Photovoltaic cable protection device

Abstract

The utility model relates to the technical field of photovoltaic cable protection, and discloses a photovoltaic cable protection device, which comprises a sleeve sleeved outside a photovoltaic cable, the sleeve comprises an inner pipe and an outer pipe which are matched with each other, the middle parts of the inner pipe and the outer pipe are corrugated structures which are matched with each other, the free ends of the adjacent outer pipes are respectively connected with a limiting piece, and the limiting pieces are connected with the inner pipe and the outer pipe. The inner pipe, the outer pipe and the limiting piece are respectively provided with a notch in a penetrating mode in the axial direction of the casing pipe. Compared with the prior art, the utility model has the advantages that cables can be conveniently led in through the notches, section-by-section sleeving is avoided, the adjacent outer pipes are quickly connected through the limiting pieces, and the installation efficiency is improved; the corrugated structure is convenient to bend, and the practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cable protection, in particular to a photovoltaic cable protection device. Background Art

[0002] Because DC cables in photovoltaic areas have high voltages and are exposed to wind, rain, and sunlight during use, lack of protective measures can easily lead to safety hazards such as exposed interfaces and damaged cable sheaths, which can even affect the normal operation of the photovoltaic system. Therefore, when installing DC cables in photovoltaic areas, they are usually protected by a sleeve.

[0003] Existing photovoltaic cable protection devices mostly use several sections of single-layer complete casing, which are passed through the free ends of the cables in sequence. The installation and connection are very troublesome, and sometimes bending is required according to the specific terrain during the installation process. Most casings do not have this function and need to be disconnected at the bend, which cannot provide complete protection. In addition, adjacent casings need to be heated to soften the casings to facilitate connection between adjacent casings, which reduces installation efficiency. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that several sections of complete sleeves are sleeved together, which makes installation and connection very troublesome, reduces installation efficiency, and cannot be bent, which reduces practicality.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a photovoltaic cable protection device, including a sleeve that is sleeved on the outside of the photovoltaic cable, the sleeve including an inner tube and an outer tube that cooperate with each other, the middle parts of the inner tube and the outer tube are both corrugated structures that cooperate with each other, and the free ends of adjacent outer tubes are respectively connected with limit members, and the inner tube, outer tube and limit members are respectively provided with notches along the axial direction of the sleeve.

[0008] Furthermore, the outer tube is evenly connected along the axial direction with a plurality of hollow first annular grooves, and the inner tube is relatively provided with a hollow second annular groove, the outer wall of the second annular groove slides with the inner wall of the first annular groove, and the second annular groove and the first annular groove are both disconnected from the notch. When the photovoltaic cable is stored, the inner tube is driven, and the inner tube slides with the second annular groove and the first annular groove so that the notch of the inner tube no longer cooperates with the notch of the outer tube, thereby facilitating the separation of the cable from the external environment and preventing the cable from being easily oxidized or corroded by external conditions.

[0009] Furthermore, the inner tube is respectively connected with limit bars on both sides of the free end of the second annular groove, and a support ring is provided in the second annular groove relative to the limit bars. A gap is provided between the support ring and the second annular groove. The support ring is supported by the limit bars, so that the support ring can assist in supporting the sleeve and improve the rigidity of the inner tube.

[0010] Furthermore, a sealing layer is connected to the outer wall of the inner tube near the notch, and the sealing layer abuts the inner wall of the outer tube, which facilitates sealing protection of the photovoltaic cable and reduces the probability of rainwater introduction.

[0011] Furthermore, the limiting member includes a limiting sleeve connected to one end of the outer tube, and sliders are respectively connected on both sides of the inner wall of the free end of the limiting sleeve, and guide grooves and limiting grooves are respectively provided on both sides of the outer wall of the other end of the outer tube. The guide groove and the limiting groove are both matched with the slider, and the guide groove is arranged along the axial direction of the outer tube and passes through the free end of the outer tube. The other end of the guide groove is connected to the middle part of the limiting groove, and the limiting groove is arranged perpendicular to the guide groove. First, the slider is introduced along the open end of the guide groove until the slider slides to the limiting groove and rotates, so that the slider and the limiting groove cooperate to achieve limitation. At this time, the free ends of adjacent outer tubes and the free ends of adjacent inner tubes are respectively abutted against each other.

