CN114898916A

CN114898916A - Acid-resistant distributed photovoltaic power generation cable, production equipment and use method

Info

Publication number: CN114898916A
Application number: CN202210212318.0A
Authority: CN
Inventors: 芮黎春; 吴贤良; 吴勇
Original assignee: Wuxi City Pu Cao Technology Co ltd
Current assignee: Wuxi City Pu Cao Technology Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-08-12
Anticipated expiration: 2042-03-04
Also published as: CN114898916B

Abstract

The invention relates to the technical field of power equipment, in particular to an acid-resistant distributed photovoltaic power generation cable, production equipment and a use method; the temperature control device comprises a conductor, and a protection component and a temperature control component which are coated outside the conductor, wherein the protection component comprises an electric insulation layer, a soft armor layer and a surface layer, and the temperature control component comprises a unidirectional heat dissipation layer and a heat insulation layer; the cable comprises a conductor, and is characterized in that an electric insulating layer, a soft armor layer, a one-way heat dissipation layer, a heat insulation layer, the soft armor layer and a surface layer are sequentially wrapped outside the conductor, the one-way heat dissipation layer is made of soft, transparent and heat-insulating PVC (polyvinyl chloride) glass, heat-conducting reflector plates are densely distributed in the PVC glass, the surfaces of the reflector plates facing the outer end of the cable are plated with reflecting layers, the surfaces of the reflector plates facing the inner end of the cable are coated with heat absorption layers, through notches are densely distributed in the surface of the heat insulation layer, and ports at two ends of each notch are provided with temperature memory alloy rods with the same critical temperature; the invention can effectively solve the problems of lower service life, higher electric energy transmission loss and the like in the prior art.

Description

Acid-resistant distributed photovoltaic power generation cable, production equipment and use method

Technical Field

The invention relates to an acid-resistant distributed photovoltaic power generation cable, production equipment and a use method.

Background

Cables are generally considered to be wires made of one or more mutually insulated conductors surrounded by an insulation and a protective layer for transmitting power or information from one place to another. Existing cables are classified into control cables, compensation cables, shield cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, aluminum alloy cables, photovoltaic cables, and the like.

In recent years, with the rapid popularization of new energy policies, solar energy has attracted more and more attention as an extremely important new energy source, and solar energy is applied to various fields such as establishment of photovoltaic power stations for solar power generation, because photovoltaic power stations are generally established in regions with abundant sunlight, the natural environment is generally severe in places with abundant sunlight, the temperature is hot, the ultraviolet radiation is large, photovoltaic cables are used as key parts in photovoltaic power generation and can be used under severe environmental conditions such as high temperature (100 ℃) and ultraviolet radiation along with solar energy systems, the day and night temperature difference is large, insect and ant gnawing and acid and alkali attack are often caused, the photovoltaic cables are used in such severe environments for a long time, and the structural requirements on the photovoltaic cables are high.

In the application number: CN202120519617.X discloses a soft aluminum alloy core photovoltaic cable, including soft aluminum alloy conductor, the outside fixed mounting of soft aluminum alloy conductor has the insulating layer, and the outside fixed mounting of insulating layer has the filling layer, and the outside fixed mounting of filling layer has the inner liner, and the outside fixed mounting of inner liner has the weaving layer, and the outside fixed mounting of weaving layer has the inoxidizing coating. Through adopting soft aluminum alloy as the conductor of this photovoltaic cable, make this photovoltaic cable have softness and easy bending property, what the insulating layer in this product adopted is exempt from the irradiation material, exempt from the irradiation material and can adopt halogen-free low smoke flame retardant polyolefin material, halogen-free low smoke flame retardant polyolefin material can regard as exempting from irradiation photovoltaic cable material, save time and cost, through the inner liner that comprises shielding layer and protective layer that sets up, the protective layer further protects soft aluminum alloy conductor, under the effect of shielding layer, make this photovoltaic cable have antistatic interference, anti external magnetic field interference, effects such as anti radio frequency interference, be favorable to the use of photovoltaic cable.

