Waterproof photovoltaic cable with multi-layer insulating flame-retardant protective sleeve structure

Abstract

The utility model relates to the technical field of cables, in particular to a waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sleeve structure, which comprises a wire core and a flame-retardant layer. The exterior of the wire core is sleeved with the flame-retardant layer, the stabilizing layer is fixedly installed on the outer wall of the flame-retardant layer, and the outer walls of the flame-retardant layer and the stabilizing layer are sleeved with the insulating layer. The waterproof layer sleeves the outer wall of the insulating layer, and the wear-resistant layer is arranged on the outer wall of the waterproof layer; the first clamping frame and the second clamping frame are connected to the outer wall of the wear-resistant layer in a sleeving mode, and sliding grooves are formed in the inner wall of the first clamping frame and the inner wall of the second clamping frame; by improving the waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sleeve structure, the waterproof photovoltaic cable has the advantages of reasonable structural design, stable interior of the cable and convenience in clamping by a clamping frame, so that the problems and defects in the prior art and equipment are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, and more specifically, to a waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sheath structure. Background Technology

[0002] A cable is an electrical or signal transmission device, typically composed of several or groups of conductors, and characterized by internal current conduction and external insulation. Cables can be used to transmit electrical (magnetic) energy and information, realizing the conversion of electromagnetic energy. They are widely used in urban underground power grids, power plant lead-out lines, internal power supply in industrial and mining enterprises, and underwater power transmission lines across rivers and seas. There are many types of cables, including power cables, control cables, compensating cables, shielded cables, and high-temperature cables. They consist of single or multiple conductors and insulation layers, used to connect circuits and electrical appliances.

[0003] The existing patent with patent number CN 216772901 U discloses a cable with a cable protection sleeve, which solves the problem that the flame retardant effect of traditional cable protection sleeves is generally poor and the risk factor is high when the cable is short-circuited or catches fire at high temperature. However, the clip needs to be inserted from the end of the cable when in use, which is not convenient to install at any part of the cable. Moreover, the core wire has little contact with the flame retardant layer and may be unstable within the flame retardant layer.

[0004] In view of this, we have studied and improved upon the existing problems to provide a waterproof photovoltaic cable with a multi-layered insulating flame-retardant protective sheath structure. The aim of this technology is to solve the problems and improve its practical value. Utility Model Content

[0005] The purpose of this invention is to provide a waterproof photovoltaic cable with a multi-layered insulating flame-retardant protective sheath structure to solve the problems and deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a waterproof photovoltaic cable with a multi-layered insulating flame-retardant protective sheath structure, achieved through the following specific technical means:

[0007] A waterproof photovoltaic cable with a multi-layered insulating and flame-retardant protective sheath structure includes: a conductor, a flame-retardant layer, a stabilizing layer, an insulating layer, a waterproof layer, a wear-resistant layer, a first clamping frame, a second clamping frame, a sliding groove, a pressure plate, a slider, a mounting cover, a sliding hole, a sliding sleeve, a locking block, a sliding shaft, a sliding key, a locking hole, a spring, a receiving groove, a fixing block, a knob, and a screw. The conductor is covered by a flame-retardant layer, and the stabilizing layer is fixedly installed on the outer wall of the flame-retardant layer. The insulating layer is fitted onto the outer walls of both the flame-retardant and stabilizing layers. The waterproof layer is fitted onto the outer wall of the insulating layer, and the wear-resistant layer is located on the outer wall of the waterproof layer. The first and second clamping frames are respectively fitted onto the outer wall of the wear-resistant layer, and sliding grooves are provided on the inner walls of both the first and second clamping frames. Slider blocks are provided on both sides of the pressure plate, and the pressure plate is slidably inserted into the inner walls of the first and second clamping frames via a clearance fit. The sliders are slidably inserted into the inner walls of the sliding grooves via a clearance fit. The mounting cover is connected to the first clamping frame via a rotating shaft. A first card frame is connected to a second card frame, and a sliding hole is provided on the outer wall of the mounting cover, with a sliding sleeve on the inner wall of the sliding hole; a sliding shaft is bolted to the outer wall of the locking block, and the locking block is slidably inserted into the inner wall of the sliding hole through a clearance fit, and the sliding shaft is slidably inserted into the inner wall of the sliding sleeve through a clearance fit; a sliding key is bolted to the top of the sliding shaft; a locking hole is provided at the top of the first and second card frames, and the locking hole engages with the locking block; a spring is installed inside the sliding hole, and the spring is sleeved and connected to the outer wall of the sliding sleeve and the sliding shaft, with both ends of the spring abutting against the inner wall of the sliding hole and the locking block; a receiving groove is provided on the outer wall of the first card frame, and a fixing block is provided on the outer wall of the second card frame; the fixing block is inserted into the inner wall of the receiving groove, and the first card frame and the fixing block are fixedly connected by bolts; a knob is inserted into a screw, and the screw is connected to the mounting cover through threaded rotation, with the mounting cover abutting against the top of the pressure plate.

