CN215344496U

CN215344496U - Photovoltaic lightning protection combiner box

Info

Publication number: CN215344496U
Application number: CN202121318179.7U
Authority: CN
Inventors: 施守文
Original assignee: ANHUI MAN RUITE ELECTRIC CO LTD
Current assignee: ANHUI MAN RUITE ELECTRIC CO LTD
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-12-28
Anticipated expiration: 2031-06-15

Abstract

The utility model discloses a photovoltaic lightning protection combiner box which comprises a trapezoidal overhead base and an outer box body, wherein the outer box body is made of plastic, an inner box body is arranged inside the outer box body, a combiner bar is arranged inside the inner box body, the combiner bar is electrically connected with an output terminal, an input collecting lead extends to the inside of the inner box body and is electrically connected with the input terminal on the combiner bar, the bottom end of the combiner bar is electrically connected with a lead, and the bottom end of the lead extends to the inside of the trapezoidal overhead base and is electrically connected with a lightning arrester. This photovoltaic lightning combiner box, the bottom has set up trapezoidal built on stilts base, and the material is PVC, it is built on stilts to make outer box, avoid direct and ground contact, the light trap has been seted up at the top of outer box, make external light can directly shine into, the inside dehumidification of being convenient for, the light trap directly communicates with the external world simultaneously, the moisture of being convenient for discharges, thereby keep dry, avoid inside electrical equipment to rust because of the humidity, can prevent too high prevention equipment damage of instantaneous voltage through setting up the arrester in addition.

Description

Photovoltaic lightning protection combiner box

Technical Field

The utility model relates to the technical field of photovoltaic combiner boxes, in particular to a photovoltaic lightning protection combiner box.

Background

In a photovoltaic grid-connected power generation system, in order to reduce connecting wires between a photovoltaic module and an inverter, facilitate maintenance and improve reliability, a direct current convergence device generally needs to be added between the photovoltaic module and the inverter. The photovoltaic combiner box is a power box designed for meeting the requirements, is a device for collecting current, is mainly used in large and medium photovoltaic systems, has a large number of component strings and a large output, and needs a device for concentrating the output so as to be directly connected to an inverter.

At present, photovoltaic conflux case all installs outdoors, and the main problem that exists is exactly the problem of receiving moist corrosion and lightning protection in the course of the work.

Therefore, the utility model provides a photovoltaic lightning protection combiner box.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a photovoltaic lightning protection combiner box to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a photovoltaic lightning protection combiner box comprises a trapezoidal overhead base, wherein the upper surface of the trapezoidal overhead base is fixedly connected with an outer box body which is made of plastics, the inner part of the outer box body is fixedly connected with an inner box body through a rectangular block, a bus bar is arranged in the inner box body, the bus bar is electrically connected with an output binding post, the surface of trapezoidal built on stilts base and interior box body, the line hole has all been seted up to the lower surface of outer box body, the input wire that gathers passes the line hole and extends to the inside of interior box body and the input terminal electric connection on the busbar, the bottom electric connection of busbar has the wire, the inside electric connection that the bottom of wire extends to trapezoidal built on stilts base has the arrester, the arrester is hot-galvanize photovoltaic arrester, the bottom ground connection setting of arrester, the wire hole has been seted up at the back of outer box body, the through-hole with the wire hole intercommunication is seted up at the top of interior box body.

Preferably, both sides of the bottom end of the trapezoidal overhead base are fixedly connected with fixing blocks, and the surface of each fixing block is in threaded connection with a mounting bolt.

Preferably, a plurality of radiating holes are formed in the surface of the trapezoidal overhead base, and a rubber protective sleeve sleeved on the surface of the input gathering wire is arranged inside the wire hole.

Preferably, the upper surface of the outer box body is provided with a light hole, the top of the outer box body is provided with a transparent cover through a connecting column, the transparent cover wraps the top end of the whole outer box body, and a gap of 1-3cm is kept between the transparent cover and the outer box body.

