Installation structure for photovoltaic power bus access

Abstract

The utility model relates to the technical field of aluminum smelting, and provides a photovoltaic power bus access mounting structure, which comprises a supporting component, protection parts are fixedly connected to the upper and lower parts of the side surface of the supporting part; a direct current transmission part is fixedly connected in the protection part; and the direct current transmission part in the upper protection part and the direct current transmission part in the lower protection part are respectively a positive electrode and a negative electrode. According to the utility model, the installation of the bus of the photovoltaic access electrolytic direct current system becomes simple and fast, complex bus installation procedures and related parts can be omitted, the bus installation period is saved, the bus is convenient to dismantle, and time, labor and investment are saved.

Description

Technical Field

[0001] The utility model relates to an installation structure for accessing a photovoltaic electric busbar, and belongs to the technical field of aluminum smelting. Background Art

[0002] In the process of photovoltaic access to the electrolytic DC system, since the newly built photovoltaic power generation of electrolytic aluminum enterprises is basically distributed photovoltaic, the photovoltaic panels are arranged in the open space or roof of the factory area, resulting in a long transmission distance from the DC intelligent router to the electrolytic DC system. In order to collect the DC power of the DC routers in each area and transmit it to the electrolytic DC busbar, transmission media such as cables, tubular busbars, copper busbars or aluminum busbars can be used. Among these transmission media, considering economy and safety, it is more appropriate to use aluminum busbars for transmission.

[0003] The traditional busbar installation in the electrolytic aluminum industry is generally carried out in the form of bracket + insulator + fixing. In view of the requirements of process parameters, this busbar installation structure requires a large busbar cross-section and a large number of roots, which makes the construction complicated. The direct current of the photovoltaic power access electrolytic DC system needs to be reduced in voltage due to the technical limitations of the DC / DC direct current intelligent circuit. For example, the Chinese utility model patent with patent number CN201420644389.9 discloses a device for reducing the voltage drop of the aluminum busbar.

[0004] However, the inventor of this utility model patent found that the prior art has the following problems: the rated output voltage of a single device is generally limited to about 1500V, and the rated output current is generally limited to about 5000A, which is a DC low voltage and low current. When aluminum busbars are used for transmission, the cross-section of the aluminum busbars is generally small, and one busbar for each positive and negative pole can meet the current transmission requirements. Therefore, for this type of current transmission busbar, a simple and convenient installation structure is needed. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an installation structure for accessing a photovoltaic busbar, which can eliminate the complicated busbar installation process and related components, save the busbar installation cycle, and also facilitate busbar removal, saving time, effort and investment.

[0006] The utility model is realized through the following technical solutions.

[0007] The utility model provides an installation structure for accessing a photovoltaic busbar, comprising a supporting component; the upper and lower parts of the side surfaces of the supporting component are respectively fixedly connected with protective components; a direct current transmission component is fixedly connected inside the protective component; the direct current transmission component in the upper protective component and the direct current transmission component in the lower protective component are respectively a positive pole and a negative pole; in the direct current transmission component in the upper protective component and the direct current transmission component in the lower protective component, the polarity of the internally connected aluminum busbars is opposite; the protective component comprises an upper end cover, a vertical plate and a bottom plate; vertical vertical plates are fixedly connected at both ends of the upper surface of the bottom plate; and the upper end cover is fixedly connected to the upper surface of the vertical plate.

[0008] The supporting component comprises a first channel steel and a second channel steel; the two ends of one side of the vertically placed first channel steel are fixedly connected with the second channel steel, and the second channel steel is cross-connected with the first channel steels with equal spacing.

[0009] The support component is fixedly connected to the protection component through a support base located on the opposite side of the second channel steel; a reinforcing angle iron is fixed at the corner position of the support base.

[0010] The reinforcing angle iron is an L-shaped angle steel with a cross section of 90 degrees.

[0011] The lower surface of the bottom plate is fixedly connected with a supporting base.

[0012] The DC power transmission component comprises an aluminum busbar and a porcelain bottle insulator; the upper end surface of the porcelain bottle insulator is fixedly connected with the aluminum busbar; a through hole with a countersunk hole is provided on the aluminum busbar; and threaded countersunk holes are provided on the upper and lower end surfaces of the porcelain bottle insulator.

[0013] One end of the first double-headed screw is fixedly connected to the upper end of the porcelain bottle insulator, and the other end passes through the through hole of the aluminum busbar, and the first nut is threadedly connected to the end of the first double-headed screw in the countersunk hole of the aluminum busbar.

[0014] One end of the second double-headed screw passes through the installation hole of the channel steel cross-arm insulator and is fixedly connected to the lower end of the porcelain bottle insulator, and the other end is fixedly connected to the second nut.

[0015] The beneficial effect of the utility model is that compared with the existing electrolytic aluminum busbar installation technology, the busbar installation of the photovoltaic access electrolytic DC system can be simple and quick, which can not only avoid the complicated busbar installation process and related components, save the busbar installation cycle, but also facilitate the busbar removal, saving time, labor and investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a side view of the utility model in the direction of A;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3This is the structural diagram of the fixed connection part of the aluminum busbar;

[0019] In the figure: 1-support component, 11-first channel steel, 12-second channel steel, 13-support base, 14-reinforcement angle iron, 2-protection component, 21-upper end cover, 22-vertical plate, 23-bottom plate, 3-DC power transmission component, 31-aluminum busbar, 32-porcelain bottle insulator, 33-first double-headed screw, 34-second double-headed screw, 35-first nut, 36-second nut. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0021] The first embodiment of the utility model relates to Figures 1 to 3 The installation structure for accessing a photovoltaic busbar is shown, comprising a support component 1; a protective component 2 is fixedly connected to the upper and lower parts of the side of the support component 1; a DC transmission component 3 is fixedly connected inside the protective component 2; the DC transmission component 3 in the upper protective component 2 and the DC transmission component 3 in the lower protective component 2 are respectively positive and negative. The support component 1 plays an overall supporting role, and the protective component 2 can provide physical protection for the DC transmission component 3 to prevent damage; it can also provide safety protection to prevent electric shock accidents. The protective component 2 includes an upper end cover 21, a vertical plate 22 and a bottom plate 23; the two ends of the upper surface of the bottom plate 23 are fixedly connected to the vertical vertical plates 22; the upper surface of the vertical plate 22 is fixedly connected to the upper end cover 21. The bottom plate 23 is used to bear the weight of the aluminum busbar 31 and the porcelain bottle insulator 32, and is used to fix the porcelain bottle insulator 32; the vertical plate 22 plays a side protection role; the upper end cover 21 plays a top protection role, and can also prevent wind, rain and dust. The lower surface of the bottom plate 23 is fixedly connected with the support base 13 , and the entire protection component 2 is fixed on the support base 13 .

[0022] The second embodiment of the utility model is roughly the same as the first embodiment, mainly in the preferred scheme of the support component. The support component 1 includes a first channel steel 11 and a second channel steel 12; the first channel steel 11 placed vertically is fixedly connected to the second channel steel 12 at both ends of one side, and the second channel steel 12 is connected across the first channel steel 11 with equal spacing. The first channel steel 11 is placed in a vertical array, which determines the installation position of the support base 13, and the second channel steel 12 is placed horizontally and connected to the first channel steel 11, which can improve the strength of the first channel steel 11 array.

[0023] The support component 1 is fixedly connected to the protection component 2 through the support base 13 located on the opposite side of the second channel steel 12; a reinforcing angle iron 14 is fixed to the corner position of the support base 13. The reinforcing angle iron 14 mainly plays a role in fixing and connecting the support base 13 and the first channel steel 11; the support base 13 bears the overall weight of the DC power transmission component 3.

[0024] The reinforcing angle iron 14 is an L-shaped angle steel with a cross section of 90 degrees, which can ensure that the supporting base 13 is vertically connected to the first channel steel 11.

[0025] The third embodiment of the utility model is roughly the same as the first embodiment, mainly in that it is further optimized. The DC power transmission component 3 includes an aluminum busbar 31 and a porcelain bottle insulator 32; the upper end surface of the porcelain bottle insulator 32 is fixedly connected to the aluminum busbar 31; a through hole with a countersunk hole is provided on the aluminum busbar 31; and threaded countersunk holes are provided on the upper and lower end surfaces of the porcelain bottle insulator 32. The specification of the aluminum busbar 31 is 75x75mm, which is used to transmit direct current, and the specification of the porcelain bottle insulator 32 is WX-02, which plays an insulating and isolating role. The number of prefabricated bolt holes on the aluminum busbar 31 can be determined according to the calculated cross-sectional size of the aluminum busbar 31; the form of the porcelain bottle insulator 32 can be selected according to the number of bolt holes on the aluminum busbar 31. The standard product or the prefabricated specific form product can be selected.

[0026] One end of the first double-ended screw 33 is fixedly connected to the upper end of the porcelain bottle insulator 32, and the other end passes through the through hole of the aluminum busbar 31, and the first nut 35 is threadedly connected to the end of the first double-ended screw 33 in the countersunk hole of the aluminum busbar 31. The first double-ended screw 33 is a stainless steel double-ended screw of M16x100, which is used to connect the aluminum busbar 31 and the porcelain bottle insulator 32, and the first nut 35 fixes and presses the aluminum busbar 31.

[0027] One end of the second double-ended screw 34 passes through the mounting hole of the channel steel cross-arm insulator and is fixedly connected to the lower end of the porcelain bottle insulator 32, and the other end is fixedly connected to the second nut 36. The second double-ended screw 34 is a stainless steel double-ended screw of M16x60, which is used to connect the porcelain bottle insulator 32 and the bottom plate 23; the specifications of the mounting hole of the channel steel cross-arm insulator are Adopt the method of on-site drilling.

[0028] In the DC power transmission component 3 in the upper protection component 2 and the DC power transmission component 3 in the lower protection component 2, the internally connected aluminum busbars 31 have opposite polarities, that is, one aluminum busbar 31 is the positive electrode and the other aluminum busbar 31 is the negative electrode, which are connected to form a loop after passing through the load.

[0029] Based on the above, a typical working process of the utility model is:

[0030] like Figure 1-3 As shown, when the utility model is implemented, the porcelain bottle insulator 32 is first fixed to the bottom plate 23 by the second double-headed screw 34, and then the aluminum busbar 31 is fixed to the porcelain bottle insulator 32 by the first double-headed screw 33, and the upper end cover 21 is covered, and the load is connected, and then the power can be turned on for trial operation.

Claims

1. A photovoltaic busbar access installation structure, comprising a support component (1), characterized in that: The upper and lower parts of the side of the support component (1) are respectively fixedly connected with the protection component (2); the protection component (2) is fixedly connected with a direct current transmission component (3); the direct current transmission component (3) in the upper protection component (2) and the direct current transmission component (3) in the lower protection component (2) are positive and negative poles respectively; the polarities of the aluminum busbars (31) connected internally in the direct current transmission component (3) in the upper protection component (2) and the direct current transmission component (3) in the lower protection component (2) are opposite; the protection component (2) comprises an upper end cover (21), a vertical plate (22) and a bottom plate (23); the two ends of the upper surface of the bottom plate (23) are fixedly connected with the vertical vertical plates (22); the upper surface of the vertical plate (22) is fixedly connected with the upper end cover (21).

2. The photovoltaic busbar access installation structure according to claim 1, characterized in that: The support component (1) comprises a first channel steel (11) and a second channel steel (12); the first channel steel (11) is placed vertically and has two ends on one side fixedly connected to the second channel steel (12), and the second channel steel (12) is cross-connected to the first channel steels (11) at equal intervals.

3. The photovoltaic busbar access installation structure according to claim 2, characterized in that: The support component (1) is fixedly connected to the protection component (2) via a support base (13) located on the opposite side of the second channel steel (12); a reinforcing angle iron (14) is fixed at the corner position of the support base (13).

4. The photovoltaic busbar access installation structure according to claim 3, characterized in that: The reinforcing angle iron (14) is an L-shaped angle steel with a cross section of 90 degrees.

5. The photovoltaic busbar access installation structure according to claim 1, characterized in that: The lower surface of the bottom plate (23) is fixedly connected to a support base (13).

6. The photovoltaic busbar access installation structure according to claim 1, characterized in that: The DC power transmission component (3) comprises an aluminum busbar (31) and a porcelain bottle insulator (32); the upper end surface of the porcelain bottle insulator (32) is fixedly connected to the aluminum busbar (31); a through hole with a countersunk hole is provided on the aluminum busbar (31); and threaded countersunk holes are provided on the upper and lower end surfaces of the porcelain bottle insulator (32).

7. The photovoltaic busbar access installation structure according to claim 6, characterized in that: One end of the first double-headed screw (33) is fixedly connected to the upper end of the porcelain bottle insulator (32), and the other end passes through the through hole of the aluminum busbar (31), and the first nut (35) is threadedly connected to the end of the first double-headed screw (33) in the counterbore of the aluminum busbar (31).

8. The photovoltaic busbar access installation structure according to claim 6, characterized in that: One end of the second double-headed screw (34) passes through the channel steel cross-arm insulator mounting hole and is fixedly connected to the lower end of the porcelain bottle insulator (32), and the other end is fixedly connected to the second nut (36).

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