CN219105805U

CN219105805U - Solar photovoltaic cable

Info

Publication number: CN219105805U
Application number: CN202320023847.6U
Authority: CN
Inventors: 张焕英; 杜超; 刘晶晶; 王伟
Original assignee: Tianjin Liuyi Special Cable Co ltd
Current assignee: Tianjin Liuyi Special Cable Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-05-30
Anticipated expiration: 2033-01-03

Abstract

The utility model relates to the technical field of photovoltaic cables, in particular to a solar photovoltaic cable, which comprises an outer protective sleeve, a fire-retardant sleeve and a cross partition plate. The internal interval of outer protective housing evenly runs through and sets up a plurality of optic fibre, and the inboard of outer lag sets up metal armor, and the inboard of metal armor sets up flexible lag, and the medial surface of metal armor and the laminating of the outer wall of flexible lag. The fire-retardant cover sets up in the inboard of flexible lag, and the surface of fire-retardant cover is laminated with the inner wall of flexible lag. The insulating layer interval sets up in the firestop cover, and insulating layer inboard sets up the sinle silk. The cross partition plate is arranged in the fire-retarding sleeve, each insulating layer is respectively arranged in the straight groove at the corresponding side of the cross partition plate, and the gaps between the inner wall of the fire-retarding sleeve, the cross partition plate and the insulating layers are filled with flame-retardant filler. The utility model has good stretching resistance, lateral extrusion capacity and fireproof performance, and can judge whether the outer protective sleeve is damaged or not according to the optical fiber signals.

Description

Solar photovoltaic cable

Technical Field

The utility model relates to the technical field of photovoltaic cables, in particular to a solar photovoltaic cable.

Background

The photovoltaic cable, namely the special photovoltaic cable, is mainly used for connecting a photovoltaic assembly, each photovoltaic power generation system device is a foundation of matched electrical equipment in a photovoltaic system, the basic structure of the photovoltaic cable comprises a conductor, an insulating layer and a sheath, and the photovoltaic cable is divided into a direct current cable and an alternating current cable. The photovoltaic cable has the advantages of high temperature resistance, cold resistance, oil resistance, acid and alkali resistance, ultraviolet resistance, flame retardance, environmental protection, long service life and the like, and is mainly used in severe climatic conditions.

The Chinese patent with the authorized bulletin number of CN208796688U discloses a solar photovoltaic cable, which has the advantages of good insulation and protection performance, corrosion resistance, interference resistance and external impact resistance on one hand, and on the other hand, the integration and modularization degree of the cable are improved by the effective realization, the flexible combination wiring among multiple groups of cables can be realized while the wiring structure and the positioning precision of the cable are standardized, and the wiring space is effectively saved.

However, the device still has the defects that: because the photovoltaic cable is very strict to high temperature resistant performance requirement, when the outside lag of cable is damaged, inside sinle silk burns easily because of high temperature or is eroded by the rainwater and damage, and this photovoltaic cable lacks the structure of being convenient for to outside lag damage detection to lack the wall of strengthening between this photovoltaic cable inside sinle silk, the sinle silk is mutually soluble because of high temperature easily between sinle silk and the sinle silk crust, causes danger.

Disclosure of Invention

The utility model aims to solve the problems in the background technology and provides a solar photovoltaic cable.

The technical scheme of the utility model is as follows: a solar photovoltaic cable comprises an outer protective sleeve, a fire-retardant sleeve and a cross-shaped partition plate.

The internal interval of outer protective housing evenly runs through and sets up a plurality of optic fibre, and the inboard of outer lag sets up metal armor, and the inboard of metal armor sets up flexible lag, and the surface of metal armor is laminated with the inner wall of outer lag, and the medial surface of metal armor is laminated with the outer wall of flexible lag.

The fire-retardant cover sets up in the inboard of flexible lag, and the surface of fire-retardant cover is laminated with the inner wall of flexible lag. The insulating layers are uniformly arranged on the inner sides of the fire-retardant sleeves at intervals, and the inner sides of the insulating layers are respectively provided with wire cores corresponding to the insulating layers.

The cross division plate is arranged on the inner side of the fire-retarding sleeve, each insulating layer is respectively arranged in a straight groove on the corresponding side of the cross division plate, and the gaps between the inner wall of the fire-retarding sleeve and the outer surfaces of the cross division plate and the insulating layers are filled with flame-retarding filler.

