleeve of this utility model;

[0020] Figure 4 This is a partial structural diagram of the hinge block of this utility model;

[0021] Figure 5 This is a partial structural diagram of the abutment part of this utility model.

[0022] In the diagram: 1. Connecting sleeve; 2. Limiting sleeve; 3. Sliding sleeve; 4. Fixing frame; 5. Clamp; 6. Threaded bolt; 7. Side plate; 8. Limiting slider; 9. Threaded rod; 10. Threaded block; 11. Hinge frame; 12. Hinge block; 13. Hinge clamp; 14. Limiting sliding sleeve; 15. Connecting rod; 16. Sleeve; 17. Abutment; 18. Fixing block; 19. Sliding rod; 20. Connecting spring; 21. Push block; 22. Limiting abutment; 23. Connecting abutment. Detailed Implementation

[0023] 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.

[0024] Ordinary cable connectors offer limited protection. Even with protective structures like sealing caps, dust and water can still enter the gaps during actual use, causing cable malfunctions. Most of these connectors cannot be cleaned without disassembly; once a problem occurs, regular disassembly and cleaning are required, which not only interrupts work but may also shorten the connector's lifespan due to frequent disassembly. This embodiment provides an arc-resistant photovoltaic cable connector structure with a self-testing function. Please refer to [reference needed]. Figures 1-5The embodiment provides an arc-resistant photovoltaic cable connector structure with self-testing function, including a connecting sleeve 1. A limiting sleeve 2 is fixedly connected to one end of the inner side of the connecting sleeve 1. A threaded bolt 6 is threadedly connected to a limiting hole opened on the outer wall of the inner side of the limiting sleeve 2. A clamp 5 is threadedly connected to the outer wall of the threaded bolt 6. A fixing frame 4 is hinged to the outer wall of the clamp 5. A sliding sleeve 3 is fixedly connected to the inner side of the fixing frame 4. Side plates 7 are fixedly connected to the front and rear ends of the connecting sleeve 1. A limiting sliding groove is opened on the outer wall of the side plate 7. A limit slider 8 is slidably connected to the wall. A threaded rod 9 is threadedly connected to the inner wall of the limit slider 8. A threaded block 10 is threadedly connected to the outer wall of the threaded rod 9. A hinge frame 11 is fixedly connected to the inner wall of the lower section of the side plate 7. A hinge block 12 is hinged to the inner wall of the hinge frame 11. A hinge clamp 13 is hinged to the bottom of the hinge block 12. A connecting rod 15 is fixedly connected to the outer end of the hinge clamp 13. A limit sleeve 14 is fixedly connected to the bottom right side of the hinge frame 11. A clamp 16 is fixedly connected to the outer end of the connecting rod 15. A sliding rod 19 is slidably connected to a limiting groove on the inner wall of plate 7. A connecting spring 20 is sleeved on the outer wall of sliding rod 19. A stop block 17 is slidably connected to the inner side of the outer wall of sliding rod 19. A fixing block 18 is fixedly connected to one end of the back of stop block 17, and a push block 21 is fixedly connected to one end of the front of stop block 17. A limiting stop sleeve 22 is fixedly connected to the inner side of the other side of connecting sleeve 1. A connecting stop sleeve 23 is slidably connected to the inner wall of limiting stop sleeve 22. Connecting sleeve 1, side plate 7 and hinge frame 11 are symmetrically arranged. On the left and right sides; the fixing frame 4, the clamp 5 and the threaded bolt 6 are circumferentially arranged on the outer wall of the sliding sleeve 3; the clamp 5 clamps and connects to the annular groove opened on the outer wall of the limiting sleeve 22, and the inner side of the sliding sleeve 3 abuts against one end of the inner side of the connecting sleeve 23; the connecting rod 15 is slidably connected to the inner wall of the limiting sliding sleeve 14; the upper and lower ends of the clamp 16 are limited and connected by bolts; the abutment 17 is slidably connected to the limiting groove opened on the inner side of the limiting slider 8, and the push block 21 is slidably connected to the inner wall of the limiting sliding opening opened on the front of the side plate 7.

