Photovoltaic dedicated DC cable

Abstract

The utility model belongs to the technical field of photovoltaic cables, and particularly relates to a photovoltaic special-purpose DC cable comprising a cable installed in a photovoltaic system in an overhead laying mode; a limiting sleeve is arranged on the outer side of the cable and used for blocking the adverse effect of the external environment, an arc-shaped pad for clamping the cable to form supporting and positioning is arranged on the inner side of the limiting sleeve, and a buffer column for buffering external force to prevent the cable from being directly influenced is arranged on the outer side of the arc-shaped pad. The upper end of the limiting sleeve is provided with a pull rope which replaces a cable to bear the pulling acting force during overhead laying, and the upper end of the limiting sleeve is provided with a boss. According to the utility model, the photovoltaic cable can be effectively prevented from being affected by the external environment during overhead laying, the photovoltaic cable can be kept in a stable use state, and the pull rope is used for replacing and bearing the pulling acting force, so that the stability of the cable structure is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic cables, and particularly relates to a direct current cable dedicated to photovoltaics. Background Art

[0002] Photovoltaic cables, also known as solar cables, are cables specially designed to connect solar panels, inverters and other photovoltaic system components. As a representative of clean energy, the sustainable development of solar photovoltaic systems cannot be separated from the support of photovoltaic cables, which can not only improve the energy conversion efficiency of the system, but also reduce energy waste and environmental pollution, and promote the widespread application and popularization of clean energy.

[0003] At present, since photovoltaic power plants are mostly laid outdoors, existing photovoltaic cables are often installed overhead when in use. However, overhead cables are easily affected by the external environment (such as wind, rain, lightning, etc.), and are prone to failure, resulting in poor reliability of the cables, which is not conducive to long-term stable use.

[0004] In order to solve the above problems, this application proposes a photovoltaic dedicated DC cable. Utility Model Content

[0005] The purpose of the utility model is to provide a photovoltaic-specific DC cable, which solves the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a photovoltaic-specific DC cable, comprising: a cable installed in a photovoltaic system by means of overhead laying; a limiting sleeve is arranged on the outer side of the cable to block the adverse effects of the external environment, an arc pad is arranged on the inner side of the limiting sleeve to clamp the cable to form support and positioning, a buffer column is arranged on the outer side of the arc pad to buffer external forces to prevent direct impact on the cable; a pull rope is arranged on the upper end of the limiting sleeve to replace the cable in bearing the pulling force during overhead laying, and a boss is arranged on the upper end of the limiting sleeve.

[0008] Furthermore, a first protrusion is provided at one end of the opening of the limiting sleeve, and a second protrusion is provided at the other end of the opening of the limiting sleeve. The first protrusion is connected to the pull rope to close the limiting sleeve to form a sheath-type protection for the cable.

[0009] Furthermore, a protruding first plug is provided on one side of the second protrusion, and the first plug is engaged in the groove of the draw cord after being squeezed, and a cavity is provided inside the first plug.

[0010] Furthermore, a second plug block having the same structure as the first plug block is arranged on the outer side of the arc-shaped pad, and a clamping seat to which the second plug block is snap-engaged is arranged on the inner side of the limiting sleeve.

[0011] Furthermore, an arcuate belt is arranged on the outer side of the boss, and a protruding positioning belt is arranged on the outer side of the arcuate belt.

[0012] Furthermore, a positioning groove for laying a draw cord is provided inside the boss.

[0013] Furthermore, a limiting protrusion is provided on the outer side of the pull rope and is engaged with the positioning belt and the arc-shaped groove inside the positioning groove.

[0014] The utility model has the following beneficial effects:

[0015] The utility model can press the cable into the interior of the limit sleeve through the arc pad to form a support, and then the first plug is inserted into the interior of the first protrusion to close the limit sleeve. After this arrangement, the cable can be protected from interference from the external environment, and the buffer column can be used to buffer the external force to prevent the overhead laying from swinging significantly, so that the cable can be kept in a stable use state;

[0016] The utility model can automatically push the arc belt outward by passing the pull rope through the interior of the positioning groove, and make the limiting protrusion engage with the interior of the positioning belt to form a limit. At this time, when the cable is laid overhead, the pull rope can be used to bear the external tensioning force, thereby avoiding the situation where the outer skin of the cable is damaged due to overhead laying, thereby extending its service life.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cable cross-section structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the structure of the connection part between the arc-shaped pad and the second plug block of the utility model;

[0022] Figure 4 This is a schematic diagram of the external structure of the limit sleeve of the utility model;

[0023] Figure 5 It is a schematic diagram of the exploded structure of the pull rope and the limit sleeve of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1, cable; 2, limiting sleeve; 3, arc pad; 4, first protrusion; 5, pull rope; 6, boss; 7, second protrusion; 8, first plug; 9, cavity; 10, second plug; 11, buffer column; 12, clamp seat; 13, arc belt; 14, positioning belt; 15, positioning groove; 16, limiting protrusion. DETAILED DESCRIPTION

[0026] 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.

