Quality detection device for photovoltaic junction box

Abstract

The utility model belongs to the technical field of photovoltaic junction box detection, and particularly relates to a photovoltaic junction box quality detection device which comprises a detection box, a baffle is fixedly connected to the position, close to the front side, of the bottom face of an inner cavity of the detection box, a sealing door is assembled on the front side wall of the detection box, and an annular pipe is assembled on the top face of the detection box. Four flow guide pipes are fixedly connected to the lower side of the side wall of the annular pipe, penetrate through the detection box and are located at the corners of the detection box, a plurality of nozzles are fixedly connected to the side walls of the flow guide pipes, a clamping piece is arranged on the rear wall of an inner cavity of the detection box, and two material boxes are arranged on the top face of the detection box; and a fan is assembled on the left side wall of the detection box. According to the utility model, a circular eddy current can be formed in the test box, multi-aspect tests are carried out on the junction box, and the phenomenon that local tests are not in place is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic junction box detection technical field, specifically relates to a photovoltaic junction box quality detection device. BACKGROUND

[0002] The photovoltaic junction box is an important component in the photovoltaic power generation system. It is mainly used for connecting photovoltaic cell assembly, and its functions include: first, it can realize the series connection or parallel connection between photovoltaic cell assemblies, so that different voltage and current output requirements can be met; second, it can protect the photovoltaic cell assembly and effectively prevent the battery from being broken by reverse current.

[0003] The photovoltaic junction box is generally in the external environment and is used for a long time in various environments. Therefore, it is necessary to test the durability of the junction box to determine the durability index of the junction box.

[0004] However, the test device for the junction box in the prior art has less test content, and when simulating the natural environment during the test process, the contact surface of water and dust with the junction box is not uniform enough, which can easily cause the local structure of the junction box to be not tested properly, thereby reducing the test effect. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a photovoltaic junction box quality detection device, which can form a circular vortex inside the test box and test the junction box from multiple aspects to avoid the phenomenon of local testing not being in place.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A photovoltaic junction box quality detection device includes a detection box, a baffle is fixedly connected to the bottom surface of the inner cavity of the detection box near the front side, a sealing door is assembled to the front side wall of the detection box, a ring-shaped pipe is assembled to the top surface of the detection box, four flow guide pipes are fixedly connected to the side wall of the ring-shaped pipe on the lower side, the flow guide pipes penetrate through the detection box, the flow guide pipes are located at the corners of the detection box, a plurality of nozzles are fixedly connected to the side wall of the flow guide pipes, a clamping piece is arranged on the rear wall of the inner cavity of the detection box, two material boxes are arranged on the top surface of the detection box, and a fan is assembled to the left side wall of the detection box.

[0008] The clamping piece includes four support plates fixedly connected to the rear wall of the inner cavity of the detection box, a plurality of screw holes are formed in the top surface of each support plate, a screw rod is threadedly connected to each screw hole, and a conical block is fixedly connected to the opposite end of each screw rod.

[0009] The material box comprises a hopper fixedly connected to the top surface of the detection box, the top end of the hopper is conical, the top end of the hopper is provided with a cover plate, the top surface of the cover plate is fixedly connected with a handle, the bottom end of the hopper is fixedly connected with a discharging pipe, the other end of the discharging pipe is fixedly connected with an annular pipe, and the side wall of the discharging pipe is provided with a pump.

[0010] The side wall of the discharging pipe is provided with a control valve.

[0011] One of the side walls of the discharging pipe is fixedly connected with a shunt pipe, the other end of the shunt pipe is communicated with the inner cavity of the detection box, and the connection position of the shunt pipe and the discharging pipe is provided with a three-way valve.

[0012] The nozzles are distributed towards the center side of the detection box.

