CN110444319B

CN110444319B - Distributed photovoltaic cable

Info

Publication number: CN110444319B
Application number: CN201910597534.XA
Authority: CN
Inventors: 魏伟健
Original assignee: Shuangdeng Cable Co Ltd
Current assignee: Shuangdeng Cable Co., Ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-11-27
Anticipated expiration: 2039-07-04
Also published as: CN110444319A

Abstract

The invention provides a distributed photovoltaic cable, which structurally comprises a first cable section, a photovoltaic cable high-reduction cross-connecting device, a tail cable section and an inner core covering layer, wherein the right end of the first cable section is installed inside the left end of the photovoltaic cable high-reduction cross-connecting device in an embedded mode, the main protective covering layer is disconnected and interrupted, cables are locked through a high-reduction inserting and sealing mechanism arranged inside a receiving sleeve and an inserting sleeve, the cables are fixed with an inserting and leading mechanism through the stamping force generated when the cables are inserted, the tight covering strip is pulled and braked through the tight covering strip, the cables are locked, connecting core strips at two ends are in contact connection with an insulating protective cover, the connecting core strips are in extrusion and rolling contact through a guiding and pressing mechanism, so that the connecting core strips are located in a local area where two photovoltaic cables are connected, no local weakening fault occurs, and the function continuity of the photovoltaic cable is ensured, the service life of the cable can be prolonged.

Description

Distributed photovoltaic cable

Technical Field

The invention belongs to the field of cables, and particularly relates to a distributed photovoltaic cable.

Background

In the process of distributed installation of the photovoltaic cable, because the photovoltaic cable is arranged in a photovoltaic power generation area, the high-temperature resistance, the waterproof and corrosion-resistant capability of an outer jacket layer of the photovoltaic cable is stronger, but because the cable is limited by photovoltaic power generation apparatuses and the installation of a field during distributed installation, the connection and installation of two or even a plurality of photovoltaic power generation apparatuses are often not completed due to the fact that the length of a single end of the cable is not enough.

Based on the above description, the inventor finds that the existing distributed photovoltaic cable mainly has the following disadvantages, such as:

because during its distributed installation, because the cable receives the restriction of photovoltaic power generation apparatus and the installation restriction in place, often appear because the single-ended length of cable is not enough to accomplish the connection installation of two or even a plurality of photovoltaic power generation apparatus to need to carry out the continuation of photovoltaic cable usually, and it adopts insulating tape to separate the rolling when continuing to connect, then carry out multi-level bundle and connect, appear breaking and connecting as its main lag layer, all can locally appear the fault of weakening to its high temperature resistant and waterproof corrosion-resistant ability that has, thereby influence the life of whole cable very easily.

Disclosure of Invention

In order to solve the technical problems, the invention provides a distributed photovoltaic cable, which aims to solve the problem that the service life of the whole cable is easily influenced because the cable is limited by photovoltaic power generation apparatuses and sites during distributed installation, the connection and installation of two or even a plurality of photovoltaic power generation apparatuses often occur because the length of a single end of the cable is not enough, so that the photovoltaic cable is generally required to be connected, and insulation tapes are adopted to separate and combine the cables during connection, then multi-level binding is carried out, the main protective sleeve layer is disconnected, and the high-temperature resistance, the water resistance and the corrosion resistance of the cable can locally generate weak faults, so that the service life of the whole cable is easily influenced.

Aiming at the defects of the prior art, the purpose and the effect of the distributed photovoltaic cable are achieved by the following specific technical means: the utility model provides a distributed photovoltaic cable, its structure includes first cable section, photovoltaic cable high reduction handing-over device, tail cable section, inner core covering, first cable section right-hand member is installed inside photovoltaic cable high reduction handing-over device left end through the mode of embedding, tail cable section is connected with first cable section through photovoltaic cable high reduction handing-over device, the inside inner core covering that is equipped with of tail cable section.

The photovoltaic cable high-restoration handover device comprises an inserting sleeve, a high-restoration inserting sealing mechanism, a receiving sleeve, a point clamping connecting ring and a separating ring, wherein the inserting sleeve and the receiving sleeve are mechanically connected together through the point clamping connecting ring, the outer annular surface of the separating ring is fixedly connected to the inner surface of the inserting sleeve in an electric welding mode, and the high-restoration inserting sealing mechanism is fixedly mounted inside the inserting sleeve.