However, the following disadvantages still exist in the actual operation:

first, the service life is low, because the photovoltaic power generation field is usually disposed in a place with sufficient sunlight and rare human smoke, which makes the photovoltaic cable face the challenges of acid-base corrosion, ozone corrosion, hydrolytic corrosion, ultraviolet aging, abnormal temperature aging, animal bite and bite, and the cable in the above mentioned reference does not well address these practical problems.

Secondly, the power transmission loss is large because the higher the temperature of the photovoltaic cable is, the weaker the current-carrying capacity is when the cable transmits power, and the cable in the above-mentioned reference does not have the capacity of automatic cooling.

Disclosure of Invention

The present invention is directed to solving the problems of the prior art, and the problems set forth in the background above.

In order to achieve the purpose, the invention adopts the following technical scheme: an acid-resistant distributed photovoltaic power generation cable comprises a conductor, and a protection component and a temperature control component which are coated outside the conductor.

Furthermore, the protective component comprises an electric insulating layer, a soft armor layer and a surface layer, and the temperature control component comprises a unidirectional heat dissipation layer and a heat insulation layer; the outer portion of the conductor is sequentially wrapped with an electric insulating layer, a soft armor layer, a one-way heat dissipation layer, a heat insulation layer, a soft armor layer and an epidermal layer.

Furthermore, the conductor is any one of stranded wires formed by twisting a single wire or a plurality of wires.

Furthermore, a flexible filling rope is filled between the electric insulation layer and the conductor;

the unidirectional heat dissipation layer is made of soft, transparent and heat-insulating PVC glass, heat-conducting reflecting sheets are densely distributed in the PVC glass, the surface of each reflecting sheet, facing the outer end of the cable, is plated with a reflecting layer, the reflecting layer is any one of gold foil, silver foil or aluminum foil, and the surface of each reflecting sheet, facing the inner end of the cable, is coated with a heat absorption layer;

the surface of the heat insulation layer is densely provided with through gaps, the ports at the two ends of each gap are provided with temperature memory alloy rods with the same critical temperature, and the length of each temperature memory alloy rod below the critical temperature is smaller than that above the critical temperature;

the surface layer is made of ethylene propylene diene monomer.

Furthermore, the deformation amplitude of the temperature memory alloy rod close to the outer end of the cable of the notch is smaller than that of the temperature memory alloy rod close to the inner end of the cable, the notch is still in a closed state only when the temperature memory alloy rod close to the outer end of the cable is extended, and the notch is in an open state only when the temperature memory alloy rod close to the inner end of the cable is extended;

the outer surface of the epidermal layer is also coated with a heat-sensitive color-changing layer.

Furthermore, the change rule of the thermal induction color changing layer along with the temperature is as follows: the thermo-sensitive color changing layer gradually changes the color from dark to light with low and high temperature.

Furthermore, the outer surface of the heat-sensitive color changing layer is coated with a transparent paint surface protective layer.

Production equipment of an acid-resistant distributed photovoltaic power generation cable comprises a pay-off roller, a first twisting device, a second twisting device, a first coating device, a second coating device, a third coating device, a fourth coating device, a fifth coating device, a sixth coating device, a first painting device and a second painting device which are sequentially arranged; the input end of the second twisting device is further provided with a wire coiling roller, a lead is wound on the wire coiling roller in advance, and a filling rope is wound on the wire coiling roller in advance.

Furthermore, the number of the pay-off rollers is at least one, the pay-off rollers are distributed in a parallel mode, and the pay-off rollers and the wire coiling rollers are driven by speed reducing motors;

the output end of the second twisting device is also provided with an extrusion forming device;

and the output ends of the first painting device and the second painting device are respectively provided with a drying device.