[0025] Working principle: When connecting cables, firstly, the two photovoltaic cables to be connected are respectively inserted into the symmetrically arranged connecting sleeves 1 on the left and right sides; the limiting sleeve 2 fixedly connected to one end of the inner side of the connecting sleeve 1 can play a preliminary positioning role for the cables; then, by rotating the threaded bolt 6, since the threaded bolt 6 is threadedly connected to the limiting hole opened on the inner outer wall of the limiting sleeve 2, and its outer wall is threadedly connected to the clamp 5, as the threaded bolt 6 rotates, the clamp 5 will move along the axial direction of the threaded bolt 6; and because the outer wall of the clamp 5 is hinged... A fixed frame 4 is connected to a sliding sleeve 3. Therefore, the movement of the clamp 5 will cause the fixed frame 4 and the sliding sleeve 3 to move together. The clamp 5 finally clamps and connects to the annular groove opened on the outer wall of the limiting sleeve 22, thereby fixing the limiting sleeve 22. The inner side of the sliding sleeve 3 abuts against one end of the inner side of the connecting sleeve 23, completing the initial fixing and positioning of one end of the cable. Here, the fixed frame 4, the clamp 5 and the threaded bolt 6 are circumferentially arranged on the outer wall of the sliding sleeve 3, which can stably fix the sliding sleeve 3 and the components connected to it from multiple directions.

[0026] In the process of further fixing the cable, the side plate 7 plays a key role; the side plate 7 is fixedly connected to the front and rear ends of the connecting sleeve 1, and the inner wall of the limiting groove opened on its outer wall is slidably connected to the limiting slider 8; when the threaded rod 9 is rotated, since the outer wall of the threaded rod 9 is threadedly connected to the threaded block 10, and the threaded rod 9 is threadedly connected to the inner wall of the limiting slider 8, as the threaded rod 9 rotates, the threaded block 10 will move relative to the threaded rod 9, and at the same time drive the limiting slider 8 to slide in the limiting groove; the movement of the limiting slider 8 will further adjust the position of the related components;

[0027] A hinged frame 11 is fixedly connected to the inner wall of the lower section of the side plate 7. A hinged block 12 is hinged to the inner wall of the hinged frame 11, and a hinged clamping block 13 is hinged to the bottom of the hinged block 12. When it is necessary to further clamp and fix the cable, the hinged clamping block 13 is moved by external operation. A connecting rod 15 is fixedly connected to the outer end of the hinged clamping block 13. The connecting rod 15 is slidably connected to the inner wall of the limiting sleeve 14. The limiting sleeve 14 is fixedly connected to the bottom right side of the hinged frame 11. As the hinged clamping block 13 moves, the connecting rod 15 will slide in the limiting sleeve 14, thereby driving the clamping sleeve 16 to move. The upper and lower ends of the clamping sleeve 16 are limited by bolts. The clamping degree of the clamping sleeve 16 can be adjusted according to actual needs, so as to fix the cable more firmly.

[0028] After the cable connection is completed, to achieve the self-test function, the sliding rod 19, which is slidably connected by the limiting groove on the inner wall of the side plate 7, plays its role; a connecting spring 20 is sleeved on the outer wall of the sliding rod 19, and a stop block 17 is slidably connected to the outer wall of the inner side of the sliding rod 19. A fixing block 18 is fixedly connected to one end of the back of the stop block 17, and a push block 21 is fixedly connected to one end of the front; the stop block 17 is slidably connected to the limiting groove on the inner side of the limiting slider 8, and the push block 21 is slidably connected to the inner wall of the limiting slide opening on the front of the side plate 7; under normal working conditions, the connecting spring 20 is in a certain compressed or stretched state to maintain the relative position of each component; when the system When self-testing is required, the relevant components are activated by internal circuit control or external commands, such as applying a certain force to the fixing block 18. After being subjected to force, the fixing block 18 drives the abutment block 17 to slide in the limiting groove inside the limiting slider 8, which in turn pushes the push block 21 to slide on the inner wall of the limiting sliding opening on the front of the side plate 7. The sliding of the push block 21 will trigger the corresponding detection element, such as a micro switch, and transmit the detection signal to the control system. The control system determines whether there is any abnormality in the cable joint, such as whether the connection is loose, based on the received signal. If an abnormality is detected, an alarm can be issued in time to remind maintenance personnel to check and repair.

