CN114843828A

CN114843828A - Wire cable with wire stripping and insulating integrative butt joint subassembly

Info

Publication number: CN114843828A
Application number: CN202210596822.5A
Authority: CN
Inventors: 薄亮; 龙文华; 王鹏聪
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-08-02

Abstract

The invention discloses an electric wire cable with a wire stripping and insulation integrated butt joint assembly, belonging to the technical field, and the electric wire cable with the wire stripping and insulation integrated butt joint assembly comprises a tinned wire core, wherein a protective layer is pressed outside the wire core, a cross-linked polyethylene sheath is pressed outside the heat-insulating layer, a butt joint mechanism is sleeved at the outer side end part of the cross-linked polyethylene sheath, the end part of the wire core can be clamped with the butt joint mechanism, and the two wire cores are electrically connected through the butt joint mechanism; the protective layer comprises a crosslinked polyethylene insulating layer, and the crosslinked polyethylene insulating layer is laminated outside the wire core. The wire core heat insulation and buffering device has the advantages of heat insulation and buffering of the wire core, avoiding of increasing of the temperature of the wire core and electric energy loss, improving of electric energy output power, avoiding of damage of the wire core caused by physical action, strong protection, integration of wire stripping, fixing and sealing, high working efficiency of workers, stable connection, long service cycle of the wire core and stable electric energy transmission.

Description

Wire cable with wire stripping and insulating integrative butt joint subassembly

Technical Field

The invention relates to the technical field of electric wires and cables, in particular to an electric wire and cable with a wire stripping and insulation integrated butt joint assembly.

Background

The photovoltaic cable is also a photovoltaic special cable, is mainly used in a photovoltaic power station, and 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. The characteristics of the photovoltaic cable are determined by the special insulating material and the special sheath material of the cable, which are called as crosslinked polyethylene, and after the cable is irradiated by an irradiation accelerator, the molecular structure of the cable material can be changed, so that the performance of the photovoltaic cable in various aspects is provided, and the high temperature resistance is higher than that of a common cable;

the photovoltaic cable comprises a wire core, a crosslinked polyethylene insulating layer and a crosslinked polyethylene sheath from inside to outside, the photovoltaic power generation is usually performed in an open area with sufficient sunlight, the cable is in a severe environment condition, the sunlight heat absorbed by the sheath can heat the wire core in a heat conduction mode, the resistance of the wire core is increased, the loss of the wire core to electric energy is increased, the wire core is easy to bend excessively in the cable installation process, the wire core is damaged, the electric energy efficiency is reduced, the supply shortage of the electric energy is realized, hundreds of photovoltaic cell panels are required to be installed in the photovoltaic power generation area, hundreds of photovoltaic cell panels are required to be connected through the photovoltaic cable, the wire core of the photovoltaic cable is formed by winding a plurality of fine wire cores, and during the connection, the insulating layer and the sheath need to be removed by using wire stripping pliers to expose the wire core, adopt patchcord connection method manual connection again, still need to use the insulating tape to insulate at last, multiple instrument is carried in photovoltaic power generation's installation, and staff's burden is big, and the installation is loaded down with trivial details, and is exposed to the sun along with the insulating tape by wind moreover, can ageing fracture, easily causes the sinle silk oxidation, and electric energy transport is obstructed, according to the problem that exists in above photovoltaic power generation, it is necessary to provide a thermal-insulated cable with butt joint.

Disclosure of Invention

First, technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide the wire cable with the wire stripping and insulation integrated butt joint assembly, which solves the problems of heat insulation and wire core buffering between a wire core and a sheath, avoids the increase of the temperature rise of the wire core and the increase of the electric energy consumption, has strong wire core protection, and adopts the wire stripping, fixing and sealing integrated butt joint mode, so that the working efficiency of workers is high and the connection is stable.