[0008] As a further optimization of this technical solution, the lower end of the pressure plate of the waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sleeve structure is an arc-shaped structure, and the pressure plate is slidably connected to the inner walls of the first and second card frames by a plug-in method.

[0009] As a further optimization of this technical solution, the waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sleeve structure of this utility model has a threaded hole on the outer wall of the mounting cover for mating with a screw.

[0010] As a further optimization of this technical solution, the lower end of the locking block of the waterproof photovoltaic cable with a multi-layer insulation and flame-retardant protective sheath structure of this utility model is provided with a sloping protrusion, and the inside of the locking hole is provided with a groove for accommodating the sloping protrusion.

[0011] As a further optimization of this technical solution, the sliding shaft of the waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sleeve structure is slidably connected to the inner wall of the sleeve by a plug-in method.

[0012] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0013] 1. The lower end of the pressure plate of this utility model has an arc-shaped structure, and the pressure plate is slidably connected to the inner wall of the first and second card frames by plugging in, which increases the contact area between the pressure plate and the wear-resistant layer. Under the condition of firm clamping, the wear-resistant layer is not easily deformed, thus improving the service life.

[0014] 2. The outer wall of the mounting cover of this utility model is provided with a threaded hole for cooperating with the screw. Turning the knob can make the screw press against the pressure plate, which can press the wear-resistant layer and achieve the purpose of fixing the wear-resistant layer.

[0015] 3. The lower end of the locking block of this utility model is provided with a beveled protrusion, and the inside of the lock hole is provided with a groove for accommodating the beveled protrusion; the sliding shaft is slidably connected to the inner wall of the sliding sleeve by a plug-in method, which facilitates fixing and opening the mounting cover, allows the pressure plate to be easily removed, and facilitates the installation of the first and second card frames in the middle part of the wear-resistant layer.

[0016] 4. This utility model improves the waterproof photovoltaic cable with a multi-layer insulation and flame-retardant protective sheath structure, which has the advantages of reasonable structural design, stable internal cable, and easy clamping with a clamping frame, thus effectively solving the problems and shortcomings in the existing technology and equipment. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 4 This is a partially enlarged structural schematic diagram of the present invention;

[0022] Figure 5 This is a partial structural schematic diagram of the present invention.

[0023] Figure 6This is a partial structural schematic diagram of the present invention;

[0024] Figure 7 This is a cross-sectional structural diagram of the present invention.

[0025] In the diagram: 1. Core wire; 2. Flame retardant layer; 3. Stabilizing layer; 4. Insulating layer; 5. Waterproof layer; 6. Wear-resistant layer; 7. First clip frame; 701. Second clip frame; 8. Slide groove; 9. Pressure plate; 10. Slider; 11. Mounting cover; 12. Slide hole; 13. Slide sleeve; 14. Locking block; 15. Slide shaft; 16. Slide key; 17. Locking hole; 18. Spring; 19. Receiving groove; 20. Fixing block; 21. Knob; 22. Screw. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figures 1 to 7 This utility model provides a specific technical implementation scheme for a waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sheath structure:

[0028] A waterproof photovoltaic cable with a multi-layered insulating and flame-retardant protective sheath structure includes: a conductor 1, a flame-retardant layer 2, a stabilizing layer 3, an insulating layer 4, a waterproof layer 5, a wear-resistant layer 6, a first clamping frame 7, a second clamping frame 701, a sliding groove 8, a pressure plate 9, a slider 10, a mounting cover 11, a sliding hole 12, a sliding sleeve 13, a locking block 14, a sliding shaft 15, a sliding key 16, a locking hole 17, a spring 18, a receiving groove 19, a fixing block 20, a knob 21, and a screw 22; the conductor 1 is covered with a flame-retardant layer 2, and the stabilizing layer 3 is fixedly installed on the outer wall of the flame-retardant layer 2, and the insulating layer 4 is fitted on the outer walls of the flame-retardant layer 2 and the stabilizing layer 3; the waterproof layer 5 is fitted on the outer wall of the insulating layer 4, and the wear-resistant layer 6 is located on the outer wall of the waterproof layer 5. On the wall; the first card frame 7 and the second card frame 701 are respectively sleeved and connected to the outer wall of the wear-resistant layer 6, and the inner walls of the first card frame 7 and the second card frame 701 are both provided with sliding grooves 8; the pressure plate 9 is provided with sliders 10 on both sides, and the pressure plate 9 is inserted and connected to the inner walls of the first card frame 7 and the second card frame 701 by a clearance fit sliding method, and the sliders 10 are inserted and connected to the inner walls of the sliding grooves 8 by a clearance fit sliding method; the lower end of the pressure plate 9 has an arc-shaped structure, and the setting of the pressure plate 9 being slidably connected to the inner walls of the first card frame 7 and the second card frame 701 by an insertion method increases the contact area between the pressure plate 9 and the wear-resistant layer 6, so that the wear-resistant layer 6 is not easily deformed when firmly clamped, thus improving its service life.

[0029] The mounting cover 11 is connected to the first card frame 7 and the second card frame 701 via a rotating shaft. The outer wall of the mounting cover 11 is provided with a sliding hole 12, and the inner wall of the sliding hole 12 is provided with a sliding sleeve 13. The outer wall of the mounting cover 11 is provided with a threaded hole for cooperating with the screw 22. Turning the knob 21 can make the screw 22 press against the pressure plate 9, which can press the wear-resistant layer 6 to achieve the purpose of fixing the wear-resistant layer 6.

[0030] A sliding shaft 15 is bolted to the outer wall of the locking block 14, and the locking block 14 is slidably connected to the inner wall of the sliding hole 12 through clearance fit, and the sliding shaft 15 is slidably connected to the inner wall of the sliding sleeve 13 through clearance fit; the lower end of the locking block 14 is provided with a beveled protrusion, and the inside of the locking hole 17 is provided with a groove for accommodating the beveled protrusion; the sliding shaft 15 is slidably connected to the inner wall of the sliding sleeve 13 through insertion, which facilitates fixing and opening the mounting cover 11, allowing the pressure plate 9 to be easily removed, and facilitating the installation of the first card frame 7 and the second card frame 701 in the middle part of the wear-resistant layer 6.

[0031] A sliding key 16 is bolted to the top of the sliding shaft 15; the top of the first locking frame 7 and the second locking frame 701 are provided with locking holes 17, and the locking holes 17 are engaged with the locking block 14; the spring 18 is installed inside the sliding hole 12, and the spring 18 is sleeved and connected to the outer wall of the sliding sleeve 13 and the sliding shaft 15, and the two ends of the spring 18 abut against the inner wall of the sliding hole 12 and the locking block 14; the outer wall of the first locking frame 7 is provided with a receiving groove 19, and the outer wall of the second locking frame 701 is provided with a fixing block 20; the fixing block 20 is inserted and connected to the inner wall of the receiving groove 19, and the first locking frame 7 and the fixing block 20 are fixedly connected by bolts; the knob 21 is inserted and connected to the screw 22, and the screw 22 is connected to the mounting cover 11 by threaded rotation, and the mounting cover 11 abuts against the top of the pressure plate 9.

[0032] Specific implementation steps:

[0033] Locate the part of the wear-resistant layer 6 that needs to be clamped, put the first clamping frame 7 and the second clamping frame 701 on the outer wall of the wear-resistant layer 6, align the slider 10 with the slide groove 8, put the pressure plate 9 into the inside of the first clamping frame 7 and the second clamping frame 701, fasten the mounting cover 11 to the upper end of the first clamping frame 7 and the second clamping frame 701, and engage the locking block 14 with the locking hole 17 to fix the mounting cover 11. Turning the knob 21 will cause the screw 22 to press against the pressure plate 9, which can press the wear-resistant layer 6 to achieve the purpose of fixing the wear-resistant layer 6. Insert the fixing block 20 into the receiving groove 19 and fix the first clamping frame 7 and the fixing block 20 with bolts.