Preferably, the inner space of the fire-retardant sleeve is provided with a plurality of water-stop plates, through holes are arranged on the water-stop plates, and the insulating layer penetrates through and is in sealing fit with the water-stop plates.

Preferably, the system also comprises a light detector, a controller and an alarm. The light detector comprises a light source emitting end and a light source receiving end, the light source emitting end and the light source receiving end are respectively connected with corresponding ends of the optical fibers, the light detector is in communication connection with the controller, and the controller is in control connection with the alarm.

Preferably, the wire core is a copper wire core, a shielding sleeve is arranged on the outer portion of the wire core in a coating mode, and the outer surface of the shielding sleeve is attached to the inner wall of the insulating layer.

Preferably, the wire core includes at least three power transmission wire cores and one ground wire core.

Preferably, the cross-shaped partition plate is a high-temperature-resistant flexible partition plate.

Preferably, the outer protective sheath is an irradiation crosslinked polyolefin insulating protective sheath.

Compared with the prior art, the utility model has the following beneficial technical effects:

through the arrangement of the metal armor layer, the inner structure is protected by the metal armor layer, and the lateral impact resistance and the radial stretching capacity of the cable can be enhanced; by arranging the optical fiber in the outer protective sleeve, a detector can detect the optical fiber at random through the optical path signal of the optical fiber and determine whether the outer protective sleeve is damaged, so that the maintainer can find that the cable has an ageing problem in time, and the cable is convenient to replace in time; through the arrangement of the cross partition plates, each wire core is partitioned and separated by the cross partition plates, and the mutual melting of the outer skins caused by the contact of high temperature between the adjacent high Wen Xianxin outer skins is prevented; through setting up the water proof plate, prevent when putting the cable that the rainwater from the cable cuts the position and get into in the cable.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

fig. 2 is a view showing the internal structure of the firestop jacket.

Reference numerals: 1. an outer protective sleeve; 2. an optical fiber; 3. a metal armor layer; 4. a flexible protective sleeve; 5. a firestop jacket; 6. a water-stop plate; 7. flame retardant filler; 8. an insulating layer; 9. a wire core; 10. cross partition plate.

Detailed Description

Example 1

As shown in fig. 1-2, the solar photovoltaic cable provided by the utility model comprises an outer protective sleeve 1, a fire-retardant sleeve 5 and a cross partition plate 10. The inner space of the shell of the outer protective sleeve 1 is evenly penetrated with a plurality of optical fibers 2, the inner side of the outer protective sleeve 1 is provided with a metal armor layer 3, the inner side of the metal armor layer 3 is provided with a flexible protective sleeve 4, the outer surface of the metal armor layer 3 is attached to the inner wall of the outer protective sleeve 1, and the inner side surface of the metal armor layer 3 is attached to the outer wall of the flexible protective sleeve 4. The fire-retardant sleeve 5 is arranged on the inner side of the flexible protective sleeve 4, and the outer surface of the fire-retardant sleeve 5 is attached to the inner wall of the flexible protective sleeve 4. The insulating layers 8 are uniformly arranged on the inner side of the fire-retardant sleeve 5 at intervals, and the inner sides of the insulating layers 8 are respectively provided with a wire core 9 corresponding to the insulating layers. The cross partition plate 10 is arranged on the inner side of the fire-retarding jacket 5, each insulating layer 8 is respectively arranged in a straight groove on the corresponding side of the cross partition plate 10, and the gaps between the inner wall of the fire-retarding jacket 5 and the outer surfaces of the cross partition plate 10 and the insulating layers 8 are filled with flame-retarding filler 7.

In the embodiment, the flame-retardant filling layer 7 is matched with the cross partition plate 10 to separate the adjacent wire cores, so that the short circuit caused by the mutual fusion of the two adjacent wire cores due to high temperature during working is prevented, and the flame-retardant filling layer can also effectively prevent the internal short circuit caused by breakdown of the insulating layer; through setting up flexible lag 4, utilize flexible lag 4 to protect its inner structure and part, prevent the cable from bending in-process, the acute angle of metal armor is scratched the inner structure; in addition, the utility model divides the inner flame-retardant filling layer into the small compartments by arranging the plurality of groups of waterproof plates 6, so that the inner flame-retardant filling layer cannot be separated when the cable is bent, and meanwhile, the outer rainwater is prevented from immersing into deeper parts inside the cable along the section of the cable.