Second, technical scheme

In order to achieve the purpose, the invention provides the following technical scheme:

a wire cable with a wire stripping and insulation integrated butt joint assembly comprises tinned wire cores, wherein a protective layer is pressed on the outer portions of the wire cores, a cross-linked polyethylene sheath is pressed on the outer portion of a heat insulation layer, a butt joint mechanism is sleeved at the outer side end of the cross-linked polyethylene sheath, the end portions of the wire cores can be clamped with the butt joint mechanism, and the two wire cores are electrically connected through the butt joint mechanism;

the protective layer comprises a crosslinked polyethylene insulating layer, the crosslinked polyethylene insulating layer is pressed outside the wire core, a flame-retardant polypropylene layer is pressed outside the crosslinked polyethylene insulating layer, the cross section of the flame-retardant polypropylene layer is in a circular wavy shape, ceramic fiber paper is pressed outside the flame-retardant polypropylene layer, and the outside of the ceramic fiber paper and the inner wall of the crosslinked polyethylene sheath are pressed together;

the butt joint mechanism comprises a shell, conical threaded heads are arranged at the left end and the right end of the shell, the inner sides of the threaded heads are matched with the outer wall of the cross-linked polyethylene sheath, wires are pre-buried in the bottom of the shell along the left direction and the right direction, first clamping assemblies are arranged on the left side and the right side of the inner wall of the bottom of the shell, the two first clamping assemblies are electrically connected through the wires, a supporting frame is arranged in the middle of the top end of the shell, a baffle is arranged between the supporting frame and the shell, two cutting blades which are symmetrical front and back are arranged on the front inner wall and the back inner wall of the shell, a space is reserved between each cutting blade and the baffle, an upper cover which is attached to the shell is arranged on the left side and the right side of the top end of the supporting frame through the rotation of a pin shaft, the outer side structure of the upper cover is the same as that of the threaded heads, the contact surface of the shell and the upper cover have good sealing performance, and the clamping of the cross-linked polyethylene sheath is realized through the cooperative matching of the upper cover and the threaded heads, and a second clamping assembly corresponding to the first clamping assembly in position is installed on the inner side of the upper cover, and a threaded sleeve is screwed between the threaded head and the outer wall of the upper cover.

Preferably, two surfaces of the outward-pointing bulge of the flame-retardant polypropylene layer are both arc-shaped, and the elastomer material is added into the flame-retardant polypropylene layer.

Preferably, the inner top end of the cutting blade is an arc-shaped edge.

Preferably, first centre gripping subassembly includes the base, the pedestal mounting is in the inner wall bottom of shell, the inner wall bottom embedding of base have with wire electric connection's terminal, the first lug of a plurality of is installed from a left side to the right equidistance to the upper surface of terminal.

Preferably, the length of the inner cavity of the base is greater than or equal to the distance between the baffle and the cutting blade.

Preferably, the first bump is triangular through a lead angle.

Preferably, the second centre gripping subassembly includes the stop collar, the stop collar is installed in the inside of upper cover, the inner chamber left side packing of stop collar has sealed clay, the laminating of sealed clay right side has the film, and the film seals sealed clay at the stop collar inner chamber, the inner chamber slidable of stop collar is pegged graft and is had the clamp plate, and clamp plate and film bonding, a plurality of runner has been seted up to the outer wall of clamp plate equidistance all around, the right side wall of clamp plate is from last to installing the second lug the same with first lug shape to the equidistance down.

Preferably, the sealing mastic is an electrically-sealed insulating glue.

Preferably, the second bumps and the first bumps are arranged in a staggered manner.

Third, beneficial effect

Compared with the prior art, the invention has the advantages that:

1. through the matching of the crosslinked polyethylene insulating layer, the flame-retardant polypropylene layer and the ceramic fiber paper, the heat insulation and buffering are performed on the wire core, the phenomenon that the electric energy loss is increased due to the temperature rise of the wire core is avoided, the electric energy output power is improved, the wire core is prevented from being damaged due to the physical action, and the protection performance is high;

2. the fixed length cutting of sinle silk is carried out through the cooperation of baffle and cutting blade, revolves soon through the thread bush and twists and cover at thread head and upper cover, makes shell and upper cover closed, and first centre gripping subassembly cooperates the cooperation with the second centre gripping subassembly to sinle silk centre gripping location to can make sealed clay cover on the sinle silk, isolated air, consequently, possess the wire stripping, fix and sealed integration advantage, staff work efficiency is high, connects stably, the sinle silk life cycle is long, and electric energy is carried stably.

