CN213752096U

CN213752096U - Halogen-free flame-retardant sheath for photovoltaic cable

Info

Publication number: CN213752096U
Application number: CN202022598742.2U
Authority: CN
Inventors: 李前进
Original assignee: Jiangsu Xinshang New Material Technology Co ltd
Current assignee: Jiangsu Xinshang New Material Technology Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-07-20
Anticipated expiration: 2030-11-11

Abstract

The utility model relates to a photovoltaic cable technical field just discloses a photovoltaic cable is with there being fire-retardant sheath of halogen-free, which comprises an outer cover, the inboard fixed connection fire sleeve of overcoat, fire sleeve's inboard fixedly connected with enhancement layer, the first filler of inboard fixedly connected with of enhancement layer, the inner wall fixedly connected with quantity of enhancement layer is a plurality of and is located the inside outer connecting seat of first filler, the outer fixed surface of insulating cover is connected with quantity for a plurality of and with the corresponding in-connection seat of outer connecting seat, the joint has the cushion ball between one side that in-connection seat and outer connecting seat are relative. This photovoltaic cable is with there being not steamed fire-retardant sheath is through buffering the decompression to the pressure that the cable receives to reach the strong purpose of crushing resistance, effectually avoided the cable to take place damage or fracture, possess simultaneously insulating, fire-retardant, corrosion-resistant and the high characteristic of intensity, when having strengthened the practicality, facilitate the use.

Description

Halogen-free flame-retardant sheath for photovoltaic cable

Technical Field

The utility model relates to a photovoltaic cable technical field specifically is a photovoltaic cable is with there being not fire-retardant sheath of halogen.

Background

Solar technology will become one of the green energy technologies in the future, solar energy or Photovoltaic (PV) is increasingly widely used in china, and besides the rapid development of government-supported photovoltaic power plants, private investors are actively building factories and planning to put in production of solar modules for global sale.

The characteristics of the photovoltaic cable are determined by the special insulating material and the sheath for the cable, which is called as cross-linked PE, after irradiation of an irradiation accelerator, the molecular structure of the cable material is changed, so that various performances of the cable are provided, the existing halogen-free flame-retardant sheath for the photovoltaic cable on the market at present has the defect of poor compressive resistance, and in the using process, the cable needs to bear pressure, bending, tension, cross tensile load and strong impact.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a photovoltaic cable is with there being not steamed fire-retardant sheath possesses advantages such as crushing resistance is good, has solved in the use, and the cable must bear pressure, buckle, tension, cross tensile load and powerful impact, and current photovoltaic cable is usually through packing at its inside setting to reach the purpose of resistance to compression, only through packing not only can't reach anticipated resistance to compression effect, take place damage or fracture easily simultaneously, influence the problem of photovoltaic cable's normal use.

(II) technical scheme

For the purpose that realizes above-mentioned crushing resistance is good, the utility model provides a following technical scheme: a halogen-free flame-retardant sheath for a photovoltaic cable comprises an outer sleeve, wherein a fireproof sleeve is fixedly connected to the inner side of the outer sleeve, a reinforcing layer is fixedly connected to the inner side of the fireproof sleeve, a first filler is fixedly connected to the inner side of the reinforcing layer, a plurality of outer connecting seats are fixedly connected to the inner wall of the reinforcing layer and are located in the first filler, an insulating sleeve is fixedly connected to the inner wall of the first filler, a plurality of inner connecting seats corresponding to the outer connecting seats are fixedly connected to the outer surface of the insulating sleeve, a buffer ball is clamped between one side, opposite to the outer connecting seats, of each inner connecting seat, a plurality of buffer springs located in the first filler are fixedly connected between the insulating sleeve and the reinforcing layer, a plurality of flame-retardant layers are fixedly connected to the inner wall of the insulating sleeve, and a second filler is fixedly connected to the inner part of the insulating sleeve, it is a plurality of equal joint has the cable core between the fire-retardant layer, the inside fixedly connected with of insulating cover is located the inside support of second filler.

Preferably, the outer sleeve is a polytetrafluoroethylene outer sleeve, and the fireproof sleeve is a silicon rubber glass fiber sleeve.

Preferably, the reinforcing layer is a metal woven belt reinforcing layer, and the first filler is an elastic filler.

Preferably, the insulating sleeve is a polyolefin insulating sleeve, and the second filler is a flame-retardant inorganic filler.

Preferably, the flame-retardant layer is a polyvinyl chloride and nitrile rubber synthetic flame-retardant layer, and one end of the bracket close to the cable core is arc-shaped and is attached to the outer surface of the cable core.

Preferably, a plurality of spacing grooves matched with the cable cores are formed between the flame-retardant layers, clamping grooves matched with the buffer balls are formed in one side, opposite to the outer connecting seat, of the inner connecting seat, and the buffer balls are oval.

