阅读说明：本技术 一种海上用高抗压的光伏电缆 (Photovoltaic cable of marine high resistance to compression ) 是由 李万松 叶磊 于 2020-07-09 设计创作，主要内容包括：本发明公开了一种海上用高抗压的光伏电缆,包括电缆本体,电缆本体包括缆芯和包覆在缆芯上的电缆护套,电缆护套从内之外依次包括耐磨层、导热层、疏水层、内护层和外护层,耐磨层和导热层之间设有抗压缓冲机构,抗压缓冲机构包括等间距环设在耐磨层内壁上的固定凸起以及分别固定在固定凸起左右两侧壁上并与固定凸起侧壁滑动连接的固定滑杆,每个固定滑杆远离固定凸起的一端倾斜固定在耐磨层外壁上,耐磨层位于每相邻两个固定滑杆之间均开设有条形散热孔,导热层内部为中空结构,导热层内壁环设有与条形散热孔一一对应的条形导热口,条形导热口设有呼吸阀体,本发明通过抗压缓冲机构和呼吸阀体的配合下使得该电缆具有高抗压性能和高散热性能。(The invention discloses a marine high-compression-resistance photovoltaic cable, which comprises a cable body, wherein the cable body comprises a cable core and a cable sheath coated on the cable core, the cable sheath sequentially comprises a wear-resistant layer, a heat-conducting layer, a hydrophobic layer, an inner protective layer and an outer protective layer from inside to outside, a compression-resistance buffer mechanism is arranged between the wear-resistant layer and the heat-conducting layer, the compression-resistance buffer mechanism comprises fixed bulges which are annularly arranged on the inner wall of the wear-resistant layer at equal intervals and fixed slide bars which are respectively fixed on the left side wall and the right side wall of the fixed bulges and are in sliding connection with the side walls of the fixed bulges, one end of each fixed slide bar, which is far away from the fixed bulges, is obliquely fixed on the outer wall of the wear-resistant layer, strip-shaped heat dissipation holes are formed between every two adjacent fixed slide bars, the cable has high pressure resistance and high heat dissipation performance through the matching of the pressure-resistant buffer mechanism and the breathing valve body.)

1. The utility model provides a photovoltaic cable of marine high resistance to compression, includes the cable body, the cable body includes cable core and the cable sheath of cladding on the cable core, and the cable sheath has filler (2) except that the clearance of cable core in, the cable core includes many wires (1), its characterized in that: the cable sheath comprises a wear-resistant layer (5), a heat-conducting layer (6), a hydrophobic layer (7), an inner protection layer (8) and an outer protection layer (9) in sequence from the inside to the outside, a compression-resistant buffer mechanism is arranged between the wear-resistant layer (5) and the heat-conducting layer (6), the compression-resistant buffer mechanism comprises fixed bulges (3) which are annularly arranged on the inner wall of the wear-resistant layer (5) at equal intervals and fixed slide bars (4) which are respectively fixed on the left side wall and the right side wall of the fixed bulges (3) and are in sliding connection with the side walls of the fixed bulges (3), each fixed slide bar (4) is obliquely fixed on the outer wall of the wear-resistant layer (5) at one end far away from the fixed bulges (3), the cross section of each fixed bulge (3) is of an isosceles trapezoid structure, one end of each fixed bulge (3) close to the wear-resistant layer (5) is the top end, one end of each, wear-resisting layer (5) are located and all offer bar louvre (51) parallel with cable body length direction along its thickness between per adjacent two fixed slide bar (4), heat-conducting layer (6) inside is hollow structure, and is equipped with heat conduction metal dictyosome (62) in heat-conducting layer (6), heat-conducting layer (6) inner wall ring is equipped with bar heat conduction mouth (61) with bar louvre (51) one-to-one, and bar heat conduction mouth (61) are equipped with breather valve body (63).

2. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 1, wherein: the fixed bulges (3) are distributed at equal intervals along the direction of the cable body, the distance between the head and the tail of every two adjacent fixed bulges (3) is 0.5-2cm, and the fixed bulges (3) are processed by hard PVC materials.

3. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 1 or 2, wherein: the left side and the right side of the fixing protrusion (3) are inclined planes, the two inclined planes are respectively and evenly provided with a fixing sliding chute (31) along the respective length direction, a fixing sliding block (41) used for fixing the fixing sliding rod (4) is connected in each fixing sliding chute (31) in an sliding mode, and the fixing sliding block (41) is made of rubber materials.

4. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 1, wherein: the breather valve body (63) is of an X-shaped structure consisting of two sealing pieces of a C-shaped structure, the middle side walls of the two sealing pieces are mutually attached, and the outer wall of the bent part at the bottom of each sealing piece is in contact with the outer wall of the wear-resistant layer (5).

5. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 4, wherein: each breather valve body (63) is internally distributed with a reinforcing net (632), and the reinforcing net (632) is woven by metal wires or fiber yarn ropes.

6. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 4, wherein: strip-shaped notches (631) are formed in the bending part at the bottom of each sealing piece at equal intervals along the direction of the cable body.

7. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 1, wherein: the heat conductive metal mesh (62) is made of a metallic aluminum material.

8. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 1, wherein: the wear-resistant layer (5) is made of a chloroprene rubber material.

9. The photovoltaic cable with high pressure resistance and high temperature resistance for offshore use of claim 1, wherein: the gap between the heat conduction layer (6) and the wear-resistant layer (5) is filled with a buffering air bag body (10), and the buffering air bag body (10) is made of silica gel materials.

Technical Field

The invention relates to the technical field of cables, in particular to a high-pressure-resistant photovoltaic cable for sea.

Background

The marine photovoltaic cable is used for a power connection assembly for marine photovoltaic power generation. The cable floats on the sea through floating the weight, gives excavating equipment with electric power transmission, and in such use occasion, often will stand strong ultraviolet irradiation etc. and seriously corrode outward, still need blow through of big wind speed and wave and beat, consequently, marine cable's compressive property need further promote, and current salt fog photovoltaic cable's of preventing radiating effect is relatively poor moreover, can't obtain cooling down fast and can make the current-carrying capacity of cable descend to influence the stability of cable.

Disclosure of Invention

The invention aims to provide a photovoltaic cable with high pressure resistance for sea so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a photovoltaic cable for marine high compression resistance comprises a cable body, wherein the cable body comprises a cable core and a cable sheath coated on the cable core, a filler is filled in a gap of the cable sheath except the cable core, the cable core comprises a plurality of wires, the cable sheath sequentially comprises a wear-resistant layer, a heat-conducting layer, a hydrophobic layer, an inner protective layer and an outer protective layer from inside to outside, a compression-resistant buffer mechanism is arranged between the wear-resistant layer and the heat-conducting layer, the compression-resistant buffer mechanism comprises fixed bulges annularly arranged on the inner wall of the wear-resistant layer at equal intervals and fixed slide bars which are respectively fixed on the left side wall and the right side wall of the fixed bulges and are in sliding connection with the side walls of the fixed bulges, one end of each fixed slide bar, which is far away from the fixed bulges, is obliquely fixed on the outer wall of the wear-resistant layer, the cross section of each fixed bulge is, the length of the top end of each fixing protrusion is smaller than the bottom end of each fixing protrusion, the wear-resistant layer is located between every two adjacent fixing sliding rods and is provided with strip-shaped heat dissipation holes parallel to the length direction of the cable body along the thickness of the wear-resistant layer, the heat conduction layer is internally provided with a hollow structure and is internally provided with a heat conduction metal meshed body, the inner wall of the heat conduction layer is annularly provided with strip-shaped heat conduction holes in one-to-one correspondence with the strip-shaped heat dissipation holes, and the strip.

Preferably, a plurality of fixing protrusions are distributed at equal intervals along the direction of the cable body, the distance between the head and the tail of every two adjacent fixing protrusions is 0.5-2cm, and the fixing protrusions are made of hard PVC materials.

Preferably, the left side and the right side of the fixing protrusion are inclined planes, the two inclined planes are respectively and evenly provided with a fixing sliding chute along the respective length direction, a fixing sliding block used for fixing the fixing sliding rod is connected in each fixing sliding chute in a sliding mode, and the fixing sliding block is made of rubber materials.

Preferably, the breather valve body is the "X" type structure of constituteing by the gasket of two "C" type structures, and the middle lateral wall of two gaskets laminates each other, two the outer wall and the wear-resisting layer outer wall contact of the kink of gasket bottom.