[0012] Furthermore, the outer tube is coated with a reflective layer, which reduces light penetration and heat accumulation in the outer tube, thereby avoiding affecting the performance of the cable.

[0013] 3. Beneficial Effects

[0014] The advantages of this utility model compared with the prior art are:

[0015] When the notches on the inner tube and the outer tube are aligned, the photovoltaic cable can be introduced into the inner tube through the notch, and then the photovoltaic cable can be stored by misaligning the notches on the inner tube and the outer tube, which facilitates the connection of the photovoltaic cable and avoids the need to insert it from the ends one by one. At the same time, it also ensures that the photovoltaic cable is protected from external light and increases the oxidation rate, thereby extending the service life of the photovoltaic cable; the inner tube and the outer tube are both corrugated structures that cooperate with each other, so that the photovoltaic cable can be bent as needed during installation; the setting of the limiter facilitates the quick connection of adjacent outer tubes to avoid loosening between adjacent sleeves and reducing the protective effect of the photovoltaic cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a photovoltaic cable protection device of the present utility model.

[0017] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of A in the figure.

[0018] Figure 3This is a schematic diagram of the main cross-sectional structure of a photovoltaic cable protection device of the present invention.

[0019] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure of B.

[0020] As shown in the figure: 1. Inner tube, 2. Outer tube, 3. Notch, 4. First ring groove, 5. Second ring groove, 6. Limiting strip, 7. Support ring, 8. Sealing layer, 9. Limiting sleeve, 10. Slider, 11. Guide groove, 12. Limiting groove, 13. Reflective layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] Example 1

[0023] Combined with attachment Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A photovoltaic cable protection device includes a sleeve that is sleeved on the outside of the photovoltaic cable, the sleeve includes an inner tube 1 and an outer tube 2 that cooperate with each other, the inner tube 1 and the outer tube 2 are made of flexible materials, the middle parts of the inner tube 1 and the outer tube 2 are both corrugated structures that cooperate with each other, the outer tube 2 is evenly connected along the axial direction with a plurality of hollow first annular grooves 4, the inner tube 1 is relatively provided with a hollow second annular groove 5, the outer wall of the second annular groove 5 is slidably matched with the inner wall of the first annular groove 4, the inner tube 1 and the outer tube 2 are respectively axially connected along the axial direction of the sleeve. A notch 3 is provided through the inner tube 1, and the second annular groove 5 and the first annular groove 4 are both disconnected from the notch 3. The inner tube 1 is respectively connected with a limiting strip 6 on both sides of the free end of the second annular groove 5, and a support ring 7 is provided in the second annular groove 5 relative to the limiting strip 6, and a gap is provided between the support ring 7 and the second annular groove 5. The inner tube 1 is respectively connected with a limiting strip 6 on both sides of the free end of the second annular groove 5, and a support ring 7 is provided in the second annular groove 5 relative to the limiting strip 6, and a gap is provided between the support ring 7 and the second annular groove 5.

[0024] The notches 3 on the inner tube 1 and the outer tube 2 facilitate the introduction of cables, reduce the time required for cable segment-by-segment connection, and improve installation efficiency. The corrugated structures on the inner tube 1 and the outer tube 2 facilitate bending the sleeve according to installation requirements. The limit strips 6 and the support rings 7 provide auxiliary support for the sleeve, thereby improving the rigidity of the inner tube 1. At the same time, the gap facilitates the expansion and contraction adjustment of the inner tube 1 and the outer tube 2 through the corrugated structure.

[0025] Combined with attachment Figure 1 The outer tube 2 is coated with a reflective layer 13. The reflective layer 13 is provided to reduce light penetration, reduce heat accumulation in the outer tube 2, and avoid affecting the performance of the cable.

[0026] Example 2

[0027] Combined with attachment Figure 2 and Figure 4 The free ends of the adjacent outer tubes 2 are respectively connected with limit members, and the limit members include a limit sleeve 9 connected to one end of the outer tube 2. The inner walls of the free ends of the limit sleeves 9 are respectively connected with sliders 10. The outer walls of the other end of the outer tube 2 are respectively provided with guide grooves 11 and limit grooves 12. The guide grooves 11 and limit grooves 12 are both matched with the sliders 10. The guide grooves 11 are arranged along the axial direction of the outer tube 2 and pass through the free end of the outer tube 2. The other end of the guide groove 11 is connected to the middle of the limit groove 12, and the limit groove 12 is arranged perpendicular to the guide groove 11.