[0027] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] See also Figure 1-5 As shown, the utility model is a photovoltaic-specific DC cable, comprising: a cable 1, which is installed in a photovoltaic system by overhead laying;

[0029] A limiting sleeve 2 is arranged on the outer side of the cable 1 to block the adverse effects of the external environment, an arc pad 3 is arranged on the inner side of the limiting sleeve 2 to clamp the cable 1 to form support and positioning, and a buffer column 11 is arranged on the outer side of the arc pad 3 to buffer the external force to prevent the cable 1 from being directly affected;

[0030] The upper end of the limiting sleeve 2 is provided with a pull rope 5 for replacing the cable 1 to bear the pulling force when the cable is laid overhead, and the upper end of the limiting sleeve 2 is provided with a boss 6;

[0031] The present embodiment provides an overhead cable 1 and its components in a photovoltaic system. The cable 1 can be clamped by an arc-shaped pad 3 to be wrapped inside a limiting sleeve 2 to protect it from the influence of the external environment. The cable 1 is then connected to an overhead fixing part through a through-threaded pull rope 5, which replaces the cable 1 in bearing the pulling force, thereby ensuring the stability of the cable 1 structure and extending its service life.

[0032] Among them, a first protrusion 4 is arranged at one end of the opening of the limiting sleeve 2, and a second protrusion 7 is arranged at the other end of the opening of the limiting sleeve 2. The first protrusion 4 is connected with the pull rope 5 to close the limiting sleeve 2 to form a covering protection for the cable 1. The characteristics of its rubber mechanism can also automatically form a seal to prevent rainwater from entering the interior and affecting the normal operation of the cable 1.

[0033] Among them, a protruding first plug 8 is set on one side of the second protrusion 7. After being squeezed, the first plug 8 is engaged in the groove of the pull rope 5. A cavity 9 is opened inside the first plug 8 to provide a deformation space when the first plug 8 is squeezed and retracted.

[0034] A second plug 10 having the same structure as the first plug 8 is disposed on the outer side of the arc pad 3 , and a clamping seat 12 which is snap-fitted and connected to the second plug 10 is disposed on the inner side of the limiting sleeve 2 .

[0035] An arcuate belt 13 is disposed on the outer side of the boss 6 , and a protruding positioning belt 14 is disposed on the outer side of the arcuate belt 13 . The positioning belt 14 is an arcuate structure, and the inner arcuate structure is connected to the arcuate groove inside the boss 6 .

[0036] A positioning groove 15 for laying the pull rope 5 is formed inside the boss 6 .

[0037] The outer side of the pull rope 5 is provided with a limiting protrusion 16 which is engaged with the positioning belt 14 and the arc-shaped groove inside the positioning groove 15 .

[0038] It can be understood that the utility model can effectively prevent the photovoltaic cable 1 from being adversely affected by the external environment when it is laid overhead, so that it can maintain a stable use state, and the pull rope 5 is used to bear the pulling force to ensure the stability of the cable 1 structure and increase its service life.

[0039] A specific application of the operating process of this embodiment is as follows: when in use, first press the cable 1 into the inside of the limiting sleeve 2, and use the evenly distributed arc pads 3 to automatically clamp and position the cable 1, then insert the first plug 8 into the inside of the first protrusion 4 to close the opening of the limiting sleeve 2, so that the cable 1 can be protected from the adverse effects of the external environment, and the buffer column 11 forms a buffer for the force generated by the external environment to prevent direct action on the cable 1 and protect its stable use state; further, inserting the pull rope 5 into the inside of the positioning groove 15 can automatically push the arc belt 13 outward through the limiting protrusion 16, and make the limiting protrusion 16 automatically engage with the inside of the positioning belt 14 to form a limit, so that the pull rope 5 can replace the cable 1 to bear the tensioning force brought by the overhead laying method, so as to avoid the external pulling force from affecting the structure of the cable 1 and protect its stable use effect.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A photovoltaic DC cable, characterized in that: include: A cable (1) is installed in the photovoltaic system by overhead laying; A limiting sleeve (2) is arranged on the outer side of the cable (1) to block the adverse effects of the external environment, an arc-shaped pad (3) is arranged on the inner side of the limiting sleeve (2) to clamp the cable (1) to form support and positioning, and a buffer column (11) is arranged on the outer side of the arc-shaped pad (3) to buffer external forces to prevent direct impact on the cable (1); The upper end of the limiting sleeve (2) is provided with a pull rope (5) for replacing the cable (1) to withstand the pulling force during overhead laying, and the upper end of the limiting sleeve (2) is provided with a boss (6).

2. A photovoltaic dedicated DC cable according to claim 1, characterized in that: A first protrusion (4) is provided at one end of the opening of the limiting sleeve (2), and a second protrusion (7) is provided at the other end of the opening of the limiting sleeve (2). The first protrusion (4) is connected to the pull rope (5) to close the limiting sleeve (2) to form a sheath-type protection for the cable (1).

3. A photovoltaic dedicated DC cable according to claim 2, characterized in that: A protruding first plug (8) is provided on one side of the second protruding block (7). The first plug (8) is clamped into the groove of the draw cord (5) after being squeezed, and a cavity (9) is provided inside the first plug (8).

4. A photovoltaic dedicated DC cable according to claim 1, characterized in that: A second plug (10) having the same structure as the first plug (8) is arranged on the outer side of the arc pad (3), and a clamping seat (12) for snap-fitting connection with the second plug (10) is arranged on the inner side of the limiting sleeve (2).

5. A photovoltaic dedicated DC cable according to claim 1, characterized in that: An arcuate belt (13) is arranged on the outer side of the boss (6), and a protruding positioning belt (14) is arranged on the outer side of the arcuate belt (13).

6. A photovoltaic dedicated DC cable according to claim 1, characterized in that: A positioning groove (15) for laying the draw cord (5) is provided inside the boss (6).

7. A photovoltaic dedicated DC cable according to claim 1, characterized in that: The outer side of the pull rope (5) is provided with a limiting protrusion (16) which is engaged with the positioning belt (14) and the arc-shaped groove inside the positioning groove (15).

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