DE202022106596U1 - A moisture barrier structure on variable high and low voltage sides of a PV array junction box - Google Patents

Abstract

A moisture barrier structure on variable high and low voltage sides of a PV generator junction box, characterized in that it comprises a housing (7), an installation cavity (10) being provided inside the housing (7), and the housing (7) at the top a top slot (12), the housing (7) having top brackets (6) on both sides in the vicinity of the top slot (12), with two mounting brackets (2) installed opposite to two top brackets (6) on the other side, two screws (3) are symmetrically placed between mounting brackets (2) and top brackets (6), one end of the screw (3) being screwed to a screw ring (11) with a through slot (4) near the screw (3 ) is provided on the side of the upper bracket (6), wherein a cable (5) is mounted in an inner recess of the mounting bracket (2), wherein one end of the cable (5) passes through the upper slot (12) extends into the interior of the installation cavity (10).

Description

technical field

The utility model relates to the technical field of the PV generator junction box, in particular to a moisture-barrier structure on variable high and low voltage sides of a PV generator junction box.

background technique

A PV generator junction box is used to monitor the operating status of the modules in the photovoltaic cell array, photovoltaic cell current measurement, lightning protection, status detection of DC circuit breakers, relay contact output. And the function of a PV generator junction box is to integrate multiple DC strings of the solar cell modules into a DC circuit and then connect to the inverter. Therefore, the input of the PV array junction box is actually two or more DC cable inputs, and there is one DC cable output.

But according to the prior art, variable high and low voltage side of a PV generator junction box is not strictly sealed, which is very easy to cause equipment corrosion. And small animals easily get into the inside of the device, or in severe cases, it will cause a short circuit of the system discharge. The blocking effect is bad, significantly shortening the life of a PV generator junction box. The regular maintenance tasks are large, which greatly increases the maintenance difficulty of the maintenance staff and reduces the maintenance efficiency of the maintenance staff.

Content of the utility model

The purpose of the utility model is to present a moisture barrier structure on variable high and low voltage sides of a PV array junction box to solve the prior art problem.

In order to achieve the above purpose, the utility model uses the following technical solutions: A moisture-proof structure on variable high and low voltage sides of a PV generator junction box, which includes a case, with an installation cavity provided inside the case, and the case at the top has a top slot, the case at the top near the top slot on both sides has top brackets, opposite two top brackets are installed on the other side, two mounting brackets are installed, with two screws symmetrically installed between mounting brackets and top brackets, one end of the screw with a Screw ring is screwed, with a through slot provided near the screw on the side of the top bracket, with a cable mounted in an inner recess of the mounting bracket, with one end of the cable passing through the top slot in extends the interior of the installation cavity.

Preferably the installation cavity is filled with a flexible self-levelling layer.

Preferably, a flexible barrier layer is filled in between the flexible self-levelling layer and the cable.

Preferably, the baffle is equipped with a handle lock.

Preferably the baffle is pivotally connected to one side of the housing.

Preferably, the grip fastener is provided with a rubber boot, and the rubber boot has a non-slip convex pattern formed on its surface.

• Durchs Drehen der Schraube und des Schraubenrings sichert das Gebrauchsmuster die Befestigungshalterung an einer Seite der Oberhalterung, bzw. durch die Oberhalterung sowie die Befestigungshalterung das Kabel. Durchs Zusammenwirken der flexiblen selbstnivellierenden Schicht sowie flexiblen Sperrschicht wird das Kabel begrenzt und fixiert, um das Gehäuse zu blockieren, was die Abdichtung des Gehäuses erheblich verbessert wird, so dass das Gerät nicht leicht zu korrodieren ist und kleine Tiere nicht leicht in das Gerät eindringen können. Ein Kurzschluss der Geräteentladung tritt nicht häufig auf, was die Lebensdauer des Geräts erheblich verlängert, den Wartungsaufwand des Geräts sowie die Wartungsschwierigkeiten des Wartungspersonals erheblich reduziert, die Wartungseffizienz des Wartungspersonals verbessert.