The use method of the production equipment of the acid-resistant distributed photovoltaic power generation cable comprises the following steps:

s1, twisting the wires with the appointed number into stranded wires through a first twisting device;

s2, filling the filling ropes into the stranded wire gaps through a second twisting device;

s3, extruding the filling rope and the stranded wire into a cylindrical shape through an extrusion forming device;

s4, uniformly and compactly wrapping the electric insulation layer on the stranded wire through a first wrapping device;

s5, uniformly and compactly coating a soft armor layer on the electric insulation layer through a second coating device;

s6, uniformly and compactly wrapping the unidirectional heat dissipation layer on the soft armor layer in the S5 through a third wrapping device;

s7, uniformly and compactly wrapping the heat insulation layer on the one-way heat dissipation layer through the fourth wrapping device;

s8, uniformly and compactly coating a soft armor layer on the heat insulation layer again through a fifth coating device;

s9, wrapping the skin layer uniformly and tightly around the soft armor layer of S8 by a sixth wrapping device;

s10, uniformly spraying a thermal induction color-changing coating on the outer surface of the surface layer through a first painting device;

s11, drying the thermal induction color-changing coating through a drying device at the output end of the first painting device so as to form a thermal induction color-changing layer;

s12, uniformly spraying protective paint on the outer surface of the heat-sensitive color changing layer through a second painting device;

and S13, drying the protective paint through a drying device at the output end of the second painting device, thereby forming a paint surface protective layer.

Compared with the prior art, the invention has the advantages and positive effects that:

1. according to the invention, the protection component is coated outside the conductor, the protection component comprises an electric insulation layer, a soft armor layer and a surface layer, and the surface layer is made of ethylene propylene diene monomer.

Can avoid the conductor electric leakage like this through electric insulation layer, soft armour layer protection cable does not receive gnawing of animal and eat and damage, and soft armour layer itself possesses the effect of electromagnetic shield because adopting metal material to make simultaneously, and the epidermal layer possesses excellent weatherability, resistant ozone, heat-resisting, acid and alkali-resistance, water vapor resistance, corrosion resistance and ultraviolet resistance etc. characteristics because adopt ethylene propylene diene monomer.

The effect of effectively prolonging the service life of the cable in practical application is achieved.

2. The temperature control assembly is coated on the outer surface of the conductor, the temperature control assembly comprises a one-way heat dissipation layer and a heat insulation layer, the one-way heat dissipation layer is made of flexible, transparent and heat-insulating PVC glass, heat-conducting reflection sheets are densely distributed in the PVC glass, the surfaces of the reflection sheets facing the outer end of the cable are plated with the reflection layers, the reflection layers are made of any one of gold foils, silver foils or aluminum foils, the surfaces of the reflection sheets facing the inner end of the cable are coated with heat absorption layers, through notches are densely distributed on the surface of the heat insulation layer, temperature memory alloy rods with the same critical temperature are arranged at ports at two ends of the notches, the length of the temperature memory alloy rods below the critical temperature is smaller than that of the temperature memory alloy rods above the critical temperature, the deformation amplitude of the temperature memory alloy rods close to the outer end of the cable is smaller than that of the temperature memory alloy rods close to the inner end of the cable, and only when the temperature memory alloy rods close to the outer end of the cable extend, the notch is still in the closed position and is designed to be in the open position only when the temperature memory alloy rod near the inner end of the cable is extended.

When the heat of the conductor rises to the specified temperature, the temperature control assembly can unidirectionally radiate the redundant heat on the conductor to the outside of the cable; meanwhile, the influence of external high temperature or low temperature on the temperature of the conductor can be prevented.

The effect of effectively reducing the electric energy loss degree of the cable in the product is achieved.

Drawings

Fig. 1 is a pictorial view of a cable in partial cross-section from a first perspective of the present invention.

Fig. 2 is an exploded view of the cable from a second perspective of the present invention.

Fig. 3 is a cross-sectional view showing the cross-sectional structure of the cable according to the present invention.

FIG. 4 is a view showing the structure of the notch of the thermal insulation layer according to the present invention.

FIG. 5 is a diagram showing the state of the notch in the thermal insulation layer when the temperatures at the two ends of the unidirectional heat dissipation layer and the thermal insulation layer are different.