[0034] In summary, this waterproof photovoltaic cable with a multi-layered insulating and flame-retardant protective sheath structure features an arc-shaped lower end of the pressure plate, which is slidably connected to the inner walls of the first and second clamping frames via an insertion method. This increases the contact area between the pressure plate and the wear-resistant layer, preventing deformation of the wear-resistant layer and extending its service life when firmly clamped. The outer wall of the mounting cover has threaded holes for engaging a screw; turning the knob allows the screw to press against the pressure plate, securing the wear-resistant layer. The lower end of the locking block has a beveled protrusion, and the interior of the locking hole has a groove to accommodate this protrusion. The sliding shaft is slidably connected to the inner wall of the sliding sleeve via an insertion method, facilitating the fixing and opening of the mounting cover and allowing for easy removal of the pressure plate. This facilitates the installation of the first and second clamping frames in the middle of the wear-resistant layer. This improvement to the waterproof photovoltaic cable with a multi-layered insulating and flame-retardant protective sheath structure offers advantages such as a reasonable structural design, internal cable stability, and easy clamping by clamping frames, effectively solving the problems and shortcomings of existing technologies and equipment.

[0035] 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. Waterproof photovoltaic cables with a multi-layered insulating flame-retardant protective sheath structure, including: The components are: wire core (1), flame-retardant layer (2), stabilizing layer (3), insulating layer (4), waterproof layer (5), wear-resistant layer (6), first frame (7), second frame (701), slide groove (8), pressure plate (9), slider (10), mounting cover (11), sliding hole (12), sliding sleeve (13), locking block (14), sliding shaft (15), sliding key (16), locking hole (17), spring (18), receiving groove (19), fixing block (20), knob (21), screw (22); characterized in that: the outer side of the wire core (1) is provided with a flame-retardant layer (2), and the stabilizing layer (3) is fixedly installed on the outer wall of the flame-retardant layer (2), and the insulating layer (4) is sleeved on the flame-retardant layer (2) and the stabilizing layer. (3) On the outer wall; the waterproof layer (5) is sleeved on the outer wall of the insulating layer (4), and the wear-resistant layer (6) is provided on the outer wall of the waterproof layer (5); the first card frame (7) and the second card frame (701) are respectively sleeved and connected to the outer wall of the wear-resistant layer (6), and the inner walls of the first card frame (7) and the second card frame (701) are provided with sliding grooves (8); the pressure plate (9) is provided with sliders (10) on both sides, and the pressure plate (9) is inserted and connected to the inner walls of the first card frame (7) and the second card frame (701) by a clearance fit sliding method, and the sliders (10) are inserted and connected to the inner wall of the sliding groove (8) by a clearance fit sliding method; the mounting cover (11) is connected to the first card frame (7) by a rotating shaft. The second card frame (701) is connected to the outer wall of the mounting cover (11), and a sliding hole (12) is provided on the outer wall of the sliding hole (12), and a sliding sleeve (13) is provided on the inner wall of the sliding hole (12); a sliding shaft (15) is bolted to the outer wall of the locking block (14), and the locking block (14) is inserted into the inner wall of the sliding hole (12) by a clearance fit sliding method, and the sliding shaft (15) is inserted into the inner wall of the sliding sleeve (13) by a clearance fit sliding method; a sliding key (16) is bolted to the top of the sliding shaft (15); a locking hole (17) is provided at the top of the first card frame (7) and the second card frame (701), and the locking hole (17) engages with the locking block (14); the spring (18) is installed in the sliding hole ( Inside 12), and spring (18) is sleeved and connected to the outer wall of sliding sleeve (13) and sliding shaft (15), and the two ends of spring (18) abut against the inner wall of sliding hole (12) and locking block (14); the outer wall of the first card frame (7) is provided with a receiving groove (19), and the outer wall of the second card frame (701) is provided with a fixing block (20); the fixing block (20) is inserted and connected to the inner wall of receiving groove (19), and the first card frame (7) and fixing block (20) are fixedly connected by bolts; the knob (21) is inserted and connected to screw (22), and screw (22) is connected to mounting cover (11) by threaded rotation, and mounting cover (11) abuts against the top of pressure plate (9).

2. The waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sheath structure according to claim 1, characterized in that: The lower end of the pressure plate (9) is an arc-shaped structure, and the pressure plate (9) is slidably connected to the inner walls of the first card frame (7) and the second card frame (701) by means of plug-in connection.

3. The waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sheath structure according to claim 1, characterized in that: The outer wall of the mounting cover (11) is provided with a threaded hole for engaging the screw (22).

4. The waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sheath structure according to claim 1, characterized in that: The lower end of the lock block (14) is provided with a beveled protrusion, and the interior of the lock hole (17) is provided with a groove for accommodating the beveled protrusion.

5. The waterproof photovoltaic cable with a multi-layer insulating flame-retardant protective sheath structure according to claim 1, characterized in that: The sliding shaft (15) is slidably connected to the inner wall of the sliding sleeve (13) by plugging.

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