The beneficial effects of the utility model over the prior art are:

• By turning the screw and the ring nut, the utility model secures the mounting bracket on one side of the top bracket, or through the top bracket and the mounting bracket, the cable. Through the cooperation of the flexible self-leveling layer and flexible barrier layer, the cable is limited and fixed to block the case, which greatly improves the sealing of the case, so that the device is not easy to corrode and small animals cannot easily enter the device . Device discharge short circuit does not occur frequently, which greatly extends the life of the device, greatly reduces the maintenance effort of the device, as well as the maintenance difficulties of the maintenance personnel, improve the maintenance efficiency of the maintenance personnel.

character list

• 1 Fig. 12 is a schematic representation of the structure of the utility model.
• 2 Fig. 14 is a front view of the utility model with the baffle plate removed.
• 3 Fig. 14 is a rear view of the utility model when the cable is connected to the top bracket.
• 4 Fig. 13 is a front view of the upper bracket of the utility model;
• 5 is a top view 2 ;
• 6 Fig. 12 is a plan view of the case in the utility model;
• 7 Fig. 12 is an enlarged view of part A 5 ;
• 8th Fig. 12 is an enlarged view of part B 5 .

1.

Ablenkblech;

2.

Befestigungshalterungen;

3.

Schraube;

4.

Durchgangsschlitz;

5.

Kabel;

6.

Oberhalterung;

7.

Gehäuse;

8.

Gummimanschette;

9.

Griffverschluss;

10.

Installationshohlraum;

11.

Schraubring; 1

2.

Oberschlitz;

13.

flexible selbstnivellierende Schicht;

14.

flexible Sperrschicht;

15.

rutschfestes konvexes Muster.

In the figures:

1.

baffle;

2.

mounting brackets;

3.

Screw;

4.

through slot;

5.

Cable;

6.

upper bracket;

7.

Housing;

8th.

rubber sleeve;

9.

handle lock;

10

installation cavity;

11.

screw ring; 1

2.

top slot;

13.

flexible self-leveling layer;

14

flexible barrier layer;

15

non-slip convex pattern.

Specific Embodiments

The technical solutions in the embodiments of the utility model are described below clearly and fully in conjunction with the accompanying drawings of the embodiments of the utility model to make them more complete. Of course, the described embodiments are only a part of the embodiments of the utility model and do not represent all of them. Starting from the embodiments of the present utility model, all other embodiments achieved by a person skilled in the art without creative work fall within the scope of the present utility model.

Referring to the 1-8 the utility model provides the following technical solution: A moisture-barrier structure on variable high and low voltage sides of a PV generator junction box comprises a housing (7), an installation cavity (10) being provided inside the housing (7), and the housing (7) has a top slot (12) at the top, the housing (7) at the top near the top slot (12) having top brackets (6) on both sides, opposite two top brackets (6) on the other side having two fastening brackets (2) are installed with two screws (3) symmetrically installed between mounting brackets (2) and top brackets (6), one end of the screw (3) being screwed with a screw ring (11) with a through slot (4) near the Screw (3) is provided on the side of the upper bracket (6), wherein a cable (5) is mounted in an inner recess of the mounting bracket (2), one end of the Cable (5) extends through the top slot (12) into the interior of the installation cavity (10). Place the cable 5 between the mounting bracket 2 and the top bracket 6, insert the screw 3 into the top bracket 6 between the through slot 4 and the mounting bracket 2, screw the ring nut 11 and screw 3 together to fix the mounting bracket 2; the fixing bracket 2 and the upper bracket 6 fix one end of the cable 5 by pressing against to fix the cable 5 .

Furthermore, the installation cavity 10 is filled with a flexible self-leveling layer 13, the flexible self-leveling layer 13 being made of polymeric flexible sealing material TS-68.

Further, a flexible barrier layer 14 is filled between the flexible self-leveling layer 13 and the cable 5, the flexible self-leveling layer consisting of flame retardant silicone barrier adhesive TS-42 and silicone rubber insulating adhesive TS-40.