Fig. 6 is a further explanatory diagram of the third row of the table in fig. 5.

Fig. 7 is an enlarged view of the area a in fig. 2.

Fig. 8 is a partial enlarged plan view of the unidirectional heat dissipation layer of the present invention viewed from the outside of the cable to the inside.

Fig. 9 is a partial enlarged plan view of the unidirectional heat dissipating layer of the present invention viewed from the inside to the outside of the cable.

Fig. 10 is a structural view of a photovoltaic cable production apparatus of the present invention.

1000-a protective component; 1001 — electrically insulating layer; 1002-soft armor layer; 1003-skin layer; 1004-a filler rope; 1005-heat induction color changing layer; 1006-a finish protection layer;

2000-temperature control assembly; 2100-one-way heat sink layer; 2200-a thermal insulation layer;

2101-PVC glass; 2102-a reflective sheet; 2103-a reflective layer; 2104-a heat sink layer;

2201-notch; 2202-temperature memory alloy rod;

3000-paying out roller; 3001-a first twisting device; 3002-a second twisting device; 3003-a first coating means; 3004-a second coating means; 3005-a third coating device; 3006-a fourth cladding apparatus; 3007-a fifth cladding apparatus; 3008-a sixth cladding apparatus; 3009-a first varnishing device; 3010-a second varnishing unit; 3011-a wire-coiling roller; 3012-a geared motor; 3013-extrusion molding apparatus; 3014-a drying device;

4000-a conductor; 4001-conducting wire.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.

An acid-resistant distributed photovoltaic power generation cable of this embodiment, refer to fig. 1-9: comprises a conductor 4000, a protective component 1000 and a temperature control component 2000 which are coated outside the conductor 4000.

Protective component 1000 includes an electrically insulating layer 1001, a soft armor layer 1002, and a skin layer 1003; the electric insulation layer 1001 is used for preventing the electric leakage of the conductor 4000, the soft armor layer 1002 is used for protecting the cable from being bitten by animals without damaging the conductor 4000, so that the cable is prevented from being short-circuited or disconnected and other faults, and the surface layer 1003 is used for protecting the cable from being damaged by acid-base corrosion, ozone corrosion, hydrolytic corrosion, ultraviolet aging, abnormal temperature aging and the like, so that the effective service life of the cable is prolonged.

Temperature control assembly 2000 includes a unidirectional heat sink layer 2100 and a thermal insulation layer 2200.

The conductor 4000 is externally coated with an electrical insulation layer 1001, a soft armor layer 1002, a unidirectional heat dissipation layer 2100, a thermal insulation layer 2200, a soft armor layer 1002 and a skin layer 1003 in sequence.

It is worth noting that: in the practical application process of the present invention, the manner of coating the protection component 1000 and the temperature control component 2000 outside the conductor 4000 may also be: an electric insulating layer 1001, a unidirectional heat dissipation layer 2100, a heat insulation layer 2200, a soft armor layer 1002 and a skin layer 1003 can be sequentially coated outside the conductor 4000; the conductor 4000 can be sequentially coated with an electric insulating layer 1001, a unidirectional heat dissipation layer 2100, a soft armor layer 1002, a heat insulation layer 2200, the soft armor layer 1002 and a skin layer 1003 outside; and the conductor 4000 may be coated with an electric insulating layer 1001, a soft armor layer 1002, a unidirectional heat dissipation layer 2100, a heat insulation layer 2200, a skin layer 1003 and the like in sequence.

(A)

The conductor 4000 is any one of a single wire 4100 or a stranded wire formed by twisting a plurality of wires 4100.

In this embodiment, the conductor 4000 is a stranded wire formed by twisting a plurality of wires 4100, because the stranded wire has the advantages of good bending resistance, high tensile strength, small cable size, attractive appearance, low loss and the like in the process of transmitting electric energy compared with the wires 4100.