Example two

As shown in fig. 2, in the solar photovoltaic cable according to the present utility model, compared with the first embodiment, the fire-retardant cover 5 is provided with a plurality of water-stop plates 6 at intervals, through holes are provided on the water-stop plates 6, and the insulating layer 8 penetrates through and is in sealing fit with the water-stop plates.

In this embodiment, the section end of the cable may be in a wet or rain environment during paying-off, and in order to prevent the rain from further immersing into the deep part of the cable sheath, the cable is isolated by the water-stop plate 6.

Example III

Compared with the first embodiment, the solar photovoltaic cable provided by the utility model further comprises a light detector, a controller and an alarm. The light detector comprises a light source emitting end and a light source receiving end, the light source emitting end and the light source receiving end are respectively connected with corresponding ends of the optical fiber 2, the light detector is in communication connection with the controller, and the controller is in control connection with the alarm.

In this embodiment, the service life of the photovoltaic cable or other cables has a certain period, but the period is not fixed, and the service life is different according to the different environments where the photovoltaic cable is located, so as to measure the aging degree of the cable approximately, the light source receiving end and the light source emitting end are used for correlation, real-time detection is performed, and when the change of the light source signal is detected, the serious aging of the cable or the accidental damage of the outer skin is judged.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The solar photovoltaic cable is characterized by comprising an outer protective sleeve (1), a fire-retarding sleeve (5) and a cross partition plate (10);

the inner space of the shell of the outer protective sleeve (1) is uniformly penetrated with a plurality of optical fibers (2), the inner side of the outer protective sleeve (1) is provided with a metal armor layer (3), the inner side of the metal armor layer (3) is provided with a flexible protective sleeve (4), the outer surface of the metal armor layer (3) is attached to the inner wall of the outer protective sleeve (1), and the inner side surface of the metal armor layer (3) is attached to the outer wall of the flexible protective sleeve (4);

the fire-retardant sleeve (5) is arranged on the inner side of the flexible protective sleeve (4), and the outer surface of the fire-retardant sleeve (5) is attached to the inner wall of the flexible protective sleeve (4); the insulating layers (8) are uniformly arranged at intervals on the inner side of the fire-retardant sleeve (5), and the inner sides of the insulating layers (8) are respectively provided with wire cores (9) corresponding to the insulating layers;

the cross partition plate (10) is arranged on the inner side of the fire-retarding sleeve (5), each insulating layer (8) is respectively arranged in a straight groove on the corresponding side of the cross partition plate (10), and gaps between the inner wall of the fire-retarding sleeve (5) and the outer surfaces of the cross partition plate (10) and the insulating layers (8) are filled with flame-retarding filler (7).

2. A solar photovoltaic cable according to claim 1, characterized in that the inner space of the fire-retardant sleeve (5) is provided with a plurality of water-stop plates (6), the water-stop plates (6) are provided with through holes, and the insulating layer (8) penetrates through and is in sealing fit with the through holes.

3. The solar photovoltaic cable of claim 1, further comprising a light detector, a controller, and an alarm; the light detector comprises a light source emitting end and a light source receiving end, the light source emitting end and the light source receiving end are respectively connected with corresponding ends of the optical fibers (2), the light detector is in communication connection with the controller, and the controller is in control connection with the alarm.

4. The solar photovoltaic cable according to claim 1, characterized in that the wire core (9) is a copper wire core, a shielding sleeve is arranged on the outer part of the wire core (9) in a coating mode, and the outer surface of the shielding sleeve is attached to the inner wall of the insulating layer (8).

5. A solar photovoltaic cable according to claim 1, characterized in that the core (9) comprises at least three power transmission cores and one ground core.

6. A solar photovoltaic cable according to claim 1, characterized in that the cross-shaped separator (10) is a high temperature resistant flexible separator.

7. A solar photovoltaic cable according to claim 1, characterized in that the outer protective sheath (1) is an irradiation cross-linked polyolefin insulating protective sheath.