Preferably, a reinforcing net is distributed in each breather valve body, and the reinforcing net is woven by metal wires or fiber yarn ropes.

Preferably, the bending part at the bottom of each sealing sheet is provided with strip-shaped notches at equal intervals along the direction of the cable body.

Preferably, the heat conductive metal mesh is made of a metallic aluminum material.

Preferably, the wear layer is made of a neoprene material.

Preferably, the clearance department between heat-conducting layer and the wearing layer is filled with the buffering gas utricule, and the buffering gas utricule is the silica gel material.

Compared with the prior art, the invention has the beneficial effects that:

(1) the compression-resistant buffer mechanism comprises fixed bulges which are annularly arranged on the inner wall of the wear-resistant layer at equal intervals and fixed slide bars which are respectively fixed on the left side wall and the right side wall of the fixed bulges and are in sliding connection with the side walls of the fixed bulges, one end of each fixed slide bar, which is far away from the fixed bulges, is obliquely fixed on the outer wall of the wear-resistant layer, the cross section of each fixed bulge is of an isosceles trapezoid structure, one end, which is close to the wear-resistant layer, of each fixed bulge is a top end, one end, which is far away from the wear-resistant layer, of each fixed bulge is a bottom end, the length of the top end of each fixed bulge is smaller than that of the bottom end of each fixed bulge, the left side and the right side of each fixed bulge are provided with inclined planes, the two inclined planes are uniformly provided, fixed slide bar moves to one side at heat-conducting layer place along fixed bellied inclined plane under the cooperation of fixed slider with fixed spout, extrudees the buffering gasbag body simultaneously to play the effect of buffering to the cable body, and then protect the destruction of avoiding external effort to the inside wire of cable body effectively, improved the compressive property of cable.

(2) In the invention, the wear-resistant layer is positioned between every two adjacent fixed sliding rods and is provided with strip-shaped heat dissipation holes parallel to the length direction of the cable body along the thickness of the wear-resistant layer, the interior of the heat conduction layer is of a hollow structure, a heat conduction metal reticular body is arranged in the heat conduction layer, the inner wall of the heat conduction layer is annularly provided with strip-shaped heat conduction ports corresponding to the strip-shaped heat dissipation holes one by one, the strip-shaped heat conduction ports are provided with breathing valve bodies, the breathing valve bodies are of an X-shaped structure consisting of two sealing sheets of a C-shaped structure, the middle side walls of the two sealing sheets are mutually attached, the outer walls of the bending parts at the bottoms of the two sealing sheets are contacted with the outer wall of the wear-resistant layer, strip-shaped notches are arranged at equal intervals along the direction of the cable body at, two sealing sheets on the breathing valve body are compressed, in the process of compressing the two corresponding sealing sheets, one end of the two sealing sheets contacting with the wear-resistant layer is respectively moved to a fixed sliding rod close to the two sealing sheets through a strip-shaped notch at the bottom of the two sealing sheets (one end of the two sealing sheets contacting with the wear-resistant layer is opened), and then the position where the two sealing sheets are originally attached is opened, namely the breathing valve body is opened, so that strip-shaped heat dissipation holes on the wear-resistant layer are communicated with an inner cavity of the heat conduction layer through the breathing valve body, therefore, heat generated when a lead in the cable body works enters the inner cavity of the heat conduction layer through the strip-shaped heat dissipation holes, the breathing valve body and the strip-shaped heat conduction holes and is quickly transmitted to the hydrophobic layer through a heat conduction metal mesh body in the heat conduction layer, and then the hydrophobic layer is, the compression-resistant buffer mechanism is matched with the breathing valve body, so that heat generated in the cable body is quickly transferred to the external environment, the heat dissipation effect is improved, and the stability of the cable is ensured; after the external acting force disappears, the extruded buffering air bag body recovers to the initial state, and the compression-resistant buffering mechanism and the breathing valve body also recover to the initial state in the process of recovering the buffering air bag body, so that the intermittent heat dissipation function is realized.

Drawings

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

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a cross-sectional view of the structure at B in FIG. 1;

fig. 4 is a schematic structural view of a breather valve body.

In the figure: 1. a wire; 2. a filler; 3. a fixed protrusion; 31. fixing the chute; 4. fixing the sliding rod; 41. fixing the sliding block; 5. a wear layer; 51. strip-shaped heat dissipation holes; 6. a heat conductive layer; 61. a strip-shaped heat conducting port; 62. a heat conductive metal mesh; 63. a breather valve body; 631. a strip-shaped notch; 632. a reinforcing mesh; 7. a hydrophobic layer; 8. an inner protective layer; 9. an outer jacket; 10. a buffer airbag body.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: the utility model provides a photovoltaic cable of marine high resistance to compression, includes the cable body, the cable body includes cable core and the cable sheath of cladding on the cable core, and the cable sheath is filled with filler 2 in the clearance except the cable core, filler 2 is the filling rope of being woven by the bamboo fibre, and the filling rope that the bamboo fibre was woven has better wearability and gas permeability, the cable core includes many wires 1, the cable body, the cable sheath includes many wires 1The sheath includes wearing layer 5, heat-conducting layer 6, hydrophobic layer 7, interior sheath 8 and outer sheath 9 from inside to outside in proper order, interior sheath 8 is made by the PET material for interior sheath 8 has good water, gas, oily performance, heat resistance and ageing resistance, and outer sheath 9 is made by PPEK material, and its heat-resistant type is stable, and resistant irradiation is not less than 10⁶Gy, the heat resistance and the radiation resistance of the cable are improved, so that the service life of the cable body is prolonged, a compression-resistant buffer mechanism is arranged between the wear-resistant layer 5 and the heat-conducting layer 6, the compression-resistant buffer mechanism comprises fixed protrusions 3 which are annularly arranged on the inner wall of the wear-resistant layer 5 at equal intervals, and fixed slide bars 4 which are respectively fixed on the left side wall and the right side wall of the fixed protrusions 3 and are in sliding connection with the side walls of the fixed protrusions 3, one end, far away from the fixed protrusions 3, of each fixed slide bar 4 is obliquely fixed on the outer wall of the wear-resistant layer 5, the cross section of each fixed protrusion 3 is of an isosceles trapezoid structure, one end, close to the wear-resistant layer 5, of each fixed protrusion 3 is a top end, one end, far away from the wear-resistant layer 5, of each fixed protrusion 3 is a bottom end, the length of the top end of each fixed protrusion, the inside hollow structure that is of heat-conducting layer 6, and be equipped with heat conduction metal dictyosome 62 in the heat-conducting layer 6, the inner wall of heat-conducting layer 6 encircles and is equipped with the bar heat conduction mouth 61 with bar louvre 51 one-to-one, and bar heat conduction mouth 61 is equipped with breather valve body 63.

Further, the fixed protrusion 3 has a plurality of along the equidistant distribution of cable body direction, and the distance between every two adjacent fixed protrusion 3 heads and tails is 0.5-2cm, fixed protrusion 3 is formed by processing stereoplasm PVC material, owing to need the cable body crooked at the in-process of laying the cable body, consequently, can also strengthen the mechanical strength of cable body under the prerequisite of guaranteeing that the cable body has certain crooked through a plurality of fixed protrusion 3.

Further, the 3 left and right sides of stationary hump are the inclined plane, and two inclined planes have all evenly seted up fixed spout 31 along respective length direction, and every fixed spout 31 internal sliding connection one has the fixed slider 41 who is used for fixed slide bar 4, fixed slider 41 is made by the rubber material, and when the cable body received external effort, the cable body received the extrusion, and at this moment, fixed slide bar 4 slided along fixed hump 3's lateral wall under the cooperation through fixed slider 41 and fixed spout 31, played the effect of buffering resistance to compression.

Further, breather valve body 63 is the "X" type structure of constituteing by the gasket of two "C" type structures, and the middle lateral wall of two gaskets is laminated each other, two the outer wall and the 5 outer wall contacts of wearing layer of the kink of gasket bottom, the gasket can be formed by rubber materials processing such as silica gel, when the cable body does not receive external effort, laminates between two gaskets to close through the bar louvre 51 on the wearing layer 5, prevent that there is steam to corrode wire 1 from the external inboard that enters into wearing layer 5 through bar louvre 51 through breather valve body 63.

Furthermore, a reinforcing net 632 is distributed in each breather valve 63, and the reinforcing net 632 is woven by metal wires or fiber yarn ropes, so that the mechanical strength of the breather valve 63 is improved.