(II)

A flexible filling rope 1004 is further filled between the electrical insulation layer 1001 and the conductor 4000, and in this embodiment, the filling rope 1004 is made of a flame retardant PP material, so that the filling rope 1004 includes: the product is white and clean, the cost is low, and the cost performance is extremely high; secondly, the flame retardant property is good (off fire extinguishment); raw materials are special (other raw materials are not needed, the production is convenient and easy, and the quality is stable); environmental protection (recoverable and easy to recover); excellent aging resistance (the cable does not decay after being filled for a long time); excellent electrical insulation and flexibility.

(III)

The unidirectional heat dissipation layer 2100 is made of flexible, transparent and heat-insulating PVC glass 2101, a heat-conducting reflection sheet 2102 is densely distributed in the PVC glass 2101, the surface of the reflection sheet 2102 facing the outer end of the cable is plated with a reflection layer 2103, the reflection layer 2103 is made of any one of gold foil, silver foil or aluminum foil (in the embodiment, the reflection layer 2103 is made of gold foil plating, because a gold mirror has the best reflection effect on light radiation in an infrared band), and the surface of the reflection sheet 2102 facing the inner end of the cable is coated with a heat absorption layer 2104 (in the embodiment, the heat absorption layer 2104 is made of carbon nanotubes, because the heat absorption layer can fully absorb the light radiation in the infrared band).

(IV)

Through notches 2201 are densely distributed on the surface of the heat insulation layer 2200, temperature memory alloy rods 2202 with the same critical temperature are arranged at ports at two ends of each notch 2201, and the length of each temperature memory alloy rod 2202 below the critical temperature is smaller than that above the critical temperature.

The deformation amplitude of the temperature memory alloy rod 2202 of the notch 2201 near the outer end of the cable is smaller than that of the temperature memory alloy rod 2202 near the inner end of the cable, and the notch 2201 is still in a closed state only when the temperature memory alloy rod 2202 near the outer end of the cable is extended, and the notch 2201 is in an open state only when the temperature memory alloy rod 2202 near the inner end of the cable is extended.

It is worth noting that: in this embodiment, the temperature memory alloy rod 2202 has a two-way memory effect or a full-way memory effect, which ensures that the two temperature memory alloy rods 2202 at the two ends of the gap 2201 cooperate to form an equivalent valve.

It is worth noting that: the temperature memory alloy rods 2202 at both ends of the gap 2201 are exposed to the surface of the corresponding side of the heat insulating layer 2200.

In summary, the working principle of the unidirectional heat dissipation layer 2100 and the thermal insulation layer 2200 is described with reference to the above (three) and (four) and with reference to fig. 3, 4 and 5:

first, the conductor 4000 generates heat during power transmission, and then under certain environments (such as high ambient temperature, strong light exposure, etc.) or working conditions (such as short circuit of lines, etc.), the temperature of the conductor 4000 exceeds its rated temperature, which may increase the power loss on the conductor 4000, so that it is necessary to dissipate the excessive heat on the conductor 4000 in order to ensure the stability and reliability of the power system.

As shown in fig. 3: this is a cross-sectional structural view of the cable of the present invention,

in a first step, when the temperature of the conductor 4000 exceeds the rated temperature, the heat of the conductor 4000 is transferred to the reflective sheet 2102 in a radiation manner, and the heat absorbing layer 2104 of the reflective sheet 2102 continuously absorbs the infrared radiation (i.e., heat) from the conductor 4000.

Second, the reflective sheet 2102 radiatively transfers heat to the temperature memory alloy rod 2202 at the inner end of the thermal insulating layer 2200.

In this process, temperature memory alloy rod 2202 at the inner end of thermal insulation layer 2200 also radiates heat to unidirectional heat sink layer 2100, thermal insulation layer 2200 emits heat radiated from reflector 2102 back to unidirectional heat sink layer 2100 because it does not absorb heat, and reflective layer 2103 reflects this infrared radiation back to thermal insulation layer 2200 and thermal insulation layer 2200 inner end temperature memory alloy rod 2202 again (only a very small amount of infrared radiation will be reflected to conductor 4000, and most of the infrared radiation will be reflected back and forth between unidirectional heat sink layer 2100 and thermal insulation layer 2200).