Drawings

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

FIG. 2 is a front sectional view of a protective layer according to the present invention;

FIG. 3 is a left side sectional view of the protective layer of the present invention;

FIG. 4 is a front sectional view of the docking mechanism of the present invention;

FIG. 5 is a schematic view of a first clamping assembly of the present invention;

FIG. 6 is a schematic view of a second clamping assembly of the present invention;

FIG. 7 is a front cross-sectional view of a second clamping assembly in accordance with the present invention.

The reference numbers in the figures illustrate:

1-wire core, 2-protective layer, 3-crosslinked polyethylene sheath, 4-butt joint mechanism, 21-crosslinked polyethylene insulating layer, 22-flame-retardant polypropylene layer, 23-ceramic fiber paper, 41-shell, 42-screw head, 43-wire, 44-first clamping component, 45-supporting frame, 46-baffle, 47-cutting blade, 48-upper cover, 49-second clamping component, 410-screw sleeve, 441-base, 442-terminal, 443-first lug, 491-limiting sleeve, 492-sealing daub, 493-film, 494-pressing plate, 495-flow channel and 496-second lug.

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. 1-7, the present invention provides a technical solution: a wire cable with a wire stripping and insulation integrated butt joint assembly comprises tinned wire cores 1, a protective layer 2 is pressed on the outside of each wire core 1, a cross-linked polyethylene sheath 3 is pressed on the outside of a heat insulation layer 2, the outer side end of each cross-linked polyethylene sheath 3 is sleeved with a butt joint mechanism 4, the end parts of the wire cores 1 can be clamped with the butt joint mechanisms 4, and the two wire cores 1 are electrically connected through the butt joint mechanisms 4;

the protective layer 2 comprises a crosslinked polyethylene insulating layer 21, the crosslinked polyethylene insulating layer 21 is pressed on the outer portion of the wire core 1, the crosslinked polyethylene insulating layer 21 plays an insulating protection role for the wire core 1, a flame-retardant polypropylene layer 22 is pressed on the outer portion of the crosslinked polyethylene insulating layer 21, the cross section of the flame-retardant polypropylene layer 22 is in a circular wavy shape, a certain gap is formed between the crosslinked polyethylene insulating layer 21 and the crosslinked polyethylene sheath 3, ceramic fiber paper 23 is pressed on the outer portion of the flame-retardant polypropylene layer 22, the outer portion of the ceramic fiber paper 23 is pressed with the inner wall of the crosslinked polyethylene sheath 3, the ceramic fiber paper 23 is made of aluminum silicate ceramic fiber cotton, and the crosslinked polyethylene sheath has the characteristics of fire resistance, high temperature resistance, heat insulation, insulation and the like, and can prevent absorbed heat from being transmitted to the wire core 1 by the crosslinked polyethylene sheath 3 and reduce the temperature of the wire core 1;