Preferably, trapezoidal built on stilts base is PVC plastics material, and the door that opens and shuts is installed in the front of outer box, and the surface of door that opens and shuts is provided with perspective window, and the front of interior box body sets up the dodge gate.

Advantageous effects

The utility model provides a photovoltaic lightning protection combiner box which has the following beneficial effects:

1. this photovoltaic lightning combiner box, the bottom has set up trapezoidal built on stilts base, and the material is PVC, makes outer box built on stilts, avoids direct and ground contact, and the light trap has been seted up at the top of outer box, makes external light can directly shine into, and the inside dehumidification of being convenient for, the light trap directly communicates with the external world simultaneously, and the moisture of being convenient for discharges to keep dry, avoid inside electrical equipment to rust because of the humidity.

2. This photovoltaic lightning combiner box is connected with the busbar through setting up the arrester, can avoid the input instantaneous voltage that gathers the wire too high, can shift high-voltage impulse current to the ground to better inside components and parts of protection set up the arrester in the inside of trapezoidal built on stilts base, are favorable to keeping wholly pleasing to the eye, can prevent to be exposed to the sun simultaneously and drench, increase of service life.

Drawings

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

FIG. 2 is a schematic front sectional view of the present invention;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

In the figure: 1 trapezoidal built on stilts base, 2 outer box, 3 interior box bodys, 4 busbar, 5 output terminal, 6 input wire, 7 wires, 8 arresters, 9 wire holes, 10 through-holes, 11 fixed blocks, 12 louvres, 13 rubber lag, 14 light trap, 15 translucent covers, 16 spliced poles of gathering.

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. 1-3, the present invention provides a technical solution: the utility model provides a photovoltaic lightning combiner box, including trapezoidal built on stilts base 1, outer box 2 of trapezoidal built on stilts base 1's last fixed surface is connected with, the material of outer box 2 is plastics, trapezoidal built on stilts base 1's bottom both sides fixedly connected with fixed block 11, a plurality of louvres 12 have been seted up on trapezoidal built on stilts base 1's surface, the surperficial threaded connection of fixed block 11 has construction bolt, through setting up fixed block 11 and construction bolt, be convenient for trapezoidal built on stilts base 1 and ground installation, trapezoidal built on stilts base 1 is the PVC plastics material, the outer box 2 and trapezoidal base 1 of plastics material can effectually prevent the built on stilts thunderbolt.

The front of outer box 2 is installed and is opened and shut the door, and the surface of opening and shutting door is provided with perspective window, and the front of interior box body sets up the dodge gate, is convenient for observe inside outer box 2 through setting up perspective window.

Box body 3 in rectangular block fixedly connected with is passed through to the inside of outer box body 2, the internally mounted of interior box body 3 has

busbar

4, 4 electric connection of busbar have output terminal 5, trapezoidal overhead base 1's surface and interior box body 3, the line hole has all been seted up to the lower surface of outer box body 2, input wire 6 that gathers passes the line hole and extends to the inside of interior box body 3 and the input terminal electric connection on busbar 4, the inside in line hole is provided with the cover and locates the rubber lag 13 on 6 surfaces of input wire that gathers.

The bottom electric connection of busbar 4 has wire 7, the inside electric connection that the bottom of wire 7 extends to trapezoidal built on stilts base 1 has arrester 8, arrester 8 is hot-galvanize photovoltaic arrester, arrester 8's bottom ground connection sets up, be connected with busbar 4 through setting up arrester 8, the instantaneous voltage that can avoid the input wire 6 that gathers is too high, can shift high-voltage impulse current to the ground, thereby better inside components and parts of protection, set up arrester 8 in trapezoidal built on stilts base 1's inside, be favorable to keeping wholly pleasing to the eye, can prevent to be exposed to the sun simultaneously and drench, prolong arrester 8's life-span.

The wire hole 9 has been seted up at the back of outer box 2, the through-hole 10 with wire hole 9 intercommunication has been seted up at the top of interior box body 3, the light trap 14 has been seted up to the upper surface of outer box 2, the translucent cover 15 is installed through spliced pole 16 at the top of outer box 2, the top of whole outer box 2 is lived to translucent cover 15 parcel, and keeps 1-3 cm's clearance between translucent cover 15 and the outer box 2.