Third, temperature memory alloy rod 2202 at the inner end of thermal insulation layer 2200 is heated to a critical temperature by heat between unidirectional thermal insulation layer 2100 and thermal insulation layer 2200, so that temperature memory alloy rod 2202 at the inner end of thermal insulation layer 2200 is deformed and elongated, and gap 2201 is opened.

Fourthly, after the gap 2201 is opened, the heat between the unidirectional heat dissipation layer 2100 and the thermal insulation layer 2200 is transferred to the epidermis 1003 in a radiation mode and is radiated to the outside through the epidermis 1003.

Fifthly, when the conductor 4000 returns to normal, the heat between the one-way heat dissipation layer 2100 and the heat insulation layer 2200 is reduced, the temperature on the temperature memory alloy rod 2202 at the inner end of the heat insulation layer 2200 is reduced to be lower than the critical temperature, and the temperature memory alloy rod 2202 at the inner end of the heat insulation layer 2200 deforms and shortens, so that the notch 2201 is closed.

In summary, the following steps: the invention can form an equivalent one-way valve for limiting the heat transfer direction by combining the unique one-way heat dissipation layer 2100 and the unique heat insulation layer 2200.

It is worth noting that: in fig. 4 and 5, T1 means the temperature at the outer end of the thermal insulation layer 2200 (which can be regarded as ambient temperature), T2 means the temperature between the thermal insulation layer 2200 and the unidirectional heat dissipation layer 2100, and Tn means the critical temperature of the temperature memory alloy.

(V)

The skin layer 1003 is made of ethylene propylene diene monomer rubber, because ethylene propylene diene monomer rubber has good weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical properties (good electrical insulation property and corona resistance property, superior to or close to styrene butadiene rubber, chlorosulfonated polyethylene, polyethylene and crosslinked polyethylene), oil filling property and normal temperature fluidity. The ethylene propylene diene rubber can be used for a long time at 120 ℃, and can be used for a short time or intermittently at 150-; if a proper anti-aging agent is added, the use temperature can be increased; the ethylene propylene diene monomer crosslinked by peroxide can be used under harsh conditions; the ethylene propylene diene monomer rubber has no crack for more than 150h under the conditions of ozone concentration of 50pphm and 30% of stretching.

(VI)

The outer surface of the skin layer 1003 is further coated with a thermal sensitive color changing layer 1005, wherein the change rule of the thermal sensitive color changing layer 1005 along with the temperature is as follows: with a low temperature rise, the color displayed by the thermal sensitive color changing layer 1005 gradually changes from dark color to light color, so that the influence of sunlight exposure on the temperature of the cable can be reduced to a certain extent.

This allows the effect of ambient temperature on the temperature of conductor 4000 to be further limited by the thermally-induced color-change coating (primarily to avoid elevated temperatures in the environment causing the temperature of conductor 4000 to rise).

The outer surface of the thermal discoloration layer 1005 is further coated with a transparent paint surface protection layer 1006, so that the thermal discoloration layer can be effectively protected from being scratched or peeled off due to mechanical friction.

Production equipment of an acid-resistant distributed photovoltaic power generation cable comprises a paying-off roller 3000, a first twisting device 3001, a first twisting device 3002, a first coating device 3003, a second coating device 3004, a third coating device 3005, a fourth coating device 3006, a fifth coating device 3007, a sixth coating device 3008, a first painting device 3009 and a second painting device 3010 which are sequentially arranged; the input end of the first twisting device 3002 is further provided with a wire coiling roller 3011, a lead wire 4100 is pre-wound on a wire uncoiling roller 3000, and a filling rope 1004 is pre-wound on the wire coiling roller 3011.

The number of the pay-off rollers 3000 is at least one, the pay-off rollers 3000 are distributed in a parallel mode, and the pay-off rollers 3000 and the wire coiling rollers 3011 are driven by a speed reducing motor 3012.