[0028] The provision of the limiting member facilitates the connection of adjacent outer tubes 2 to each other, thereby preventing adjacent sleeves from becoming loose and reducing the protective effect on the photovoltaic cable.

[0029] The specific usage is as follows:

[0030] First, align the notches 3 on the inner tube 1 and the outer tube 2, and the photovoltaic cable can be introduced into the inner tube 1 through the notch 3; when the photovoltaic cable is stored, by driving the inner tube 1, the inner tube 1 slides through the second annular groove 5 and the first annular groove 4 so that the notch 3 of the inner tube 1 no longer cooperates with the notch 3 of the outer tube 2. At this time, the notches 3 on the inner tube 1 and the outer tube 2 are misaligned, which makes it convenient to separate the cable from the external environment, avoid the cable from being easily oxidized or corroded by external conditions, and avoid the photovoltaic cable from being exposed to external light to increase the oxidation rate, thereby extending the service life of the photovoltaic cable.

[0031] The inner tube 1 and the outer tube 2 are both corrugated structures that cooperate with each other and can be bent as needed during the installation of the photovoltaic cable;

[0032] The setting of the limiter makes it easy to connect adjacent outer tubes 2 to each other, avoiding loosening between adjacent sleeves and reducing the protection effect of the photovoltaic cable. First, the slider 10 is introduced along the open end of the guide groove 11 until the slider 10 slides to the limit groove 12 and rotates, so that the slider 10 and the limit groove 12 cooperate to achieve limitation. At this time, the free ends of adjacent outer tubes 2 and the free ends of adjacent inner tubes 1 are respectively abutted against each other.

[0033] After the protective sleeve is installed, the reflective layer 13 is provided to reduce light penetration, reduce heat accumulation in the outer tube 2, and avoid affecting the performance of the cable.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

[0036] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A photovoltaic cable protection device, comprising a sleeve sleeved on the outside of the photovoltaic cable, characterized in that: The sleeve comprises an inner tube (1) and an outer tube (2) that cooperate with each other, the middle parts of the inner tube (1) and the outer tube (2) are both corrugated structures that cooperate with each other, and the free ends of adjacent outer tubes (2) are respectively connected with limiting pieces, and the inner tube (1), the outer tube (2) and the limiting piece are respectively penetrated by notches (3) along the axial direction of the sleeve.

2. A photovoltaic cable protection device according to claim 1, characterized in that: The outer tube (2) is provided with a plurality of hollow first annular grooves (4) evenly distributed along the axial direction, and the inner tube (1) is provided with a hollow second annular groove (5) opposite thereto. The outer wall of the second annular groove (5) is slidably fitted with the inner wall of the first annular groove (4), and the second annular groove (5) and the first annular groove (4) are both disconnected from the notch (3).

3. A photovoltaic cable protection device according to claim 2, characterized in that: The inner tube (1) is respectively connected to limit strips (6) on both sides of the free end of the second annular groove (5); a support ring (7) is provided in the second annular groove (5) relative to the limit strips (6); and a gap is provided between the support ring (7) and the second annular groove (5).

4. A photovoltaic cable protection device according to claim 1, characterized in that: A sealing layer (8) is connected to the outer wall of the inner tube (1) near the notch (3), and the sealing layer (8) abuts against the inner wall of the outer tube (2).

5. The photovoltaic cable protection device according to claim 1, characterized in that: The limiting member comprises a limiting sleeve (9) connected to one end of the outer tube (2); sliders (10) are respectively connected on both sides of the inner wall of the free end of the limiting sleeve (9); guide grooves (11) and limiting grooves (12) are respectively provided on both sides of the outer wall of the other end of the outer tube (2); the guide grooves (11) and limiting grooves (12) are both matched with the sliders (10); the guide grooves (11) are arranged along the axial direction of the outer tube (2) and pass through the free end of the outer tube (2); the other end of the guide grooves (11) is connected to the middle of the limiting grooves (12); and the limiting grooves (12) are arranged perpendicular to the guide grooves (11).

6. The photovoltaic cable protection device according to claim 1, characterized in that: The outer tube (2) is coated with a light reflecting layer (13).

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