Preferably, the high-reduction plug-in sealing mechanism comprises a heat insulation ring, a fastening tape, a plug-in leading tape mechanism, an internal division resistance strip and a photovoltaic cable transfer mechanism, wherein the heat insulation ring and the internal division resistance strip are in the same axis, the photovoltaic cable transfer mechanism is connected with the internal division resistance strip, the bottom end of the plug-in leading tape mechanism is installed on the outer surface of the internal division resistance strip in an embedded mode, the fastening tape is movably connected with the plug-in leading tape mechanism, binding pull wires penetrate through the side surfaces of the fastening tape, and when the fastening tape is pulled, the fastening tape can contract towards the inside to be attached to the outer surface of the internal division resistance strip, so that the internal and external blocking parts are blocked into two parts while the fracture of the cable is locally limited and fixed through the binding pull wires.

As preferred, the separating ring includes cable single core, insulating interior snare, outer support cover, the laminating of cable single core surface and insulating interior snare internal surface, the inside four insulating interior snare that are equipped with of outer support cover, outer support cover is the first spacer element that is closest to cable fracture play as cable single core, and it can be fine forms stable joint with the fracture of cable to make the fracture under its lead and connect the utility, form the effect the same with the cable protective wall.

As preferred, grafting draws belting and constructs including constraint acting as go-between, pivot connecting piece, gravity piece, hard rack, goods of furniture for display rather than for use, the constraint is acted as go-between the right-hand member and is leaned on the upper position with the goods of furniture for display rather than for use left side and fix together, goods of furniture for display rather than for use upper right end is equipped with hard rack and rather than structure as an organic whole, goods of furniture for display rather than for use left end intermediate position is located to pivot connecting piece right-hand member, the mode that the gravity.

Preferably, the photovoltaic cable handing-over mechanism comprises a connecting core strip, an insulating protective sleeve, a pressure guiding mechanism, a fixed shaft leading block and an inserting rod, wherein the right end of the connecting core strip is installed inside the left end of the pressure guiding mechanism in an embedded mode, the inner surface of the insulating protective sleeve is attached to the outer surface of the connecting core strip, and the left end of the inserting rod transversely penetrates through the fixed shaft leading block.

Preferably, the pressure guide mechanism comprises conductive pressing sheets, an inner connecting wire, a sliding cavity, a type supporting strip and a locking plate, the inner connecting wire penetrates through all the conductive pressing sheets, the locking plates are arranged inside the top end faces of the conductive pressing sheets, the type supporting strip is fixedly connected together through the locking plates, and the type supporting strip is arranged inside the sliding cavity.

Compared with the prior art, the invention has the following advantagesAdvantageous effects：

The main protective sleeve layer is disconnected and interrupted, the cable is locked by the high-reduction inserting and sealing mechanism arranged inside the receiving sleeve and the inserting sleeve, the cable is fixed by the inserting and leading mechanism through the stamping force when the cable is inserted, and the tight covering band is dragged and braked by the tight covering band, so that the cable is locked, the connecting core strips at two ends are in contact connection with the insulating protective sleeve, and the tight covering band is extruded and rolled by the guiding and pressing mechanism to be in contact, so that the tight covering band is positioned in a local area where two photovoltaic cables are connected, a local weakening fault cannot occur, the function of the photovoltaic cables is guaranteed, and the service life of the cables can be prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a distributed photovoltaic cable according to the present invention.

Fig. 2 is a schematic front sectional view of a photovoltaic cable high-restoration handover device of a distributed photovoltaic cable according to the present invention.

FIG. 3 is a side sectional structural view of the separating ring.

Fig. 4 is a side view, a cross-sectional detailed structure of the high recovery plugging mechanism.

Fig. 5 is a side view of the tape guiding mechanism.

Fig. 6 is a cross-sectional detailed structural diagram of a photovoltaic cable connecting mechanism.

Fig. 7 is a detailed structural diagram of the interior of the pressure guide mechanism.

Fig. 8 is a detailed structural diagram of the interior of the pressure guide mechanism.

In the figure: the photovoltaic cable high-reduction connection device comprises a first connection cable section-1, a photovoltaic cable high-reduction connection device-2, a tail connection cable section-3, an inner core cladding-4, a plug bush-2 q1, a high-reduction plug sealing mechanism-2 a, a receiving bush-2 q3, a point card connection ring-2 q4, a separation ring-2 b, a heat insulation ring-2 a1, a tight covering belt-2 a2, a plug leading belt mechanism-2 a3, an inner resistance strip-2 a4, a photovoltaic cable connection mechanism-2 a5, a cable single core-2 b1, an insulation inner ring bush-2 b2, an outer support bush-2 b3, a binding pull wire-2 a31, a rotating shaft connecting piece-2 a32, a gravity piece-2 a33, a hard tooth strip-2 a34, a swinging piece-2 a35, a connecting core strip-2 a51, an insulation protective cover-2 a52 and a voltage guide mechanism-2 aa, A fixed shaft guide block-2 a54, a plunger-2 a55, a conductive pressing sheet-2 aa1, an inner connecting wire-2 aa2, a sliding cavity-2 aa3, a U-shaped stay-2 aa4 and a locking sheet-2 aa 5.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in figures 1 to 8:

the invention provides a distributed photovoltaic cable, which structurally comprises a first cable section 1, a photovoltaic cable high-reduction cross-connecting device 2, a tail cable section 3 and an inner core cladding 4, the right end of the first cable section 1 is arranged inside the left end of the photovoltaic cable high-reduction cross-connecting device 2 in an embedded mode, the tail cable section 3 is connected with the head cable section 1 through a photovoltaic cable high-reduction cross-connecting device 2, an inner core cladding 4 is arranged inside the tail cable section 3, the photovoltaic cable high-recovery cross connecting device 2 comprises a plug bush 2q1, a high-recovery plug sealing mechanism 2a, a receiving bush 2q3, a point card connecting ring 2q4 and a separating ring 2b, the plug sleeve 2q1 and the receiving sleeve 2q3 are mechanically connected together by a click-to-snap ring 2q4, the outer ring surface of the separating ring 2b is fixedly connected to the inner surface of the inserting sleeve 2q1 in an electric welding mode, and the high-recovery inserting and sealing mechanism 2a is fixedly installed inside the inserting sleeve 2q 1.

The high-reduction plug-in sealing mechanism 2a comprises a heat insulation ring 2a1, a tightening strap 2a2, a plug-in leading belt mechanism 2a3, an internal division resistance strip 2a4 and a photovoltaic cable connection mechanism 2a5, wherein the heat insulation ring 2a1 and the internal division resistance strip 2a4 are in the same axis center, the photovoltaic cable connection mechanism 2a5 is connected with the internal division resistance strip 2a4, the bottom end of the plug-in leading belt mechanism 2a3 is installed on the outer surface of the internal division resistance strip 2a4 in an embedded mode, the tightening strap 2a2 is movably connected with the plug-in leading belt mechanism 2a3, binding pull wires 2a31 penetrate through the side surfaces of the tightening strap 2a2, and when the tightening strap is pulled, the tightening strap contracts towards the inside and is attached to the outer surface of the internal division resistance strip 2a4, so that the inside and the outside of the fracture of the cable are separated into two parts while the inside and outside of the fracture are limited and fixed locally through.

Wherein, separating ring 2b includes cable single core 2b1, insulating interior ring cover 2b2, outer support cover 2b3, the laminating of cable single core 2b1 surface and insulating interior ring cover 2b2 internal surface, outer support cover 2b3 inside is equipped with four insulating interior ring covers 2b2, outer support cover 2b3 is the first isolating part that is closest to cable fracture play as cable single core 2b1, and it can be fine forms stable interface with the fracture of cable to make the fracture under its lead and connect the effect, form the same effect with the cable protective wall.

The inserting belt guiding mechanism 2a3 includes a binding wire 2a31, a rotating shaft connector 2a32, a weight piece 2a33, a hard rack 2a34 and a swinging part 2a35, the right end of the binding wire 2a31 is fixed with the left side of the swinging part 2a35 at an upper position, the right upper end of the swinging part 2a35 is provided with the hard rack 2a34 and is integrated with the same, the right end of the rotating shaft connector 2a32 is arranged at the middle position of the left end of the swinging part 2a35, the right end of the weight piece 2a33 is arranged below the left side of the swinging part 2a35 in an embedding manner, when the connected cable is inserted, the swinging part 2a35 is impacted by the opposite side of the bottom end weight piece 2a33, so that the whole rotates around the rotating shaft connector 2a32, the hard rack 2a34 and the cable skin clamp the cable to move and draw the binding wire 2a 31.

The photovoltaic cable connection and disconnection mechanism 2a5 includes a connection core bar 2a51, an insulation protection sleeve 2a52, a pressure guide mechanism 2aa, a fixed shaft guide block 2a54, and an insertion rod 2a55, wherein the right end of the connection core bar 2a51 is installed inside the left end of the pressure guide mechanism 2aa in an embedded manner, the inner surface of the insulation protection sleeve 2a52 is attached to the outer surface of the connection core bar 2a51, the left end of the insertion rod 2a55 transversely penetrates through the fixed shaft guide block 2a54, the fixed shaft guide block 2a54 can keep the position unchanged when the insertion rod 2a55 is fixed to an external ferrule and is rotated, so that the pressure guide mechanism 2aa compacts the embedded inner core by pulling the inner wire 2aa2, and because the connection mechanism adopts separated conduction, the connection operation of each line can be better.

The pressure guide mechanism 2aa comprises conductive pressing pieces 2aa1, an inner wire 2aa2, a sliding cavity 2aa3, a U-shaped stay 2aa4 and locking pieces 2aa5, the inner wire 2aa2 penetrates through all the conductive pressing pieces 2aa1, the locking pieces 2aa5 are arranged inside the top end face of each conductive pressing piece 2aa1, the U-shaped stays 2aa4 are fixedly connected together through the locking pieces 2aa5, the U-shaped stay 2aa4 is arranged inside the sliding cavity 2aa3, the U-shaped stay 2aa4 is U-shaped in a normal state, but when the conductive pressing pieces 2aa1 are pressed by force, the height of the stay is inversely proportional to the distance between the two ends of the tail end, and when the pressing force is lost, the conductive pressing pieces 2aa1 can be restored and separated by the restored elastic thrust.

The specific use mode and function of the embodiment are as follows:

in the invention, in the process of distributed installation of the photovoltaic cable, when the photovoltaic cable needs to be spliced, the cables at two ends are respectively embedded and separated in the high-recovery inserting and sealing mechanism 2a after the partial outer protective layers of the cables are removed, and when the cable is embedded, the lower end of the swinging part 2a35 is pushed and pressed to the end surface of one side far away from the gravity sheet 2a33, so that the swinging part 2a35 can rotate clockwise by taking the swinging part as the axis under the fixation of the rotating shaft connecting part 2a32, the hard rack 2a34 can be embedded and meshed in the outer protective skin of the cable, the skin has strong toughness and cannot be punctured to expose the inner core, after complete meshing, the swinging part can move together with the cable in the action of continuous insertion of the cable, so as to pull the binding pull wire 2a31, and the binding tape 2a2 can be separated from the heat insulation ring 2a1 and close to the inner resistance strip 2a4, it is used as an isolation element to separate the space of the inner part and the outer part, the first butt joint is completed by inserting different insulating inner ring sleeves 2b2 into four different through holes in the single core 2b1 of the cable, when the left end of the splicing sleeve 2q1 is inserted into the receiving sleeve 2q3, the insulating inner ring sleeve 2b2 and the connecting core bar 2a51 will contact each other in the pressure guide mechanism 2aa, and the point clamping connecting ring 2q4 is needed to complete the assembly, when the receiving sleeve 2q1 is held and the receiving sleeve 2q3 is screwed, the part of the point clamping connecting ring 2q4 belonging to the receiving sleeve 2q3 will draw the receiving sleeve 2aa2 while following the screwing, so that the gap between the conductive pressing sheet 2aa1 and expanded by the U-shaped supporting sheet 2 4 will be reduced continuously, and the U-shaped supporting sheet 2aa4 will be deformed temporarily during the pressure, when the conductive pressing sheet 2aa1 in the pressure guide mechanism 2aa clamps the connecting core 2a51 b 2b, because the connecting fracture is made of the conductive material, the two connecting fractures can be tightly connected.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a distributed photovoltaic cable, its structure includes first cable section (1), photovoltaic cable high reduction handing-over device (2), tail cable section (3), inner core covering (4), first cable section (1) right-hand member is installed inside photovoltaic cable high reduction handing-over device (2) left end through the mode of embedding, tail cable section (3) are connected with first cable section (1) through photovoltaic cable high reduction handing-over device (2), inside inner core covering (4) that are equipped with of tail cable section (3), its characterized in that:

the photovoltaic cable high-reduction handover device (2) comprises an insertion sleeve (2q1), a high-reduction insertion sealing mechanism (2a), a receiving sleeve (2q3), a point card connecting ring (2q4) and a separating ring (2b), wherein the insertion sleeve (2q1) and the receiving sleeve (2q3) are mechanically connected together through the point card connecting ring (2q4), the outer ring surface of the separating ring (2b) is fixedly connected to the inner surface of the insertion sleeve (2q1) in an electric welding mode, the high-reduction insertion sealing mechanism (2a) is fixedly installed inside the insertion sleeve (2q1), the high-reduction insertion sealing mechanism (2a) comprises a heat insulation ring (2a1), a covering strip (2a2), an insertion leading strip mechanism (2a3), an internal resistance strip (2a4) and a photovoltaic cable handover mechanism (2a5), the heat insulation ring (2a1) and the internal resistance strip (2a4) are the same, and the photovoltaic cable handover mechanism (5 a4) is connected with the axis of the photovoltaic cable handover mechanism (4), the bottom end of the inserting belt guiding mechanism (2a3) is arranged on the outer surface of the inner dividing resistance strip (2a4) in an embedding mode, and the tightening belt strip (2a2) is movably connected with the inserting belt guiding mechanism (2a 3);

separating ring (2b) include cable single core (2b1), insulating interior inner ring cover (2b2), outer support cover (2b3), the laminating of cable single core (2b1) surface and insulating interior inner ring cover (2b2) internal surface, outer support cover (2b3) inside is equipped with four insulating interior inner ring covers (2b 2).