The output end of the first twisting device 3002 is further provided with an extrusion forming device 3013 to press the twisted wire into a standard cylindrical shape.

The output ends of the first painting device 3009 and the second painting device 3010 are respectively provided with a drying device 3014, so that the thermal sensitive color-changing coating and the paint surface protection layer 1006 can be dried quickly, and the production efficiency of the cable is accelerated.

at S1, a predetermined number of wires 4100 are twisted into a twisted wire by the first twisting device 3001.

S2, the filling rope 1004 is filled into the strand gap by the first twisting device 3002.

S3, the filling string 1004 and the stranded wire are extruded into a cylindrical shape by the extrusion molding apparatus 3013.

S4, the first coating device 3003 uniformly and tightly coats the electrical insulation layer 1001 on the stranded wire.

S5, the second coating device 3004 coats the electrically insulating layer 1001 with a soft sheath 1002 uniformly and tightly.

S6, the unidirectional heat dissipating layer 2100 is uniformly and tightly wrapped around the soft armor 1002 in S5 by the third wrapping device 3005.

S7, the thermal insulation layer 2200 is uniformly and tightly wrapped on the unidirectional heat dissipation layer 2100 by the fourth wrapping device 3006.

S8, the heat insulating layer 2200 is covered with a soft armor layer 1002 uniformly and densely again by the fifth covering device 3007.

S9, the skin layer 1003 is uniformly and tightly wrapped around the soft armor 1002 in S8 by the sixth wrapping device 3008.

S10, the outer surface of the skin layer 1003 is uniformly sprayed with the thermally induced discoloration coating by the first painting device 3009.

S11, the thermally responsive color changing coating material is dried by the drying means 3014 at the output of the first painting means 3009, thereby forming the thermally responsive color changing layer 1005.

S12, the outer surface of the thermal sensing color changing layer 1005 is uniformly sprayed with a protective varnish by the second varnishing device 3010.

S13, the protective varnish is dried by the drying device 3014 at the output of the second varnishing device 3010, thereby forming a varnish-side protective layer 1006.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims

1. The utility model provides an acid resistance distributing type photovoltaic power generation cable which characterized in that: comprises a conductor 4000, a protection component (1000) and a temperature control component (2000) which are coated outside the conductor 4000.

2. The acid-resistant distributed photovoltaic power generation cable of claim 1, wherein the protective component (1000) comprises an electrically insulating layer (1001), a soft armor layer (1002), and a skin layer (1003), and the temperature control component (2000) comprises a unidirectional heat dissipation layer (2100) and a thermal insulation layer (2200); the conductor 4000 is coated with an electric insulating layer (1001), a soft armor layer (1002), a one-way heat dissipation layer (2100), a heat insulation layer (2200), the soft armor layer (1002) and a skin layer (1003) in sequence.

3. The acid-resistant distributed photovoltaic power generation cable according to claim 2, wherein the conductor 4000 is any one of a single wire 4001 or a twisted wire formed by twisting a plurality of wires 4001.

4. The acid-resistant distributed photovoltaic power generation cable according to claim 2, wherein a flexible filling rope (1004) is filled between the electrical insulation layer (1001) and the conductor 4000;

the unidirectional heat dissipation layer (2100) is made of soft, transparent and heat-insulating PVC glass (2101), a heat-conducting reflection sheet (2102) is densely distributed in the PVC glass (2101), a reflection layer (2103) is plated on the surface, facing the outer end of the cable, of the reflection sheet (2102), the reflection layer (2103) is any one of gold foil, silver foil and aluminum foil, and a heat absorption layer (2104) is coated on the surface, facing the inner end of the cable, of the reflection sheet (2102);

the surface of the heat insulation layer (2200) is densely provided with through notches (2201), ports at two ends of each notch (2201) are provided with temperature memory alloy rods (2202) with the same critical temperature, and the length of each temperature memory alloy rod (2202) below the critical temperature is smaller than that above the critical temperature;

the skin layer (1003) is made of ethylene propylene diene monomer.