the butt joint mechanism 4 comprises a shell 41, tapered thread heads 42 are arranged at the left end and the right end of the shell 41, the inner sides of the thread heads 42 are matched with the outer wall of the crosslinked polyethylene sheath 3, wires 43 are pre-embedded in the bottom end of the shell 41 along the left direction and the right direction, first clamping assemblies 44 are arranged at the left side and the right side of the inner wall of the bottom end of the shell 41, the two first clamping assemblies 44 are electrically connected through the wires 43, a support frame 45 is arranged in the middle of the top end of the shell 41, the support frame 45 plays a role of supporting an upper cover 48, a baffle 46 is arranged between the support frame 45 and the shell 41, the baffle 46 is used for blocking the wire core 1, the position of the wire core 1 inserted into the shell 41 is limited, two cutting blades 47 which are symmetrical in the front and back direction are arranged on the front and back inner wall of the shell 41, a distance exists between the cutting blades 47 and the baffle 46, and the cutting blades 47 play a role of cutting the crosslinked polyethylene sheath 3 and the protective layer 2, the top left and right sides of support frame 45 all rotates through the round pin axle and installs upper cover 48 with the laminating of shell 41, the outside structure of upper cover 48 is the same with thread head 42, and shell 41 has good leakproofness with upper cover 48 contact surface, the centre gripping of crosslinked polyethylene sheath 3 is realized through the cooperation of upper cover 48 and thread head 42, the inboard of upper cover 48 is installed and is had the second centre gripping subassembly 49 corresponding with first centre gripping subassembly 44 position, thread head 42 and the outer wall spiro union of upper cover 48 have thread bush 410, can make and accomplish between shell 41 and the upper cover 48 and close.

Further, two faces of the outwards directional protruding of fire-retardant polypropylene layer 22 are the arc, and add elastomer material in the fire-retardant polypropylene layer 22, when the crosslinked polyethylene sheath 3 receives exogenic action to extrude fire-retardant polypropylene layer 22, fire-retardant polypropylene layer 22 self arcwall face takes place crooked, in case external force cancels, because the addition of elastomer, fire-retardant polypropylene layer 22 kick-backs under self elastic action, play the cushioning protection effect to line core 1, during buckling, receive the elastic action, hard buckling can not appear in line core 1.

Furthermore, the top end of the inner side of the cutting blade 47 is an arc-shaped blade, when the crosslinked polyethylene sheath 3 is pressed to the cutting blade 47 for cutting, the crosslinked polyethylene sheath 3 and the protective layer 2 can be cut off layer by using the arc-shaped blade of the cutting blade 47, and the labor is saved when a worker performs cutting operation.

Further, the first clamping assembly 44 includes a base 441, the base 441 is mounted at the bottom end of the inner wall of the housing 41, a terminal 442 electrically connected to the conductive wire 43 is embedded in the bottom end of the inner wall of the base 441, the terminal 442 and the conductive wire 43 cooperate to electrically connect the two cores 1, a plurality of first bumps 443 are mounted on the upper surface of the terminal 442 at equal intervals from left to right, and the first bumps 443 and the terminal 442 are made of the same material and have conductive capability.

Further, the length of the inner cavity of the base 441 is greater than or equal to the distance between the baffle 46 and the cutting blade 47, so that the length of the exposed wire core 1 after cutting is less than or equal to the length of the inner cavity of the base 441, and after the wire core 1 is placed in the base 441, the wire core 1 is prevented from being exposed from the base 441.

Further, the first bump 443 is triangular through a corner, and there is no sharp surface behind the corner of the first bump 443, so that the first bump 443 can prevent the core 1 from being cut off when the core 1 is clamped by the first bump 443.

Further, the second clamping assembly 49 includes a limiting sleeve 491, the limiting sleeve 491 is installed inside the upper cover 48, the sealing cement 492 is filled on the left side of the inner cavity of the limiting sleeve 491, a film 493 is attached to the right side of the sealing cement 492, the sealing cement 492 is sealed in the inner cavity of the limiting sleeve 491 by the film 493, the sealing cement 492 is sealed in the limiting sleeve 491 by the film 493, the sealing cement 492 is prevented from being dried and hardened when not used, a pressing plate 494 is slidably inserted into the inner cavity of the limiting sleeve 491, the pressing plate 494 is adhered to the film 493, the pressing plate 494 is made of an insulating material, a plurality of flow channels 495 are equidistantly formed around the outer wall of the pressing plate 494, the sealing cement 492 is conveyed through the flow channels 495, and second protruding blocks 496 having the same shape as the first protruding blocks 496 are equidistantly installed on the right side wall of the pressing plate 494 from top to bottom.

Further, the sealing mastic 492 is an electrically sealing insulating glue, the sealing mastic 492 covers the wire core 1, and the wire core 1 is not in contact with oxygen, so as to prevent oxidation of the wire core 1.