Further, every the kink of gasket bottom has seted up bar breach 631 along cable body direction equidistant, when the cable body received external impact force, heat-conducting layer 6 is close to wearing layer 5, when being close to, breather valve body 63 is compressed, under the effect of bar breach 631, make the one end of two gaskets and the 5 contacts of wearing layer be close to the fixed slide bar 4 that corresponds separately (i.e. the bottom of two gaskets is opened), at this moment, the lateral wall of two sealed pad facies laminatings opens, make bar louvre 51 on the wearing layer 5 pass through breather valve body 63 and 6 inner chambers of heat-conducting layer intercommunication, thereby make the heat that wire 1 produced pass through bar louvre 51 and breather valve body 63 in proper order and enter into 6 inner chambers of heat-conducting layer and transmit to the environment outside of cable body fast by the heat conduction metal reticulate body 62 in the 6 inner chambers of heat-conducting.

Further, the heat-conducting metal mesh 62 is made of a metal aluminum material, and the metal aluminum material has strong heat conduction and heat dissipation effects, so that heat entering the inner cavity of the heat-conducting layer 6 is rapidly transmitted to the environment outside the cable body through the heat-conducting metal mesh 62 and the hydrophobic layer 7, the inner protective layer 8 and the outer protective layer 9 in sequence.

Furthermore, the wear-resistant layer 5 is made of a chloroprene rubber material, so that the wear-resistant layer 5 has the characteristics of high tensile strength, good heat resistance, aging resistance and water resistance, excellent flame retardance and good chemical stability.

Further, the clearance between heat-conducting layer 6 and wearing layer 5 is filled with buffering gasbag body 10, and buffering gasbag body 10 is the silica gel material, and counterpressure buffer gear plays the effect of buffering and reseing.

The working principle is as follows: when the cable body floats on the water surface, the cable body is often impacted by strong wind or sea waves. When the cable body is impacted by external action, under the action of the compression-resistant buffer mechanism, the fixed slide bar 4 moves to one side of the heat conducting layer 6 along the inclined plane of the fixed bulge 3 under the matching of the fixed slide block 41 and the fixed sliding chute 31, and simultaneously the buffer air bag body 10 is extruded, so that the cable body is buffered, the wires 1 in the cable body are effectively protected from being damaged by external action force, the compression resistance of the cable is improved, meanwhile, the distance between the heat conducting layer 6 and the wear-resistant layer 5 is reduced under the action of the compression-resistant buffer mechanism, two sealing sheets on the breather valve body 63 are compressed when the heat conducting layer 6 is close to the wear-resistant layer 5, and the ends, contacted with the wear-resistant layer 5, of the two corresponding sealing sheets move to the fixed slide bar 4 close to the wear-resistant layer 5 respectively through the strip-shaped notch 631 at the bottom of the two sealing sheets (the ends, contacted with the wear-resistant layer 5, of, so that the position where the two sealing sheets are originally jointed is opened, namely the breather valve body 63 is opened, so that the strip-shaped heat dissipation hole 51 on the wear-resistant layer 5 is communicated with the inner cavity of the heat conduction layer 6 through the breather valve body 63, therefore, the heat generated by the wire 1 in the cable body during operation enters the inner cavity of the heat conduction layer 6 through the strip-shaped heat dissipation hole 51, the breathing valve 63 and the strip-shaped heat conduction port 61 in sequence, is rapidly transmitted to the hydrophobic layer 7 through the heat conduction metal mesh body 62 in the heat conduction layer 6, and is transmitted to the environment outside the cable body through the inner protection layer 8 and the outer protection layer 9 in sequence by the hydrophobic layer 7, therefore, under the impact of external acting force and the cooperation of the compression-resistant buffer mechanism and the breathing valve body 63, the heat generated in the cable body is quickly transferred to the external environment, so that the heat dissipation effect is improved, and the stability of the cable is ensured; after the external effort disappears, by extruded buffering gas utricule 10 initial state that resumes, resume ground in-process at buffering gas utricule 10 and make resistance to compression buffer gear and breather valve body 63 also resume to initial state, realize the radiating function of intermittent type formula, thereby make breather valve body 63 close, simultaneously, when not receiving external effort, can prevent hydrophobic layer 7, interior sheath 8 and outer sheath 9 when taking place the seepage, the sea water damages wire 1 in the cable body through breather valve body 63 entering.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.