(III) advantageous effects

Compared with the prior art, the utility model provides a photovoltaic cable is with there being not fire-retardant sheath of halogen possesses following beneficial effect:

the halogen-free flame-retardant sheath for the photovoltaic cable is provided with the outer sleeve which is a polytetrafluoroethylene outer sleeve, the polytetrafluoroethylene outer sleeve has excellent chemical stability, corrosion resistance, sealing property, high lubrication non-adhesiveness, electric insulation property and good ageing resistance, the fireproof sleeve is a silicon rubber glass fiber sleeve, the silicon rubber glass fiber sleeve is woven into a tube by adopting high-purity alkali-free glass fibers, organic silica gel is coated on the outer wall of the tube and is subjected to vulcanization treatment to form the halogen-free flame-retardant sheath, the halogen-free flame-retardant sheath has the advantages of high temperature resistance, heat preservation and heat insulation property, flame retardant property, electric insulation property, chemical stability, weather resistance, cold resistance, water resistance, oil resistance, ozone resistance, voltage resistance, electric arc resistance, corona resistance and the like, the reinforcing layer is a metal braid reinforcing layer, the cable can be enhanced in strength and simultaneously has a shielding function, and the first filler is an elastic filler, the outer connecting seat, the buffer ball, the inner connecting seat and the buffer spring are matched to effectively reduce the external pressure and buffer the pressure so as to protect the cable, the insulating sleeve is a polyolefin insulating sleeve, the polyolefin has the characteristics of small relative density, chemical resistance, good water resistance, good mechanical strength, good electrical insulation and the like, the second filler is a flame-retardant inorganic filler which can play an effective flame-retardant role, the flame-retardant layer is a flame-retardant layer synthesized by polyvinyl chloride and nitrile rubber and has a flame-retardant role, a plurality of cable cores can be divided and fixed through the matching between the flame-retardant layer and the bracket, the flame-retardant layer has certain elasticity and can buffer and reduce the pressure of the cable cores, and the device buffers and reduces the pressure of the cable so as to achieve the aim of strong pressure resistance and effectively avoid the cable from being damaged or broken, the novel flame-retardant cable has the characteristics of insulation, flame retardance, corrosion resistance and high strength, and is convenient to use while the practicability is enhanced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: the cable comprises an outer sleeve 1, a reinforcing layer 2, a first filler 3, an outer connecting seat 4, a buffer ball 5, an insulating sleeve 6, an inner connecting seat 7, a buffer spring 8, a second filler 9, a cable core 10, a flame-retardant layer 11, a support 12 and a fireproof sleeve 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a halogen-free flame retardant sheath for a photovoltaic cable comprises an outer sleeve 1, a fire-proof sleeve 13 fixedly connected to the inner side of the outer sleeve 1, the outer sleeve 1 is a teflon outer sleeve, the fire-proof sleeve 13 is a silicon rubber glass fiber sleeve, a reinforcing layer 2 is fixedly connected to the inner side of the fire-proof sleeve 13, a first filler 3 is fixedly connected to the inner side of the reinforcing layer 2, the reinforcing layer 2 is a metal braid reinforcing layer, the first filler 3 is an elastic filler, a plurality of outer connecting seats 4 located inside the first filler 3 are fixedly connected to the inner wall of the reinforcing layer 2, an insulating sleeve 6 is fixedly connected to the inner wall of the first filler 3, a plurality of inner connecting seats 7 corresponding to the outer connecting seats 4 are fixedly connected to the outer surface of the insulating sleeve 6, buffer balls 5 are clamped between the inner connecting seats 7 and the side opposite to the outer connecting seats 4, a plurality of buffer springs 8 located inside the first filler 3 are fixedly connected between the insulating sleeve 6 and the reinforcing layer 2, inner wall fixedly connected with quantity of insulating cover 6 is a plurality of fire-retardant layer 11, all set up the spacing groove with cable core 10 looks adaptation between a plurality of fire-retardant layers 11, the draw-in groove with 5 looks adaptations of buffering ball is all seted up to one side that interior connecting seat 7 is relative with outer connecting seat 4, buffering ball 5 is oval, the inside fixedly connected with second filler 9 of insulating cover 6, insulating cover 6 is the insulating cover of polyolefin, second filler 9 is fire-retardant inorganic matter filler, equal joint has cable core 10 between a plurality of fire-retardant layers 11, the inside fixedly connected with of insulating cover 6 is located the inside support 12 of second filler 9, fire-retardant layer 11 is the synthetic fire-retardant layer of polyvinyl chloride and butadiene-acrylonitrile rubber, support 12 is the arc and laminates mutually with the surface of cable core 10 near the one end of cable core 10.

