Photovoltaic box transformer substation convenient for later inspection

Abstract

The utility model belongs to the technical field of photovoltaic box transformer substations, in particular to a photovoltaic box transformer substation convenient for later inspection, which comprises a photovoltaic box transformer substation shell, the photovoltaic box transformer substation shell comprises: a main frame which is a combination body formed by welding L-shaped steel; a bottom sheet metal part; a top sheet metal part; the box door sheet metal part is hinged to the front face of the main frame; the back sheet metal part is fixed on the back surface of the main frame; the two side edge sheet metal parts are installed on the left side and the right side of the main frame correspondingly; a component fixing frame; the driving mechanism is used for driving the top sheet metal part to turn over; according to the utility model, the top sheet metal part is installed in a turnover manner, and the driving mechanism can be started to drive the top sheet metal part to turn upwards during inspection, so that the top of the electrical equipment can be observed conveniently, a relatively large turnover space is not needed, the photovoltaic box transformer substation is suitable for most use scenes, and other devices around the photovoltaic box transformer substation shell are prevented from generating hindrance.

Description

Technical Field

[0001] This utility model belongs to the field of photovoltaic transformer substation technology, specifically relating to a photovoltaic transformer substation that facilitates subsequent inspection. Background Technology

[0002] A photovoltaic (PV) transformer box is a box-type transformer specifically designed for PV power generation systems. Its main function is to convert the high-voltage direct current generated by PV modules into AC current suitable for grid connection, while simultaneously regulating and monitoring voltage and current to ensure the stable operation of the power system. A PV transformer box consists of a transformer body, a high-voltage side circuit breaker, a low-voltage side circuit breaker, a current transformer, a power factor compensation device, and other components.

[0003] Existing photovoltaic transformer boxes are generally designed with heat-insulating materials and have doors. When performing routine inspections, staff need to go to the front of the transformer box to open the door. Although this can meet the general inspection needs, it is difficult to observe the top of the electrical equipment.

[0004] Based on the aforementioned issues, a search revealed that in the prior art, Chinese utility model patent with authorization announcement number CN220291439U discloses "a photovoltaic box-type transformer that facilitates later inspection," which includes a box body. The box body is composed of a bottom plate, a back plate, side plates, a first top plate, a second top plate, a first front panel, and a second front panel. The back plate is located on the rear side of the top surface of the bottom plate, and the side plates are located on the left and right sides of the bottom plate. The first top plate and the first front panel are slidably mounted on the back plate, and the second top plate is connected to the first top plate, and the second front panel is connected to the first front panel.

[0005] While existing photovoltaic transformer substations, including those mentioned above, facilitate observation of the top of electrical equipment, the movement of the first top plate and the first panel requires a large space, thus limiting their application.

[0006] To address the aforementioned issues, this utility model proposes a photovoltaic transformer substation that facilitates subsequent inspections. Utility Model Content

[0007] To address the aforementioned problems in the existing technology, this utility model provides a photovoltaic transformer box that facilitates subsequent inspections, featuring ease of use and convenient inspection.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a photovoltaic transformer substation that facilitates subsequent inspections, comprising a photovoltaic transformer substation housing, wherein the photovoltaic transformer substation housing includes:

[0009] The main frame is a composite structure welded from L-shaped steel.

[0010] Bottom sheet metal component, which is fixed to the bottom end of the main frame;

[0011] A top sheet metal component, which is hinged to the top of the main frame;

[0012] A box door sheet metal component, which is hinged to the front of the main frame;

[0013] A back sheet metal component, which is fixed to the back of the main frame;

[0014] Side sheet metal parts, the two side sheet metal parts are respectively installed on the left and right sides of the main frame;

[0015] A component mounting bracket is fixed to the top surface of the bottom sheet metal part and is used to install electrical components.

[0016] It also includes a drive mechanism, which is drivably connected to the top sheet metal part for driving the top sheet metal part to rotate.

[0017] As a preferred embodiment of this utility model, the driving mechanism includes:

[0018] Mounting block, the mounting block is fixed to the long side of the top sheet metal part, and a fixing shaft is fixed at both ends of the mounting block;

[0019] Two mounting ears with holes are symmetrically fixed to the top back of the photovoltaic transformer housing, and the fixing shaft passes through the mounting ears with holes to form a rotating structure.

[0020] A worm gear, which is fixed on the fixed shaft;

[0021] The two No. 2 mounting ears with holes are symmetrically fixed to the outer wall of the No. 1 mounting ear with holes.

[0022] A worm gear, which is rotatably mounted between the two No. 2 perforated mounting lugs and meshes with the worm wheel;

[0023] A drive motor is fixed on the second mounting lug with holes and is used to drive the worm gear to rotate.

[0024] As a preferred technical solution of this utility model, it also includes:

[0025] A rubber sealing ring is bonded and fixed to the top of the main frame.

[0026] As a preferred embodiment of this utility model, the component fixing bracket includes:

[0027] The four L-shaped columns are fixed diagonally to the top surface of the bottom sheet metal part, and multiple waist-shaped holes are machined on the L-shaped columns at equal intervals along the vertical direction.

[0028] The main component mounting plate is fixed to two L-shaped columns on the front side by bolts.

[0029] Side component mounting plates, the two side component mounting plates are respectively fixed to two L-shaped columns on the left and right sides with bolts.

[0030] As a preferred technical solution of this utility model, it also includes:

[0031] A handle, which is fixed to the outer wall of the box door sheet metal part.

[0032] As a preferred technical solution of this utility model, it also includes:

[0033] An observation window is embedded and fixed to the sheet metal part of the box door.

[0034] In a preferred embodiment of this utility model, the side sheet metal part is hinged to the main frame.

[0035] As a preferred technical solution of this utility model, it also includes:

[0036] A ventilation window is embedded and fixed to the side sheet metal part.

[0037] Compared with the prior art, the beneficial effects of this utility model are:

[0038] In this utility model, the top sheet metal part is installed in a flip-type manner. During inspection, the drive mechanism can be activated to drive the top sheet metal part to flip up, making it easy to observe the top of the electrical equipment. Moreover, it does not require a large flipping space, making it suitable for most usage scenarios and avoiding obstruction from other devices around the photovoltaic transformer housing.

[0039] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description

[0040] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0041] Figure 1 This is a schematic diagram of the structure of this utility model;

[0042] Figure 2This is a schematic diagram of the isometric structure of this utility model;

[0043] Figure 3 This utility model Figure 2 A magnified schematic diagram of the drive mechanism in the diagram;

[0044] Figure 4 This is an isometric structural diagram of the component mounting bracket in this utility model.

[0045] In the diagram: 1. Photovoltaic transformer housing; 11. Main frame; 12. Bottom sheet metal parts; 13. Top sheet metal parts; 14. Door sheet metal parts; 141. Handle; 142. Observation window; 15. Back sheet metal parts; 16. Side sheet metal parts; 161. Ventilation window; 17. Component mounting bracket; 171. L-shaped column; 1711. Waist-shaped hole; 172. Main component mounting plate; 173. Side component mounting plate; 18. Rubber sealing ring; 2. Drive mechanism; 21. Mounting block; 211. Fixed shaft; 22. Mounting ear with hole No. 1; 23. Worm gear; 24. Mounting ear with hole No. 2; 25. Worm; 26. Drive motor. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] Please see Figures 1-4 The present invention provides the following technical solution: a photovoltaic transformer box that facilitates later inspection, including a photovoltaic transformer box shell 1, the photovoltaic transformer box shell 1 including: a main frame 11, a bottom sheet metal part 12, a top sheet metal part 13, a box door sheet metal part 14, a back sheet metal part 15, a side sheet metal part 16 and a component fixing frame 17, and also includes a drive mechanism 2.

[0048] Furthermore, by Figure 1 and Figure 2As shown, in this embodiment, the main frame 11 is an assembly welded from L-shaped steel. The bottom sheet metal part 12 is fixed to the bottom end of the main frame 11, the top sheet metal part 13 is hinged to the top end of the main frame 11, the door sheet metal part 14 is hinged to the front of the main frame 11, the back sheet metal part 15 is fixed to the back of the main frame 11, the two side sheet metal parts 16 are respectively installed on the left and right sides of the main frame 11, the component mounting bracket 17 is fixed to the top surface of the bottom sheet metal part 12 for mounting electrical components, and the drive mechanism 2 is drivably connected to the top sheet metal part 13 for driving the top... With the above solution, the electrical components of the photovoltaic transformer box are fixed to the component mounting bracket 17 with screws during use. During subsequent inspections, staff can open the box door sheet metal 14 to inspect the electrical components from the front. When it is necessary to observe the top of the electrical equipment, staff can activate the drive mechanism 2 to drive the top sheet metal 13 to flip up, making it easy to observe the top of the electrical equipment. This does not require a large flipping space and is suitable for most usage scenarios, avoiding obstruction from other devices around the photovoltaic transformer box casing 1.

[0049] Optionally, by Figures 1-3 As shown, in this embodiment, the drive mechanism 2 includes: a mounting block 21, a first mounting ear with a hole 22, a worm gear 23, a second mounting ear with a hole 24, a worm 25, and a drive motor 26. The mounting block 21 is fixed to the long side of the top sheet metal part 13, and a fixed shaft 211 is fixed at both ends of the mounting block 21. The two first mounting ears with holes 22 are symmetrically fixed to the top back of the photovoltaic transformer housing 1, and the fixed shaft 211 passes through the first mounting ear with a hole 22 to form a rotating structure. The worm gear 23 is fixed on the fixed shaft 211, and the two second mounting ears with holes 24 are fixed to the top back of the photovoltaic transformer housing 1. The first hole mounting ear 24 is symmetrically fixed to the outer wall of the first hole mounting ear 22. The worm 25 is rotatably mounted between the two second hole mounting ears 24 and meshes with the worm wheel 23. The drive motor 26 is fixed on the second hole mounting ear 24 and is used to drive the worm 25 to rotate. With the above scheme, when in use, the drive motor 26 is started to drive the worm 25 to rotate. The worm 25 drives the worm wheel 23 to rotate by meshing. The worm wheel 23 drives the top sheet metal part 13 to flip by the fixed shaft 211, which can open or close the top sheet metal part 13.

[0050] It should be noted that the above solution is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The worm gear 23 and the worm 25 have reverse self-locking characteristics. Therefore, the top sheet metal part 13 will not rotate when the drive motor 26 is not started, and it has high stability. In specific use, if the stability requirement is not high, the top sheet metal part 13 can be driven to rotate directly by the drive motor 26, or the drive motor 26 can be changed to manually rotate the worm 25.

[0051] Preferably, by Figure 1 As shown, this embodiment also includes a rubber sealing ring 18, which is bonded and fixed to the top of the main frame 11. With the above solution, when the top sheet metal part 13 is closed during use, the rubber sealing ring 18 shrinks, which improves the sealing performance of the top sheet metal part 13 after it is closed, and prevents rainwater from entering the photovoltaic transformer housing 1 through the gap.

[0052] Preferably, by Figure 1 and Figure 4 As shown in this embodiment, the component mounting bracket 17 includes: L-shaped columns 171, main component mounting plate 172, and side component mounting plate 173. The four L-shaped columns 171 are diagonally fixed to the top surface of the bottom sheet metal part 12, and multiple waist-shaped holes 1711 are machined on the L-shaped columns 171 at equal intervals along the vertical direction. The main component mounting plate 172 is fixed to the two front L-shaped columns 171 with bolts, and the two side component mounting plates 173 are respectively fixed to the two L-shaped columns 171 on the left and right sides with bolts. With the above solution, electrical components can be installed on both the main component mounting plate 172 and the side component mounting plate 173 with screws during use. Both the main component mounting plate 172 and the side component mounting plate 173 are fixed to the L-shaped columns 171 with screws, and the number and height of the main component mounting plate 172 and the side component mounting plate 173 can be adjusted as needed.

[0053] Preferably, by Figure 1 As shown, this embodiment also includes a handle 141, which is fixed to the outer wall of the box door sheet metal part 14. With the above solution, the handle 141 facilitates opening the box door sheet metal part 14 during use.

[0054] Preferably, by Figure 1 As shown, this embodiment also includes an observation window 142, which is embedded and fixed on the box door sheet metal part 14. With the above solution, during use, the electrical components inside the photovoltaic transformer box shell 1 can be easily observed through the observation window 142 without opening the box door sheet metal part 14.

[0055] Preferably, by Figure 1 and Figure 2 As shown in this embodiment, the side sheet metal part 16 is hinged to the main frame 11. With the above solution, the side sheet metal part 16 can be opened to inspect the electrical components on the side during use, making the inspection more convenient.

[0056] It should be noted that the photovoltaic transformer box of this utility model further includes a door lock, which can be a commercially available conventional cabinet door lock. The specific structure and operating principle can be referred to the cabinet door lock in the prior art, which will not be elaborated in detail in this article. Secondly, cabinet door locks are installed on the sheet metal parts 14 of the box door and the sheet metal parts 16 of the side.

[0057] Preferably, by Figure 1 As shown, this embodiment also includes a ventilation window 161, which is embedded and fixed on the side sheet metal part 16. With the above solution, during use, the ventilation window 161 facilitates ventilation and heat dissipation of the electrical components inside the photovoltaic transformer housing 1.

[0058] It should be noted that the drive motor 26 is a commercially available standard device with a built-in power switch. Those skilled in the art can make conventional selections according to their needs. Its working principle is common knowledge known to those skilled in the art and has been fully disclosed in the prior art, so it will not be elaborated further in this article.

[0059] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.

[0060] Components not described in detail in this article are existing technologies.

[0061] The working principle and usage process of this utility model: When using the photovoltaic box transformer of this utility model, the electrical components of the photovoltaic box transformer are fixed to the component fixing bracket 17 with screws. During subsequent inspections, the staff can open the box door sheet metal part 14 to inspect the electrical components from the front.

[0062] When it is necessary to observe the top of the electrical equipment, the staff starts the drive motor 26 to drive the worm 25 to rotate. The worm 25 drives the worm wheel 23 to rotate through the meshing action. The worm wheel 23 drives the top sheet metal part 13 to flip up through the fixed shaft 211, which makes it easy to observe the top of the electrical equipment. It does not require a large flipping space and is suitable for most usage scenarios, avoiding obstruction from other devices around the photovoltaic transformer housing 1.

[0063] In addition, the side sheet metal part 16 is hinged, which can be opened to inspect the electrical components on the side, making the inspection more convenient.

[0064] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photovoltaic transformer substation that facilitates subsequent inspection, comprising a photovoltaic transformer substation housing (1), characterized in that, The photovoltaic transformer housing (1) includes: The main frame (11) is an assembly made of L-shaped steel welded together; Bottom sheet metal part (12), the bottom sheet metal part (12) is fixed to the bottom end of the main frame (11); Top sheet metal part (13), which is hinged to the top of the main frame (11); Box door sheet metal part (14), the box door sheet metal part (14) is hinged to the front of the main frame (11); A back sheet metal part (15) is fixed to the back of the main frame (11); Side sheet metal parts (16), the two side sheet metal parts (16) are respectively installed on the left and right sides of the main frame (11); Component mounting bracket (17) is fixed to the top surface of the bottom sheet metal part (12) and is used to install power components; It also includes a drive mechanism (2), which is drivably connected to the top sheet metal part (13) for driving the top sheet metal part (13) to flip.

2. The photovoltaic transformer substation that facilitates subsequent inspection according to claim 1, characterized in that: The drive mechanism (2) includes: Mounting block (21), which is fixed to the long side of the top sheet metal part (13), and a fixing shaft (211) is fixed at both ends of the mounting block (21); Two mounting ears with holes (22) are symmetrically fixed to the top of the back of the photovoltaic transformer housing (1), and the fixing shaft (211) passes through the mounting ears with holes (22) to form a rotating structure. Worm gear (23), the worm gear (23) is fixed on the fixed shaft (211); The two No. 2 mounting ears (24) are symmetrically fixed to the outer wall of the No. 1 mounting ear (22); The worm (25) is rotatably mounted between the two No. 2 perforated mounting lugs (24) and meshes with the worm wheel (23); A drive motor (26) is fixed on the second mounting lug (24) with holes and is used to drive the worm gear (25) to rotate.

3. The photovoltaic transformer substation that facilitates subsequent inspection according to claim 1, characterized in that: Also includes: A rubber sealing ring (18) is bonded and fixed to the top of the main frame (11).

4. A photovoltaic transformer substation that facilitates subsequent inspections according to claim 1, characterized in that: The component mounting bracket (17) includes: L-shaped columns (171), four L-shaped columns (171) are fixed diagonally to the top surface of the bottom sheet metal part (12), and multiple waist-shaped holes (1711) are machined on the L-shaped columns (171) at equal intervals along the vertical direction. The main component mounting plate (172) is fixed to the two L-shaped columns (171) on the front side by bolts; Side component mounting plate (173), the two side component mounting plates (173) are respectively fixed to two L-shaped columns (171) on the left and right sides by bolts.

5. A photovoltaic transformer substation that facilitates subsequent inspections according to claim 1, characterized in that: Also includes: A handle (141) is fixed to the outer wall of the box door sheet metal part (14).

6. A photovoltaic transformer substation that facilitates subsequent inspections according to claim 1, characterized in that: Also includes: An observation window (142) is embedded and fixed on the sheet metal part (14) of the box door.

7. A photovoltaic transformer substation that facilitates subsequent inspections according to claim 1, characterized in that: The side sheet metal part (16) is hinged to the main frame (11).

8. A photovoltaic transformer substation that facilitates subsequent inspections according to claim 1, characterized in that: Also includes: A ventilation window (161) is embedded and fixed on the side sheet metal part (16).

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