Further, the baffle 1 is rotatably connected to one side of the housing 7, whereby the installation cavity 10 on one side of the housing 7 is easily shielded.

Furthermore, the deflector plate 1 is equipped with a handle lock 9, the handle lock 9 enabling the deflector plate 1 to be closed easily.

Further, the grip fastener 9 is provided with a rubber boot 8, and the rubber boot 8 has a non-slip convex pattern 15 formed on its surface, whereby the rubber boot 8 and the non-slip con vexe patterns 15 allow the handle lock 9 to be pulled easily.

The working principle and use process of the utility model: When the utility model is in use, the rubber sleeve 8 and the non-slip convex pattern 15 cooperate to make the handle fastener 9 easy to pull. The handle lock 9 is then opened, the baffle 1 is then pulled to open the baffle 1; place the cable 5 between the mounting bracket 2 and the top bracket 6, insert the screw 3 into the top bracket 6 between the through slot 4 and the mounting bracket 2, screw the ring nut 11 and screw 3 together to fix the mounting bracket 2; the fixing bracket 2 and the upper bracket 6 fix one end of the cable 5 by pressing against it and the device to be fixed is inserted inside the installation cavity 10, connecting the device to the cable 5. After connecting the cable 5, close the baffle 1 and inject the TS-68 polymeric flexible sealing material into the interior of the installation cavity 10, so that the TS-68 polymeric flexible sealing material will be self-leveling and allowed to solidify, thereby the flexible self-leveling layer 13 is formed; TS-42 flame retardant silicone barrier adhesive and TS-40 silicone rubber insulating adhesive are injected into the gap between the flexible self-levelling layer 13 and the cable 5 to form the flexible barrier layer 14 to completely block the housing 7 side.

It is important to note that in this text, relational terms such as "first" and "second" are used only to distinguish one entity or process from another, without necessarily any such actual relationship or sequence between those entities or processes to presuppose or imply. Furthermore, the terms "including", "comprising" or any variant thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a number of elements comprises not only those elements but also includes other elements not expressly listed or also other elements intended to be included for the purposes of the process, method, article or device, elements or even elements inherent in such process, method, article or device.

Although embodiments of the utility model have been illustrated and described, those skilled in the art will understand that numerous variations, modifications, substitutions and alterations of these embodiments are possible without departing from the principle and spirit of the utility model, the scope of which is defined by the appended claims and their correspondence is limited.

Claims (6)

A moisture barrier structure on variable high and low voltage sides of a PV generator junction box, characterized in that it comprises a housing (7), an installation cavity (10) being provided inside the housing (7), and the housing (7) at the top a top slot (12), the housing (7) having top brackets (6) on both sides in the vicinity of the top slot (12), with two mounting brackets (2) installed opposite to two top brackets (6) on the other side, two screws (3) are symmetrically placed between mounting brackets (2) and top brackets (6), one end of the screw (3) being screwed to a screw ring (11) with a through slot (4) near the screw (3 ) is provided on the side of the upper bracket (6), wherein a cable (5) is mounted in an inner recess of the mounting bracket (2), wherein one end of the cable (5) through the upper slot (12) extends into the interior of the installation cavity (10). A moisture barrier structure on variable high and low voltage sides of a PV array junction box claim 1 , characterized in that the installation cavity (10) is filled with a flexible self-leveling layer (13). A moisture barrier structure on variable high and low voltage sides of a PV array junction box claim 2 , characterized in that a flexible barrier layer (14) is filled in between the flexible self-levelling layer (13) and the cable (5). A moisture barrier structure on variable high and low voltage sides of a PV array junction box claim 3 , characterized in that the baffle (1) is rotatably connected to one side of the housing (7). A moisture barrier structure on variable high and low voltage sides of a PV array junction box claim 4 , characterized in that the baffle (1) is equipped with a handle lock (9). A moisture barrier structure on variable high and low voltage sides of a PV array junction box claim 5 , characterized in that the grip fastener (9) is provided with a rubber boot (8), and the rubber boot (8) has a non-slip convex pattern (15) formed on its surface.

Images