The light trap 14 has been seted up at the top of outer box 2, makes external light can directly shine into, the inside dehumidification of being convenient for, and the light trap 14 directly communicates with the external world simultaneously, and the moisture of being convenient for discharges to keep dry, avoid inside electrical equipment to rust because of the humidity.

The working principle is as follows: when the photovoltaic lightning protection combiner box is installed, firstly, the trapezoidal overhead base 1 is installed on the ground through the fixing block 11 and the installation bolt, then the lightning arrester 8 is installed, the bottom end of the lightning arrester 8 is grounded, the top of the lightning arrester 8 is connected with the lead 7, then the outer box body 2 is installed, the outer box body 2 is connected with the trapezoidal overhead base 1, the lead 7 is connected with the busbar 4, the input collecting lead 6 is introduced and extends to the inside of the inner box body 3 to be electrically connected with the input binding post on the busbar 4, finally, the output line is inserted into the inside of the wire outlet hole 9 and penetrates through the through hole 10 to be connected with the output binding post 5, the through hole 10 is sealed by glass cement, the movable door is closed, and the installation can be completed by closing the opening and closing door;

when taking place the thunder and lightning, because trapezoidal built on stilts base 1 and outer box 2 are the plastics material, consequently have the effect of lightning protection, install arrester 8 in addition, when the instantaneous voltage of wire 6 was gathered in the input was too high, arrester 8 acted on, with the leading-in ground of high voltage impulse current to have the function of lightning protection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a photovoltaic lightning combiner box, includes trapezoidal built on stilts base (1), its characterized in that: the upper surface of the trapezoidal overhead base (1) is fixedly connected with an outer box body (2), the outer box body (2) is made of plastic, the inner part of the outer box body (2) is fixedly connected with an inner box body (3) through a rectangular block, a bus bar (4) is installed in the inner part of the inner box body (3), the bus bar (4) is electrically connected with an output binding post (5), wire holes are formed in the surface of the trapezoidal overhead base (1) and the lower surfaces of the inner box body (3) and the outer box body (2), an input gathering wire (6) penetrates through the wire holes and extends to the inner part of the inner box body (3) to be electrically connected with the input binding post on the bus bar (4), the bottom end of the bus bar (4) is electrically connected with a wire (7), the bottom end of the wire (7) extends to the inner part of the trapezoidal overhead base (1) and is electrically connected with a lightning arrester (8), and the lightning arrester (8) is a hot galvanizing photovoltaic arrester, the bottom ground connection setting of arrester (8), wire hole (9) have been seted up at the back of outer box (2), and through-hole (10) with wire hole (9) intercommunication are seted up at the top of inner box body (3).

2. The photovoltaic lightning protection combiner box of claim 1, wherein: the bottom end two sides of the trapezoid overhead base (1) are fixedly connected with fixing blocks (11), and the surface of each fixing block (11) is in threaded connection with a mounting bolt.

3. The photovoltaic lightning protection combiner box of claim 1, wherein: a plurality of radiating holes (12) are formed in the surface of the trapezoidal overhead base (1), and a rubber protective sleeve (13) sleeved on the surface of the input gathering lead (6) is arranged inside the wire hole.

4. The photovoltaic lightning protection combiner box of claim 1, wherein: light-transmitting holes (14) are formed in the upper surface of the outer box body (2), a transparent cover (15) is installed at the top of the outer box body (2) through a connecting column (16), the transparent cover (15) wraps the top end of the whole outer box body (2), and a gap of 1-3cm is kept between the transparent cover (15) and the outer box body (2).

5. The photovoltaic lightning protection combiner box of claim 1, wherein: trapezoidal built on stilts base (1) is PVC plastics material, and the door that opens and shuts is installed in the front of outer box (2), and the surface of door that opens and shuts is provided with perspective window, and the front of interior box body (3) sets up the dodge gate.