5. An acid-resistant distributed photovoltaic power generation cable according to claim 4, wherein the deformation amplitude of the temperature memory alloy rod (2202) of the notch (2201) near the outer end of the cable is smaller than that of the temperature memory alloy rod (2202) near the inner end of the cable, and the notch (2201) is still in a closed state only when the temperature memory alloy rod (2202) near the outer end of the cable is extended, and the notch (2201) is in an open state only when the temperature memory alloy rod (2202) near the inner end of the cable is extended;

the outer surface of the skin layer (1003) is further coated with a heat-induced discoloration layer (1005).

6. The acid-resistant distributed photovoltaic power generation cable according to claim 5, wherein the thermal-sensitive discoloration layer (1005) has a temperature variation law of: the thermo-sensitive color changing layer (1005) gradually changes the color from dark to light with low temperature rise.

7. The acid-resistant distributed photovoltaic power generation cable according to claim 6, wherein the outer surface of the heat-sensitive discoloration layer (1005) is further coated with a transparent finish protection layer (1006).

8. The production equipment of the acid-resistant distributed photovoltaic power generation cable according to any one of claims 1 to 7, which comprises an unwinding roller (3000), a first winding device (3001), a second winding device (3002), a first coating device (3003), a second coating device (3004), a third coating device (3005), a fourth coating device (3006), a fifth coating device (3007), a sixth coating device (3008), a first lacquering device (3010) (3009) and a second lacquering device which are sequentially arranged; the input end of the second twisting device (3002) is also provided with a wire coiling roller (3011), a wire 4001 is wound on the pay-off roller (3000) in advance, and a filling rope (1004) is wound on the wire coiling roller (3011) in advance.

9. The production equipment of the acid-resistant distributed photovoltaic power generation cable according to claim 8, wherein the number of the paying-off rollers (3000) is at least one, the paying-off rollers (3000) are distributed in parallel, and the paying-off rollers (3000) and the wire coiling rollers (3011) are driven by a speed reduction motor (3012);

the output end of the second winding device (3002) is also provided with an extrusion forming device (3014) (3013);

and the output ends of the first painting device (3010) (3009) and the second painting device are respectively provided with a drying device.

10. The use method of the production equipment for the acid-resistant distributed photovoltaic power generation cable according to any one of claims 8 to 9, characterized by comprising the following steps:

s1, twisting the conducting wires 4001 with the appointed number into stranded wires by a first twisting device (3001);

s2, filling the filling rope (1004) into the stranded wire gap through a second twisting device (3002);

s3, extruding the filling rope (1004) and the stranded wire into a cylindrical shape through extrusion forming devices (3014) (3013);

s4, uniformly and compactly wrapping the electric insulation layer (1001) on the stranded wire through the first wrapping device (3003);

s5, uniformly and compactly coating the electric insulation layer (1001) with a soft armor layer (1002) by a second coating device (3004);

s6, uniformly and tightly wrapping the unidirectional heat dissipation layer (2100) on the soft armor layer (1002) in the S5 by a third wrapping device (3005);

s7, uniformly and compactly wrapping the heat insulation layer (2200) on the one-way heat dissipation layer (2100) through a fourth wrapping device (3006);

s8, uniformly and compactly coating the heat insulation layer (2200) with a soft armor layer (1002) again by a fifth coating device (3007);

s9, wrapping the skin layer (1003) uniformly and tightly around the soft armor layer (1002) in S8 by a sixth wrapping means (3008);

s10, uniformly spraying thermal induction color-changing paint on the outer surface of the surface skin layer (1003) through a first painting device (3010) (3009);

s11, drying the thermal sensing color changing coating through a drying device at the output end of the first painting device (3010) (3009) so as to form a thermal sensing color changing layer (1005);

s12, uniformly spraying protective paint on the outer surface of the thermal induction color changing layer (1005) through a second painting device;

and S13, drying the protective paint through a drying device at the output end of the second painting device to form a paint surface protective layer (1006).