Furthermore, the second protrusion 496 and the first protrusion 443 are staggered, so that when the wire core 1 is clamped, the wire core 1 is bent, and the clamping stability is improved.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

Firstly, the core 1 and the crosslinked polyethylene sheath 3 are separated by the flame-retardant polypropylene layer 22 and the ceramic fiber paper 23, sunlight heat absorbed by the crosslinked polyethylene sheath 3 cannot be transmitted to the core 1, the resistance of the core 1 is prevented from increasing, the elasticity of the flame-retardant polypropylene layer 22 can be improved by the elastomer, once the crosslinked polyethylene sheath 3 is pressed by external force or bent, the radian of an arc surface at the bulge of the flame-retardant polypropylene layer 22 under the action of the external force is increased, the core 1 cannot be directly pressed, and the core 1 is protected;

step two, during butt joint, the wire core 1 is abutted against the baffle 46, the crosslinked polyethylene sheath 3 is pressed downwards, the crosslinked polyethylene sheath 3, the ceramic fiber paper 23, the flame-retardant polypropylene layer 22 and the insulating polyethylene insulating layer 21 are gradually cut by the cutting blade 47 with the help of the arc-shaped cutting edge of the cutting blade 47, when the wire core 1 is positioned at the centers of the two cutting blades 47, the shell 41 is rotated to enable the cutting blade 47 to rotate around the wire core 1 to realize annular cutting, then the shell 41 is pulled leftwards to enable the cut crosslinked polyethylene sheath 3 and the protective layer 2 to be stripped from the wire core 1, and the purpose of peeling off the wire core 1 is achieved;

step three, the thread bushing 410 is sleeved on the cross-linked polyethylene sheath 3, the exposed wire core 1 is placed on the surface of the first bump 443, the upper cover 48 is rotated to be close to the shell 41, the thread bushing 410 is gradually screwed on a thread joint formed by the thread head 42 and the upper cover 48, the shell 41 and the upper cover 48 are gradually close to each other, the first projection 443 and the second projection 496 clamp the wire core 1, the second projection 496 moves into the limiting sleeve 491 to press the film 493, the sealing mastic 492 is pressed to force the film 493 to break, the sealing mastic 492 flows along the flow channel 495, the sealing mastic 492 fills the space formed by the base 441 and the limiting sleeve 491 until the thread sleeve 410 is completely screwed on the thread head 42, the first projection 443 and the second projection 496 clamp and position the wire core 1, the sealing mastic 492 wraps the wire core 1 to prevent the wire core 1 from being oxidized, and the conducting wire 43 plays a role of two terminals 442 to achieve the aim of butt joint;

in conclusion, the cable core 1 can insulate heat and buffer, the temperature of the cable core 1 is prevented from rising, or the cable core 1 is prevented from being damaged due to compression, the cable core 1 is high in protectiveness, wire stripping, positioning and sealing can be achieved without intervention of an electrician tool, and the cable core 1 has the advantages of being convenient to butt joint and install, high in anti-oxidation capability and stable in power transmission.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides an electric wire and cable with integrative butt joint subassembly of wire stripping and insulation, includes tin-plated sinle silk (1), its characterized in that: the cable comprises two cable cores (1), a protective layer (2) is pressed outside the cable cores (1), a cross-linked polyethylene sheath (3) is pressed outside the heat-insulating layer (2), a butt joint mechanism (4) is sleeved at the outer side end of the cross-linked polyethylene sheath (3), the end parts of the cable cores (1) can be clamped with the butt joint mechanism (4), and the two cable cores (1) are electrically connected through the butt joint mechanism (4);

the protective layer (2) comprises a crosslinked polyethylene insulating layer (21), the crosslinked polyethylene insulating layer (21) is pressed outside the wire core (1), a flame-retardant polypropylene layer (22) is pressed outside the crosslinked polyethylene insulating layer (21), the cross section of the flame-retardant polypropylene layer (22) is in a circular wavy shape, ceramic fiber paper (23) is pressed outside the flame-retardant polypropylene layer (22), and the outside of the ceramic fiber paper (23) and the inner wall of the crosslinked polyethylene sheath (3) are pressed together;