[0029] The limiting sleeve 22, which is fixedly connected to the inner side of the connecting sleeve 1, and the connecting sleeve 23, which is slidably connected to the inner wall of the limiting sleeve 22, play the role of connecting the two cables in the whole structure to achieve stable power transmission. At the same time, they work together with other components to ensure that the cable joint is firmly connected and has good arc resistance, effectively preventing safety problems caused by electric arc and ensuring the stable operation of the photovoltaic system.

[0030] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] 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 self-testing arc-resistant photovoltaic cable connector structure, comprising a connecting sleeve (1), characterized in that: One end of the connecting sleeve (1) is fixedly connected to a limiting sleeve (2). A threaded bolt (6) is threaded into a limiting hole on the outer wall of the inner side of the limiting sleeve (2). A clamp (5) is threaded into the outer wall of the threaded bolt (6). A fixing frame (4) is hinged to the outer wall of the clamp (5). A sliding sleeve (3) is fixedly connected to the inner side of the fixing frame (4). A side plate (7) is fixedly connected to the front and rear ends of the connecting sleeve (1). A limiting slider (8) is slidably connected to the inner wall of a limiting groove on the outer wall of the side plate (7). A threaded rod (9) is threaded into the inner wall of the limiting slider (8). A threaded block (10) is threaded into the outer wall of the threaded rod (9). A hinge frame (11) is fixedly connected to the inner wall of the lower section of the side plate (7). A hinge block (12) is hinged into the inner wall of the hinge frame (11). A hinged clamping block (13) is hinged to the bottom of the block (12). A connecting rod (15) is fixedly connected to the outer end of the hinged clamping block (13). A limiting sliding sleeve (14) is fixedly connected to the bottom right side of the hinge frame (11). A clamping sleeve (16) is fixedly connected to the outer end of the connecting rod (15). A sliding rod (19) is slidably connected to the limiting sliding groove opened on the inner wall of the side plate (7). A connecting spring (20) is sleeved on the outer wall of the sliding rod (19). A stop block (17) is slidably connected to the outer wall of the inner side of the sliding rod (19). A fixing block (18) is fixedly connected to one end of the back of the stop block (17). A push block (21) is fixedly connected to one end of the front of the stop block (17). A limiting stop sleeve (22) is fixedly connected to the inner side of the other side of the connecting clamping sleeve (1). A connecting stop sleeve (23) is slidably connected to the inner wall of the limiting stop sleeve (22).

2. The arc-resistant photovoltaic cable joint structure with self-testing function according to claim 1, characterized in that: The connecting sleeve (1), side plate (7) and hinge frame (11) are symmetrically arranged on the left and right sides.

3. The arc-resistant photovoltaic cable joint structure with self-testing function according to claim 1, characterized in that: The fixing frame (4), clamp (5) and threaded bolt (6) are circumferentially arranged on the outer wall of the sliding sleeve (3).

4. The arc-resistant photovoltaic cable joint structure with self-testing function according to claim 1, characterized in that: The clamp (5) clamps and connects to the annular groove opened on the outer wall of the limiting sleeve (22), and the inner side of the sliding sleeve (3) abuts against one end of the inner side of the connecting sleeve (23).

5. The arc-resistant photovoltaic cable joint structure with self-testing function according to claim 1, characterized in that: The connecting rod (15) is slidably connected to the inner wall of the limiting sleeve (14).

6. The arc-resistant photovoltaic cable joint structure with self-testing function according to claim 1, characterized in that: The upper and lower ends of the sleeve (16) are connected by bolts.

7. The arc-resistant photovoltaic cable joint structure with self-testing function according to claim 1, characterized in that: The abutment block (17) is slidably connected to the limiting groove opened inside the limiting slider (8), and the push block (21) is slidably connected to the inner wall of the limiting slide opening opened on the front of the side plate (7).

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