Photovoltaic string power screening detector

Abstract

The utility model relates to the field of photovoltaic technology, in particular to a photovoltaic string power screening detector which comprises a detector shell, a detector cavity is formed in the front end wall of the detector shell, a limiting plate and a chuck are installed on the inner side of the detector cavity, coupling screws are arranged on the front end walls of the upper side and the lower side of the limiting plate in a penetrating mode, and the coupling screws are connected with the limiting plate. A penetrating opening is formed in the end wall of the limiting plate in a penetrating mode, a fixing column is installed on the end wall of the side, close to the penetrating opening, of the limiting plate, a screw is arranged in the fixing column in a penetrating mode, and a transverse piece is installed at the top end of the fixing column. According to the utility model, the limiting plate is assembled on the instrument shell through the screws, so that the internal area of the instrument cavity is conveniently separated, instruments such as an alternating current meter, a voltmeter and an ampere meter are stored in a classified manner, the power of a detected photovoltaic module is conveniently acquired and calculated subsequently, and the limiting plate is convenient to disassemble and assemble, so that the subsequent maintenance treatment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to a photovoltaic string power screening detector. Background Art

[0002] Since the output voltage of a single solar cell is low, and the electrodes of unpackaged cells are easily detached due to environmental influences, a certain number of single cells must be sealed into solar cell modules in series and parallel to avoid corrosion of the cell electrodes and interconnections. When photovoltaic strings are used, the photovoltaic panels accumulate dust, the strings are matched, and the string connections are lost. At this time, the voltage and current of the photovoltaic strings are collected, and the power loss is calculated to obtain the power of the photovoltaic strings. This detector is used to collect the power of photovoltaic strings, and can distinguish the voltage, current and power of photovoltaic strings under the same light and temperature.

[0003] The testing instrument is generally rectangular in shape, with an internal cavity and a chuck structure for assembling electrical components for placing testing instrument components, such as voltmeters and ammeters. However, after the instrument components are assembled, they will be connected to the wiring harness. When in use, the wiring harness is prone to being arranged in a messy manner and becoming tangled, which can easily cause short circuits and is not conducive to subsequent disassembly and maintenance of the instrument components. Utility Model Content

[0004] The utility model aims to provide a photovoltaic string power screening detector.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A photovoltaic string power screening detector comprises an instrument housing, a front end wall of the instrument housing is provided with an instrument cavity, a limit plate and a chuck are installed on the inner side of the instrument cavity, upper and lower front end walls of the limit plate are both penetrated by even screws, the end wall of the limit plate is penetrated by a through hole, a solid column is installed on the end wall of the limit plate close to the through hole, a screw is penetrated inside the solid column, a cross piece is installed on the top of the solid column, a limit column is installed on the side end wall of the cross piece, a voltmeter is installed on the end side of the chuck, buckles are installed on the left and right ends of the instrument housing close to the top of the instrument cavity, a holder is installed on the end side of the buckle, a seat cavity is provided inside the holder, a mesh is provided on the bottom end wall of the holder, and a thin sheet is arranged on the side end of the holder.

[0007] Preferably, the instrument housing and the limiting plate are fixedly connected, and the limiting plate is threadedly connected to the instrument housing via screws.

[0008] Preferably, the limiting plate and the solid column are fixedly connected, and the solid column and the screw rod are threadedly connected.

[0009] Preferably, the screw rod is rotationally connected to the cross piece, and the cross piece is fixedly connected to the limiting column.

[0010] Preferably, the buckle is fixedly connected to the instrument housing, and the instrument housing is snap-connected to the card holder via the buckle.

[0011] Preferably, the seat cavity and the mesh holes are communicated with each other, and the card seat and the sheet are fixedly connected.

[0012] The utility model has at least the following beneficial effects:

[0013] 1. Connect the limit plate assembly to the instrument housing through screws, which is convenient for separating the internal area of ​​the instrument cavity and storing instruments, such as AC meters, voltmeters, and ammeters, in a classified manner, so as to facilitate the subsequent collection and calculation of the power of the photovoltaic modules. The limit plate is easy to disassemble and assemble, which is convenient for subsequent maintenance and treatment. At the same time, the screw rotates, and the screw drives the transverse piece to move. The transverse piece moves, and the limit column moves. The end side of the limit column is used to wrap the connecting wire harness of the instrument. After the limit column approaches the end wall of the instrument housing, the wire harness wrapped around the limit column is limited. When in use, first rotate the transverse piece, and the transverse piece is turned out from the inside of the hole, and then the wire harness is wrapped around the limit column. Tighten the screw to make the transverse piece close to the end wall of the housing to limit the wire harness.

[0014] 2. The card holder is connected with the card holder through a buckle, which makes it easy to disassemble and assemble the card holder. The seat cavity of the card holder is used to add dry powder, such as activated carbon particles. The mesh is breathable and is used to dry and protect the instrument parts inside the instrument cavity. When the instrument parts are in use, they generate heat, which simply dries the dry powder in the seat cavity so that the dry powder can be used for as long as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the utility model;

[0017] Figure 2 for Figure 1 A left view schematic diagram of a limiting plate;

[0018] Figure 3 for Figure 1 A magnified schematic diagram of point A;

[0019] Figure 4 for Figure 1 An enlarged schematic diagram of point B.

[0020] In the figure: 1. instrument housing; 2. instrument cavity; 3. limit plate; 4. screw; 5. through-hole; 6. fixing column; 7. screw; 8. cross piece; 9. limit column; 10. chuck; 11. voltmeter; 12. buckle; 13. holder; 14. holder cavity; 15. mesh; 16. sheet. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] See also Figure 1-4 The utility model provides a technical solution for a photovoltaic string power screening detector:

[0023] Embodiment 1:

[0024] like Figure 1-4 As shown, a photovoltaic string power screening detector comprises an instrument housing 1, an instrument cavity 2 is provided on the front end wall of the instrument housing 1, a limit plate 3 and a chuck 10 are installed on the inner side of the instrument cavity 2, upper and lower front end walls of the limit plate 3 are penetrated by even screws 4, an end wall of the limit plate 3 is penetrated by a through hole 5, a fixed column 6 is installed on the end wall of the limit plate 3 near the through hole 5, a screw 7 is penetrated inside the fixed column 6, a cross piece 8 is installed on the top of the fixed column 6, a limit column 9 is installed on the side end wall of the cross piece 8, a voltmeter 11 is installed on the end side of the chuck 10, buckles 12 are installed on the left and right ends of the top of the instrument housing 1 near the instrument cavity 2, a holder 13 is installed on the end side of the buckle 12, a holder cavity 14 is provided inside the holder 13, a mesh 15 is provided on the bottom end wall of the holder 13, and a thin sheet 16 is arranged on the side end of the holder 13.

[0025] Embodiment 2:

[0026] Based on the first embodiment, Figure 1 and Figure 2As shown, the instrument housing 1 and the limit plate 3 are fixedly connected, and the limit plate 3 is threadedly connected to the instrument housing 1 through the screw 4, the limit plate 3 and the fixed column 6 are fixedly connected, and the fixed column 6 and the screw 7 are threadedly connected, the screw 7 and the cross piece 8 are rotatably connected, and the cross piece 8 and the limit column 9 are fixedly connected, and the limit plate 3 is connected to the instrument housing 1 through the screw 4, which is convenient for separating the internal area of ​​the instrument cavity 2 and storing the instrument parts such as the AC meter, the voltmeter, and the ammeter in a classified manner, so as to facilitate the subsequent collection and calculation of the detection of the photovoltaic group The power of the parts, and the feature of the limit plate 3 that is convenient for disassembly and assembly is convenient for subsequent maintenance and treatment. At the same time, the screw rod 7 rotates, and the screw rod 7 drives the transverse piece 8 to move. The transverse piece 8 moves, and drives the limit column 9 to move. The end side of the limit column 9 is used to wind the connecting wire harness of the instrument parts. After the limit column 9 is close to the end wall of the instrument housing 1, the wire harness wound by the limit column 9 is limited. When in use, first rotate the transverse piece 8, and the transverse piece 8 is turned out from the inside of the through-hole 5, and then the wire harness is wound around the limit column 9, and the screw 7 is tightened to allow the transverse piece 8 to approach the end wall of the housing 1 to limit the wire harness.

[0027] Based on the first embodiment, Figure 3 and Figure 4 As shown, the buckle 12 is fixedly connected to the instrument housing 1, and the instrument housing 1 is snapped with the base 13 through the buckle 12, the seat cavity 14 and the mesh 15 are communicated, and the base 13 is fixedly connected with the thin sheet 16. The buckle 12 is snapped with the base 13, which makes it convenient to disassemble and assemble the base 13. The seat cavity 14 of the base 13 is used to add dry powder, such as activated carbon particles. The mesh 15 is breathable and is used to dry and protect the instrument parts inside the instrument cavity 2. When the instrument parts are in use, they generate heat, and the thin sheet 16 absorbs the heat to simply dry the dry powder in the seat cavity 14, so that the dry powder can be used for as long as possible.

[0028] Working principle: The limit plate 3 is connected to the instrument housing 1 by screws 4, which is convenient for dividing the internal area of ​​the instrument cavity 2 and storing instruments in categories, such as AC meters, voltmeters, and ammeters. The voltmeter 11 can be a voltmeter or an ammeter, etc., which are instruments used to measure the power parameters of photovoltaic modules, which is convenient for subsequent collection and calculation of the power of the photovoltaic modules. The limit plate 3 is easy to disassemble and assemble, which is convenient for subsequent maintenance and treatment. At the same time, the screw 7 rotates, and the screw 7 drives the cross piece 8 to move. The cross piece 8 moves, which drives the limit column 9 to move. The end side of the limit column 9 is used to wrap the connecting harness of the instrument, and the limit column 9 is close to the end wall of the instrument housing 1. Finally, limit the wiring harness wrapped around the limit column 9. When in use, first rotate the cross piece 8, the cross piece 8 turns out from the inside of the through hole 5, and then wind the wiring harness around the limit column 9, tighten the screw 7, and let the cross piece 8 approach the end wall of the shell 1 to limit the wiring harness. It is connected with the card seat 13 through the buckle 12, which is convenient for disassembly and assembly of the card seat 13. The seat cavity 14 of the card seat 13 is used to add dry powder, such as activated carbon particles. The mesh 15 is breathable and is used to dry and protect the instrument parts inside the instrument cavity 2. When the instrument parts are in use, they generate heat, and the thin sheet 16 absorbs the heat to simply dry the dry powder in the seat cavity 14, so that the dry powder can be used for as long as possible.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A photovoltaic string power screening detector, comprising an instrument housing (1), characterized in that: The front end wall of the instrument housing (1) is provided with an instrument cavity (2), a limit plate (3) and a chuck (10) are installed inside the instrument cavity (2), the upper and lower front end walls of the limit plate (3) are penetrated by even screws (4), the end wall of the limit plate (3) is penetrated by a through hole (5), a fixed column (6) is installed on the end wall of the limit plate (3) near the through hole (5), a screw (7) is penetrated inside the fixed column (6), and a transverse plate (8) is installed on the top of the fixed column (6). A limiting column (9) is installed on the side end wall of the transverse piece (8), a voltmeter (11) is installed on the end side of the chuck (10), buckles (12) are installed on both the left and right ends of the top of the instrument housing (1) near the instrument cavity (2), a holder (13) is installed on the end side of the buckle (12), a seat cavity (14) is provided inside the holder (13), a mesh hole (15) is provided on the bottom end wall of the holder (13), and a thin sheet (16) is arranged on the side end of the holder (13).

2. A photovoltaic string power screening detector according to claim 1, characterized in that: The instrument housing (1) and the limiting plate (3) are fixedly connected, and the limiting plate (3) is threadedly connected to the instrument housing (1) via a screw (4).

3. A photovoltaic string power screening detector according to claim 1, characterized in that: The limiting plate (3) and the fixed column (6) are fixedly connected, and the fixed column (6) and the screw rod (7) are threadedly connected.

4. A photovoltaic string power screening detector according to claim 1, characterized in that: The screw rod (7) is rotationally connected to the transverse piece (8), and the transverse piece (8) is fixedly connected to the limiting column (9).

5. A photovoltaic string power screening detector according to claim 1, characterized in that: The buckle (12) is fixedly connected to the instrument housing (1), and the instrument housing (1) is clamped to the clamping seat (13) via the buckle (12).

6. A photovoltaic string power screening detector according to claim 1, characterized in that: The seat cavity (14) and the mesh (15) are communicated with each other, and the card seat (13) and the thin sheet (16) are fixedly connected.

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