[0013] The utility model achieves the following technical effects:

[0014] The detection device for the photovoltaic junction box is characterized in that the detection box, the flow guide pipe, the nozzle and the material box are cooperated with each other, the flow guide pipes are arranged at the four corners of the detection box, the nozzles on the four flow guide pipes are distributed in a circular manner, when water or dust is sprayed, the circular vortex is formed in the detection box, the junction box is tested in multiple aspects, the local test is avoided, and the test effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model embodiment;

[0016] Figure 2 is a structure schematic view of the oblique view of the utility model embodiment;

[0017] Figure 3 is a structure schematic view of the nozzle direction of the utility model embodiment;

[0018] Figure 4 is an enlarged view of A in the utility model embodiment; Figure 2

[0019] Figure 5 is an enlarged view of B in the utility model embodiment. Figure 1

[0020] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0021] 1, detection box; 2, baffle; 3, sealing door; 4, annular pipe; 5, flow guide pipe; 6, nozzle; 7, hopper; 8, cover plate; 9, discharging pipe; 10, pump; 11, control valve; 12, shunt pipe; 13, three-way valve; 14, support plate; 15, screw rod; 16, conical block; 17, fan. DETAILED DESCRIPTION

[0022] ​​In order to make the purpose and advantages of the utility model more clear and understandable, the utility model is specifically described below in combination with embodiments. It should be understood that the following text is merely used to describe one or several specific embodiments of the utility model and does not strictly limit the scope of protection specifically requested by the utility model.

[0023] As shown in Figures 1-5 A photovoltaic junction box quality detection device, comprising a detection box 1, a baffle 2 is fixedly connected to the bottom surface of the inner cavity of the detection box 1 near the front side, a sealing door 3 is assembled to the front side wall of the detection box 1, a ring-shaped pipe 4 is assembled to the top surface of the detection box 1, four flow guide pipes 5 are fixedly connected to the side wall of the ring-shaped pipe 4 on the lower side, the flow guide pipes 5 penetrate through the detection box 1, the flow guide pipes 5 are located at the corners of the detection box 1, a plurality of nozzles 6 are fixedly connected to the side wall of the flow guide pipes 5, a clamping piece is arranged on the rear wall of the inner cavity of the detection box 1, two material boxes are arranged on the top surface of the detection box 1, and a fan 17 is assembled to the left side wall of the detection box 1.

[0024] As shown in Figure 5 The clamping piece comprises four support plates 14 fixedly connected to the rear wall of the inner cavity of the detection box 1, a plurality of screw holes are formed in the top surface of each support plate 14, a screw rod 15 is threadedly connected to each screw hole, and a conical block 16 is fixedly connected to the opposite end of each screw rod 15.

[0025] The conical block 16 is made of rubber material, has good elasticity, can improve the friction force, and can reduce the contact area with the junction box when the conical tip contacts the junction box.

[0026] As shown in Figure 2 and Figure 3 The material box comprises a hopper 7 fixedly connected to the top surface of the detection box 1, the top end of the hopper 7 is conical, a cover plate 8 is arranged on the top end of the hopper 7, a handle is fixedly connected to the top surface of the cover plate 8, a discharge pipe 9 is fixedly connected to the bottom end of the hopper 7, the other end of the discharge pipe 9 is fixedly connected to the ring-shaped pipe 4, and a pump 10 is assembled to the side wall of the discharge pipe 9. A control valve 11 is assembled to the side wall of the discharge pipe 9.

[0027] The material box is divided into two, one is used for storing water flow and the other is used for storing dust, which is used to simulate the use condition in different environments, so as to increase the detection effect of the junction box; in addition, the discharge amount of the hopper 7 can be controlled by arranging the control valve 11, so as to adapt to different degrees or grades of environmental simulation conditions.

[0028] As shown in Figure 2 and Figure 3 One of the discharge pipes 9 is fixedly connected with a shunt pipe 12, the other end of the shunt pipe 12 is communicated with the inner cavity of the detection box 1, and a three-way valve 13 is assembled to the connection between the shunt pipe 12 and the discharge pipe 9.

[0029] The water flow collected in the cavity of the detection box 1 can be pumped into the hopper 7 by the shunt pipe 12, and a filter screen is arranged at one end of the shunt pipe 12, so as to filter the residual dust in the water flow, thereby improving the utilization rate of the water flow.

[0030] As shown in the figure, the nozzles 6 are distributed towards the center side of the detection box 1. Figure 3

[0031] By arranging the guide pipes 5 at the four corners of the detection box 1, the directions of the nozzles 6 on the four guide pipes 5 are circularly distributed, so that when the water or dust is sprayed, a circular vortex can be formed in the detection box 1, and the junction box can be tested from multiple aspects, thereby avoiding the phenomenon that some local tests are not in place, and the testing effect is effectively improved.

[0032] The working principle of the utility model is as follows: first, the junction box is placed between the support plates 14, and the tapered blocks 16 are driven by the screw rods 15 to abut against the junction box, a plurality of screw rods 15 are arranged, so that the uneven position of the junction box can be fixed, and then dust and water flow are injected into the two hoppers 7 respectively;

[0033] When the junction box needs to be tested for waterproofness, the pump 10 on one side is started to inject water flow into the annular pipe 4 and the guide pipe 5, and the water flow is sprayed from the nozzles 6 to impact the junction box, and at the same time, the fan 17 is started to inject air flow into the detection box 1 to simulate rainy weather, and the water flow cooperates with the air flow to form a vortex around the junction box and blow the junction box, so as to detect the waterproof performance of the junction box.

[0034] When the junction box needs to be tested for dust resistance, the pump 10 on the other side can be started to inject dust into the detection box 1, and the fan 17 can be started to simulate the use of the junction box in a dusty area, thereby increasing the detection effect of the junction box.

[0035] The above is only the preferred embodiment of the utility model, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements should also be regarded as the protection range of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the field without special description and limitation.​

Claims

1. A photovoltaic junction box quality detection device, characterized in that: The utility model relates to a detection box, which comprises a detection box (1), a baffle (2) fixedly connected to the bottom surface of the inner cavity of the detection box (1) near the front side, a sealing door (3) assembled to the front wall of the detection box (1), a ring-shaped pipe (4) assembled to the top surface of the detection box (1), four flow guide pipes (5) fixedly connected to the side wall of the ring-shaped pipe (4) on the lower side, the flow guide pipes (5) penetrating through the detection box (1), the flow guide pipes (5) located at the corners of the detection box (1), a plurality of nozzles (6) fixedly connected to the side wall of each flow guide pipe (5), a clamping piece arranged on the back wall of the inner cavity of the detection box (1), two material boxes arranged on the top surface of the detection box (1), and a fan (17) assembled to the left wall of the detection box (1). 2.The photovoltaic junction box quality detection device according to claim 1, characterized in that: The clamping piece comprises four support plates (14) fixedly connected to the back wall of the inner cavity of the detection box (1), a plurality of screw holes formed in the top surface of each support plate (14), and a screw rod (15) threadedly connected to each screw hole, one end of the screw rod (15) opposite to the other end being fixedly connected to a conical block (16). 3.The photovoltaic junction box quality detection device according to claim 1, characterized in that: The material box comprises a hopper (7) fixedly connected to the top surface of the detection box (1), the top end of the hopper (7) being conical, a cover plate (8) arranged on the top end of the hopper (7), a handle fixedly connected to the top surface of the cover plate (8), a discharge pipe (9) fixedly connected to the bottom end of the hopper (7), the other end of the discharge pipe (9) being fixedly connected to the ring-shaped pipe (4), and a pump (10) assembled to the side wall of the discharge pipe (9).

4. The photovoltaic junction box quality detection device according to claim 3, characterized in that: The side wall of the discharge pipe (9) is provided with a control valve (11).

5. The photovoltaic junction box quality detection device according to claim 3, characterized in that: The side wall of one of the discharge pipes (9) is fixedly connected to a shunt pipe (12), the other end of the shunt pipe (12) being in communication with the inner cavity of the detection box (1), and a three-way valve (13) being assembled to the connection between the shunt pipe (12) and the discharge pipe (9).

6. The photovoltaic junction box quality detection device according to claim 1, characterized in that: The nozzles (6) are distributed towards one side of the center of the detection box (1).

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