docking mechanism (4) include shell (41), both ends all are provided with and are conical thread head (42) about shell (41), and thread head (42) inboard is identical with crosslinked polyethylene sheath (3) outer wall, the inside pre-buried wire (43) that has of left right direction of following of bottom of shell (41), first centre gripping subassembly (44) are all installed to the bottom inner wall left and right sides of shell (41), and two first centre gripping subassemblies (44) realize electric connection through wire (43), the top mid-mounting of shell (41) has support frame (45), install baffle (46) between support frame (45) and shell (41), two cutting blade (47) of symmetry around the inner wall is installed to shell (41), and has the interval between cutting blade (47) and baffle (46), the top left and right sides of support frame (45) all rotates through the round pin axle and installs upper cover (48) of laminating with shell (41) The outer side structure of the upper cover (48) is the same as the thread head (42), the contact surface of the shell (41) and the upper cover (48) has good sealing performance, the clamping of the cross-linked polyethylene sheath (3) is realized through the cooperative matching of the upper cover (48) and the thread head (42), the second clamping component (49) corresponding to the first clamping component (44) is installed on the inner side of the upper cover (48), and the thread head (42) and the outer wall of the upper cover (48) are in threaded connection with a thread sleeve (410).

2. The electrical wire cable with integral stripping and insulation butt joint assembly as claimed in claim 1, wherein: the two surfaces of the outward-pointing bulge of the flame-retardant polypropylene layer (22) are arc-shaped, and an elastomer material is added into the flame-retardant polypropylene layer (22).

3. The electrical wire cable with integral stripping and insulation butt joint assembly as claimed in claim 1, wherein: the top end of the inner side of the cutting blade (47) is an arc-shaped blade.

4. The electrical wire cable with integral stripping and insulation butt joint assembly as claimed in claim 1, wherein: the first clamping assembly (44) comprises a base (441), the base (441) is installed at the bottom end of the inner wall of the shell (41), a terminal (442) electrically connected with the conducting wire (43) is embedded in the bottom end of the inner wall of the base (441), and a plurality of first bumps (443) are installed on the upper surface of the terminal (442) at equal intervals from left to right.

5. The electrical wire cable with integral stripping and insulation butt joint assembly as set forth in claim 4, wherein: the length of the inner cavity of the base (441) is more than or equal to the distance between the baffle (46) and the cutting blade (47).

6. The electrical wire cable with integral stripping and insulation butt joint assembly as set forth in claim 4, wherein: the first bump (443) is triangular in shape passing through a lead angle.

7. The electrical wire cable with integral stripping and insulation butt joint assembly as claimed in claim 1, wherein: the second clamping assembly (49) comprises a limiting sleeve (491), the limiting sleeve (491) is mounted inside the upper cover (48), sealing cement (492) is filled in the left side of an inner cavity of the limiting sleeve (491), a thin film (493) is attached to the right side of the sealing cement (492), the sealing cement (492) is sealed in the inner cavity of the limiting sleeve (491) through the thin film (493), a pressing plate (494) is slidably inserted into the inner cavity of the limiting sleeve (491), the pressing plate (494) is bonded with the thin film (493), a plurality of flow channels (495) are equidistantly formed in the periphery of the outer wall of the pressing plate (494), and second convex blocks (496) with the same shape as the first convex blocks (496) are mounted on the right side wall of the pressing plate (494) from top to bottom in an equidistant manner.

8. The electrical wire cable with integral stripping and insulation butt joint assembly as claimed in claim 7, wherein: the sealing mastic (492) is an electrically sealing insulating paste.

9. The electrical wire cable with integral stripping and insulation butt joint assembly as set forth in claim 6, wherein: the second bumps (496) are arranged in a staggered manner with the first bumps (443).