Outdoor photovoltaic grid-connected cabinet

Abstract

The utility model discloses an outdoor photovoltaic grid-connected cabinet, which comprises an outdoor box and a plurality of grid-connected cabinet bodies, the outdoor box is sleeved outside the grid-connected cabinet bodies, the upper end of the outdoor box is provided with a top cover, the top end of the inside of the top cover is provided with a fixed support and a top beam, the surface of the top beam is provided with an axial flow fan, the front end of each grid-connected cabinet body is provided with an instrument door, and the instrument doors are connected with the instrument doors. A temperature controller is installed on the instrument door, a sensor of the temperature controller is installed on the top of the grid-connected cabinet body, and the temperature controller is used for receiving temperature information of the sensor of the temperature controller and controlling the axial flow fan to work. According to the utility model, the defect that the existing grid-connected cabinet is easily influenced by outdoor temperature, so that the temperature of equipment is too high and the safety operation of the equipment is not facilitated is overcome.

Description

Technical Field

[0001] This utility model relates to the field of power distribution equipment, specifically to an outdoor photovoltaic grid-connected cabinet. Background Technology

[0002] In recent years, with the continuous growth of global demand for renewable energy, the scale of photovoltaic power generation has continued to expand. As the connection equipment between inverters and the power grid, the demand for low-voltage photovoltaic grid-connected cabinets is also increasing. However, since most photovoltaic projects at present are installed on the roofs of existing factory buildings, the original power distribution equipment needs to be modified. In this case, the original site is often limited, and the low-voltage grid-connected cabinets often need to be built outdoors.

[0003] Commonly used stainless steel grid-connected cabinets are relatively expensive. These cabinets are also susceptible to outdoor temperature fluctuations, which can lead to overheating and compromise the safe operation of the equipment. Summary of the Invention

[0004] This invention addresses the aforementioned problems by proposing an outdoor photovoltaic grid-connected cabinet, which solves the defect that existing grid-connected cabinets are easily affected by outdoor temperatures, leading to excessively high equipment temperatures that are detrimental to the safe operation of the equipment.

[0005] The technical solution adopted by this utility model is as follows:

[0006] An outdoor photovoltaic grid-connected cabinet includes: an outdoor box and several grid-connected cabinets. The outdoor box is fitted over the several grid-connected cabinets. The outdoor box has a top cover at its upper end. The top cover has a fixed bracket and a top beam at its upper end. An axial flow fan is mounted on the surface of the top beam. An instrument door is provided at the front end of each grid-connected cabinet. A temperature controller is installed on the instrument door. The temperature controller's sensor is installed on the top of the grid-connected cabinet. The temperature controller is used to receive temperature information from the sensor and control the axial flow fan to operate.

[0007] Optionally, a pair of doors are hinged to both sides of the grid-connected cabinet.

[0008] Optionally, the outdoor box is also equipped with front and rear door panels, and the left and right side panels have first ventilation holes.

[0009] Optionally, the top cover is provided with a rain cover, and the top cover is inlaid with tile covers on both sides; there are gaps between the rain cover and the tile covers.

[0010] Optionally, the top cover is provided with a second ventilation hole around its perimeter.

[0011] Optionally, anti-corrosion wooden strips are provided on both sides of the outdoor box top cover.

[0012] Optionally, the top cover is provided with lifting lugs on both sides.

[0013] Optionally, the bottom plate of the outdoor box is provided with cable holes.

[0014] Optionally, the outdoor box is equipped with a limit switch and a light.

[0015] Optionally, the bottom of the outdoor box is made of non-slip aluminum plate.

[0016] Beneficial effects

[0017] 1. This utility model adopts a combined form, integrating the outer casing with the main body of the internal photovoltaic grid-connected cabinet. The size of the outer casing can be adjusted according to the size or number of the main body of the grid-connected cabinet. When multiple outdoor grid-connected cabinets are installed on site, the layout is more concentrated and the footprint is smaller. The top cover is equipped with a temperature control sensor and an axial flow fan, which can automatically start and stop the fan according to the outdoor temperature, solving the problem that the internal temperature of the outdoor grid-connected cabinet is easily affected by the environment.

[0018] 2. The outer casing of this utility model is made of aluminum-zinc coated plate and anticorrosive wood structure, which is inexpensive and has the characteristics of corrosion resistance and wear resistance.

[0019] 3. This utility model features high strength and lightweight design. The outer casing is made of a combination of aluminum-zinc coated steel sheet and anticorrosive wood. The aluminum-zinc coated steel sheet is lighter than stainless steel, but has better corrosion resistance and higher strength than ordinary steel sheet. The anticorrosive wood is treated with CCA or ACQ for corrosion protection, making it resistant to insects and moisture, and has a low density, thus reducing the overall weight.

[0020] 4. In this utility model, the preservative-treated wood further blocks external moisture erosion. It has high thermal insulation performance; wood has a low thermal conductivity, which reduces the internal temperature rise of the transformer substation compared to a stainless steel shell. The preservative-treated wood can also serve a decorative purpose, blending into the natural environment (such as scenic spots or residential areas), while the aluminum-zinc coated sheet provides industrial-grade protection, balancing functionality and aesthetics.

[0021] 5. Limit switches and lighting lamps are installed at corresponding positions on the inner sides of the front and rear door panels of the outdoor box frame of this utility model to facilitate maintenance lighting and solve the problem of insufficient light in special outdoor environments during maintenance. Attached image description:

[0022] Figure 1 This is a three-dimensional structural diagram of the outdoor photovoltaic grid-connected cabinet according to Embodiment 1 of this utility model;

[0023] Figure 2 This is a diagram showing the door opening structure of the outdoor photovoltaic grid-connected cabinet according to Embodiment 1 of this utility model;

[0024] Figure 3 This is an internal structural diagram of the outdoor photovoltaic grid-connected cabinet of Embodiment 1 of this utility model.

[0025] The labels for the attached figures are as follows:

[0026] 1. Outdoor box, 2. Grid-connected cabinet, 3. Top cover, 4. Fixed bracket, 5. