CN115377704A

CN115377704A - Large-overhead-span direct-current photovoltaic cable

Info

Publication number: CN115377704A
Application number: CN202210945700.2A
Authority: CN
Inventors: 常勇; 潘钰
Original assignee: Shanghai Jinyou Jinhong Intelligent Electric Co ltd
Current assignee: Shanghai Jinyou Jinhong Intelligent Electric Co ltd
Priority date: 2022-08-08
Filing date: 2022-08-08
Publication date: 2022-11-22

Abstract

The invention discloses a direct-current photovoltaic cable with large overhead span, which comprises a matched cable, wherein a replacement cable is arranged at one end of the matched cable, the matched cable and the replacement cable are respectively composed of an external insulating protection envelope and an internal lining, a hot-melting extrusion disc is clamped between the replacement cable and the matched cable and is electrically connected with an external power supply, the hot-melting extrusion disc is composed of two semicircular rings, the two semicircular rings are mutually spliced into a whole circle, an installation support is arranged outside the hot-melting extrusion disc, a guide sliding rod is fixedly arranged on one side of the installation support through welding, the installation support and the guide sliding rod are mutually sleeved in a sliding manner, telescopic connecting arms are correspondingly and movably connected to two sides of the installation support through hinges, one side of each telescopic connecting arm is movably connected with an arc-shaped attached disc through a hinge, and one end of the replacement cable is provided with a leftover material removing device through clamping.

Description

Large-overhead-span direct-current photovoltaic cable

Technical Field

The invention belongs to the technical field of photovoltaic cables, and particularly relates to a direct-current photovoltaic cable with large overhead span.

Background

Photovoltaic cable is a cable of transmission electric energy, some cables are furnished with the inside lining and are carried out signal auxiliary transmission, when the super long-distance service behavior of span is big, the cable strip of paper used for sealing because with the difference of inside steel expend with heat and contract with cold nature, the wiring end exists the length of strip of paper used for sealing and is greater than or be less than the condition of inside steel, generally keep the strip of paper used for sealing length and inside lining unanimous through the tractive by force when being less than, nevertheless can harm the life-span of cable strip of paper used for it splits more easily to use for a long time, equipment transformation cost is great, the practicality is poor. This phenomenon becomes an urgent problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to solve the problems in the background art by aiming at the existing material collecting device, namely a direct current photovoltaic cable with large overhead span.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a large direct current photovoltaic cable of overhead span, includes supporting cable, supporting cable's one end is provided with the replacement cable, supporting cable and replacement cable constitute by outside insulation protection strip of paper used for sealing and inside lining, the centre gripping is provided with hot melt extrusion dish between replacement cable and the supporting cable, hot melt extrusion dish is connected with external power source electricity.

The invention further discloses that the hot-melting extrusion disc is composed of two semicircular rings which are spliced into a whole circle, an installation support is arranged outside the hot-melting extrusion disc, a guide sliding rod is fixedly welded on one side of the installation support, the installation support and the guide sliding rod are mutually sleeved in a sliding mode, and telescopic connecting arms are movably connected on two sides of the installation support correspondingly through hinges.

The invention further discloses that one side of the telescopic connecting arm is movably connected with arc-shaped attaching discs through a hinge, and the two arc-shaped attaching discs are respectively clamped with a replacement cable and a matched cable.

The invention further discloses that the arc-shaped attaching plates are made of magnetic materials, and the two arc-shaped attaching plates are mutually attracted by magnetic force.

The invention further discloses that a first thermal fuse and a second thermal fuse are correspondingly arranged on two sides of the hot-melt extrusion disc, the first thermal fuse and the insulation protection cover are located in the same circumference, and the second thermal fuse and the lining are located in the same circumference.

The invention further discloses that one end of the replacement cable is provided with an leftover material removing device in a clamping manner, the inside of the leftover material removing device is rotatably connected with a transmitting disc through a bearing, the inner wall of the leftover material removing device is fixedly provided with a second motor in a welding manner, the output end of the second motor is movably connected with a gear through a coupler, the gear is meshed with the transmitting disc, one side of the transmitting disc is provided with a transmitting head, one side of the transmitting head is uniformly provided with clamping grooves, one side of the transmitting disc is uniformly provided with clamping blocks, the clamping grooves and the clamping blocks are mutually clamped and matched, the outer wall of the transmitting head is uniformly provided with an leftover material collecting hopper, and the leftover material collecting hopper is contacted with the inner wall of the lining.

The invention further discloses that the inner wall of the leftover material removing device is provided with a jet cylinder, the output end of the jet cylinder is fixedly provided with vent pipes through welding, through holes are uniformly formed in the emission disc, and the vent pipes are communicated with the through holes.

The invention further discloses that one end of the launching head is connected with a pull back rope, the rear end of the leftover material removing device is provided with a first motor, the output end of the first motor is connected with a rope reel, and the pull back rope is wound outside the rope reel.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, one end of a short matched cable is connected with the replacement cable by a hot melting connection method, so that the cable envelope can reach a proper length without forced drawing, and leftover materials of melted synthetic plastics can be removed, so that the inside of the cable envelope is smooth and flat, and the damage of the inside cable is prevented.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

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

FIG. 2 is a schematic illustration of the scrap removal process of the present invention;

FIG. 3 is a schematic view of the scrap removing apparatus of the present invention;

FIG. 4 is a schematic view of a hot melt extrusion disk configuration of the present invention;

in the figure: 1. a replacement cable; 2. a mating cable; 3. hot melting the extrusion disc; 31. a first thermal fuse; 32. a second thermal fuse; 4. mounting a bracket; 41. a guide slide bar; 42. a telescoping connecting arm; 43. an arc-shaped attaching plate; 51. insulating protective covers; 52. a liner; 6. a scrap removing device; 61. a launch pad; 611. a clamping block; 62. a transmitting head; 621. a card slot; 63. a leftover material collecting hopper; 64. a first motor; 641. a rope reel; 65. a second motor; 651. a gear; 66. an injection cylinder; 661. a breather pipe; 67. and (6) pulling back the rope.

Detailed Description

The present invention will be described in further non-limiting detail with reference to the following preferred embodiments and accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all 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, the present invention provides the following technical solutions: a large-span direct current photovoltaic cable of overhead, including supporting cable 2, one end of supporting cable 2 has replaced the cable 1, supporting cable 2 and replacing the cable 1 and protecting the strip of paper used for sealing 51 and inside lining 52 to make up by the outside insulation, the clamp is provided with the hot melt extrusion disc 3 between supporting cable 1 and the supporting cable 2, the hot melt extrusion disc 3 is electrically connected with external power, through carrying on the hot melt connection with one end of supporting cable 2 the replacing the cable 1, can lengthen the supporting cable 2 according to the appropriate length, the structure without transforming the terminal can be connected, it is practical and convenient;

the hot-melting extrusion disc 3 is composed of two semicircular rings, the two semicircular rings are spliced into a whole circle, a mounting bracket 4 is arranged outside the hot-melting extrusion disc 3, a guide slide rod 41 is fixedly welded on one side of the mounting bracket 4, the mounting bracket 4 is in sliding sleeve joint with the guide slide rod 41, two sides of the mounting bracket 4 are correspondingly and movably connected with telescopic connecting arms 42 through hinges, the two semicircular rings are spliced during hot melting, the end of a protective lining can be heated and melted at the moment, the two ends of the protective lining can be melted into a whole, the two semicircular parts are unfolded after the hot melting is finished, the two semicircular parts slide in parallel on the guide slide rod 41 until the two semicircular parts are not in boundary with the hot-melting extrusion disc 3, the supporting cable 2 and the replacement cable 1 at the two ends can be directly connected together when the two semicircular parts are unfolded, and the operation is convenient;

one side of the telescopic connecting arm 42 is movably connected with an arc attaching disc 43 through a hinge, the two arc attaching discs 43 are respectively clamped with the compensation cable 1 and the matching cable 2, when the matching cable 2 and the compensation cable 1 are connected with each other, firstly, the included angle of the two telescopic connecting arms 42 is reduced, the distance between the two arc attaching discs 43 is close, the two telescopic connecting arms can be conveniently connected together, and the connection is conveniently guided to prevent deviation;

the arc-shaped attaching plates 43 are made of magnetic materials, the two arc-shaped attaching plates 43 are mutually attracted by magnetic force, when the two arc-shaped attaching plates 43 are mutually contacted, the two replacement cables 1 and the matched cable 2 can be closely attached together by the magnetic force for being cooled, and when the hot melting is finished, the two arc-shaped attaching plates 43 are manually separated;

the two sides of the hot melt extrusion disc 3 are correspondingly provided with a first hot melt 31 and a second hot melt 32, the first hot melt 31 and the insulation protection envelope 51 are positioned in the same circumference, the second hot melt 32 and the lining 52 are positioned in the same circumference, and different currents are introduced into the first hot melt 31 and the second hot melt 32 to enable the heating temperatures to be different, wherein the heating temperature of the first hot melt 31 is equal to the temperature of the plastic envelope, the heating temperature of the second hot melt 32 is equal to the heating temperature of the lining, so that the ends of the first hot melt and the second hot melt can both control proper temperatures to melt, and the sealing performance is improved when the insulation protection envelope 51 is sealed;

one end of a substitute cable 1 is provided with a leftover material removing device 6 through clamping, the inside of the leftover material removing device 6 is rotatably connected with a transmitting disc 61 through a bearing, the inner wall of the leftover material removing device 6 is fixedly provided with a motor II 65 through welding, the output end of the motor II 65 is movably connected with a gear 651 through a coupler, the gear 651 is mutually meshed with the transmitting disc 61, one side of the transmitting disc 61 is provided with a transmitting head 62, one side of the transmitting head 62 is uniformly provided with a clamping groove 621, one side of the transmitting disc 61 is uniformly provided with a clamping block 611, the clamping groove 621 is mutually clamped and matched with the clamping block 611, the outer wall of the transmitting head 62 is uniformly provided with a leftover material collecting hopper 63, the leftover material collecting hopper 63 is contacted with the inner wall of the lining 52, when the synthetic plastic is cooled and solidified, starting a second motor 65 to drive the second transmitting disk 61 to rotate, wherein when the clamping block 611 is clamped into the clamping groove 621, the second transmitting disk 61 drives the transmitting head 62 to rotate, an initial rotating speed is given to the transmitting head 62, when the transmitting head 62 is separated from the transmitting disk 61, the transmitting head 62 can always keep rotating, the leftover material collecting hopper 63 is driven to rotate through circumferential rotation of the transmitting head 62, the leftover material collecting hopper 63 can be used for fully scraping the inner wall of the protective lining at the moment, the inner wall of the protective lining is smooth, edges or protruding places cannot exist, the inner cable envelope cannot be damaged due to friction, and scraped granular leftover materials are collected;

the inner wall of the leftover material removing device 6 is provided with an injection cylinder 55, the output end of the injection cylinder 55 is fixedly provided with vent pipes 661 by welding, through holes are uniformly formed in the emission disc 61, the vent pipes 661 are communicated with the through holes, when leftover materials need to be recovered, the synthetic plastics should be cooled into a solid state again, the injection cylinder 55 is started to generate gas, the gas enters the vent pipes 661 and is sprayed out from the inside, when the emission disc 61 rotates to a certain angle, the through holes are communicated, the emission head 62 is emitted out to scrape the inner wall of the protective lining, and sufficient power is provided to remove the molten redundant leftover materials;

the one end of transmission head 62 is connected with back stay cord 67, a motor 64 is installed to leftover bits remove device 6's rear end, the output of a motor 64 is connected with reel 641, the winding of back stay cord 67 is in the outside of reel 641, through a starter motor 64, can drive reel 641 and rotate, can drive back stay cord 67 this moment and convolute in the outside of reel 641, draw back transmission head 62 home position, can launch again the tractive, make the internal surface of protection inside lining become smoothly level, be free from the abnormal situation with normal protection inside lining.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions may be made in some technical features thereof, without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a direct current photovoltaic cable that overhead span is big, includes supporting cable (2), its characterized in that: the one end of supporting cable (2) is provided with alternate cable (1), supporting cable (2) and alternate cable (1) constitute by outside insulation protection strip of paper used for sealing (51) and inside lining (52), the centre gripping is provided with hot melt extrusion dish (3) between alternate cable (1) and supporting cable (2), hot melt extrusion dish (3) are connected with the external power electricity.

2. The direct current photovoltaic cable with large overhead span according to claim 1, wherein: hot melt extrusion dish (3) comprise two semicircle rings, and two semicircle rings splice into a whole circle each other, the outside of hot melt extrusion dish (3) is provided with installing support (4), one side of installing support (4) is through welded fastening have direction slide bar (41), installing support (4) and direction slide bar (41) slip each other cup joint, there is flexible linking arm (42) through hinge swing joint in the both sides correspondence of installing support (4).

3. The direct current photovoltaic cable with large overhead span according to claim 2, wherein: one side of flexible linking arm (42) has attached dish of arc (43), two through hinge swing joint the attached dish of arc (43) is connected with alternate cable (1) and supporting cable (2) looks joint respectively.

4. The direct current photovoltaic cable with large overhead span according to claim 3, wherein: the arc-shaped attaching plates (43) are made of magnetic materials, and the two arc-shaped attaching plates (43) are attracted by magnetic force.

5. The large-overhead-span direct current photovoltaic cable according to claim 4, wherein: the hot melt extrusion dish (3) both sides correspond and install hot melt (31) and two (32) of hot melt, hot melt (31) are located same circumference with insulating protection strip of paper used for sealing (51), two (32) of hot melt are located same circumference with inside lining (52).

6. The direct current photovoltaic cable with large overhead span according to claim 5, wherein: one end of replacement cable (1) is provided with leftover materials remove device (6) through the joint, the inside of leftover materials remove device (6) is connected with launching disc (61) through the bearing rotation, the inner wall of leftover materials remove device (6) is through welded fastening has motor two (65), the output of motor two (65) has gear (651) through shaft coupling swing joint, gear (651) and launching disc (61) intermeshing, one side of launching disc (61) is provided with emitter head (62), draw-in groove (621) have evenly been seted up to one side of emitter head (62), one side of launching disc (61) evenly is provided with fixture block (611), draw-in groove (621) and fixture block (611) joint cooperation each other, leftover materials collection fill (63) are evenly installed to the outer wall of emitter head (62), leftover materials collection fill (63) contact with the inner wall of inside lining (52).

7. The direct current photovoltaic cable with large overhead span according to claim 6, wherein: the inner wall of leftover material removing device (6) is installed and is sprayed cylinder (55), the output of spraying cylinder (55) is fixed with breather pipe (661) through the welded joint, the through-hole has evenly been seted up on launching disk (61), breather pipe (661) link up with the through-hole each other.

8. The direct current photovoltaic cable with large overhead span according to claim 7, wherein: one end of the emitting head (62) is connected with a pull-back rope (67), a first motor (64) is installed at the rear end of the leftover material removing device (6), the output end of the first motor (64) is connected with a rope reel (641), and the pull-back rope (67) is wound outside the rope reel (641).