In conclusion, the halogen-free flame-retardant sheath for the photovoltaic cable is provided with the outer sleeve 1, the outer sleeve 1 is a polytetrafluoroethylene outer sleeve, the polytetrafluoroethylene outer sleeve has excellent chemical stability, corrosion resistance, sealing performance, high lubrication non-adhesiveness, electric insulation performance and good anti-aging endurance, the fireproof sleeve 13 is a silicon rubber glass fiber sleeve, the silicon rubber glass fiber sleeve is a pipe woven by high-purity alkali-free glass fibers, organic silicon gel is coated on the outer wall of the pipe and is subjected to vulcanization treatment, the halogen-free flame-retardant sheath has the advantages of high temperature resistance, heat preservation and heat insulation performance, flame retardant performance, electric insulation performance, chemical stability, weather resistance and aging resistance, cold resistance, water resistance, oil resistance, ozone resistance, voltage resistance, electric arc resistance, corona resistance and the like, the reinforcing layer 2 is a metal braided belt reinforcing layer, the strength of the cable can be increased, and the shielding function is also realized, through the first filler 3 is elastic filler, and by outer connecting seat 4, buffer ball 5, cooperation between inner connecting seat 7 and buffer spring 8, the effectual external pressure that has reduced, and cushion pressure, thereby protect the cable, through insulating cover 6 for the insulating cover of polyolefin, polyolefin has characteristics such as relative density is little, chemical resistance, good water proofness, good mechanical strength and electrical insulation, through the second filler 9 for fire-retardant inorganic filler, can play effectual fire-retardant effect, through fire-retardant layer 11 for polyvinyl chloride and nitrile rubber synthesis fire-retardant layer, not only possess fire-retardant effect, simultaneously the cooperation between accessible and support 12, cut apart fixedly to a plurality of cable cores 10, fire-retardant layer 11 possesses certain elasticity simultaneously, can cushion the decompression to cable core 10, the device cushions the decompression through the pressure that receives the cable, thereby reach the purpose that the crushing resistance is strong, effectually avoided the cable to take place damage or fracture, possess simultaneously insulating, fire-retardant, characteristics that corrosion-resistant and intensity are high, when having strengthened the practicality, facilitate the use, solved in the use, the cable must bear pressure, buckle, tension, cross tensile load and powerful impact, current photovoltaic cable is usually through setting up the filler in its inside, in order to reach the purpose of resistance to compression, only through filling not only can't reach anticipated resistance to compression effect, take place damage or fracture easily simultaneously, influence photovoltaic cable's normal use problem.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a photovoltaic cable is with fire-retardant sheath of nothing halogen, includes overcoat (1), its characterized in that: the inner side of the outer sleeve (1) is fixedly connected with a fireproof sleeve (13), the inner side of the fireproof sleeve (13) is fixedly connected with a reinforcing layer (2), the inner side of the reinforcing layer (2) is fixedly connected with a first filler (3), the inner wall of the reinforcing layer (2) is fixedly connected with a plurality of outer connecting seats (4) which are positioned inside the first filler (3), the inner wall of the first filler (3) is fixedly connected with an insulating sleeve (6), the outer surface of the insulating sleeve (6) is fixedly connected with a plurality of inner connecting seats (7) which correspond to the outer connecting seats (4), a buffer ball (5) is clamped between one side of the inner connecting seats (7) opposite to the outer connecting seats (4), and a plurality of buffer springs (8) which are positioned inside the first filler (3) are fixedly connected between the insulating sleeve (6) and the reinforcing layer (2), the inner wall fixedly connected with quantity of insulating cover (6) is fire-retardant layer (11) a plurality of, the inside fixedly connected with second of insulating cover (6) packs (9), and is a plurality of equal joint has cable core (10) between fire-retardant layer (11), the inside fixedly connected with of insulating cover (6) is located second and packs support (12) inside (9).

2. The halogen-free flame retardant sheath for photovoltaic cable according to claim 1, characterized in that: the outer sleeve (1) is a polytetrafluoroethylene outer sleeve, and the fireproof sleeve (13) is a silicon rubber glass fiber sleeve.

3. The halogen-free flame retardant sheath for photovoltaic cable according to claim 1, characterized in that: the reinforcing layer (2) is a metal braided belt reinforcing layer, and the first filler (3) is an elastic filler.

4. The halogen-free flame retardant sheath for photovoltaic cable according to claim 1, characterized in that: the insulating sleeve (6) is a polyolefin insulating sleeve, and the second filler (9) is a flame-retardant inorganic filler.

5. The halogen-free flame retardant sheath for photovoltaic cable according to claim 1, characterized in that: the flame-retardant layer (11) is a flame-retardant layer synthesized by polyvinyl chloride and nitrile rubber, and one end of the bracket (12) close to the cable core (10) is arc-shaped and is attached to the outer surface of the cable core (10).

6. The halogen-free flame retardant sheath for photovoltaic cable according to claim 1, characterized in that: a plurality of all set up between fire-retardant layer (11) with the spacing groove of cable core (10) looks adaptation, the draw-in groove with buffering ball (5) looks adaptation is all seted up to one side that interior connecting seat (7) are relative with outer connecting seat (4), buffering ball (5) are oval.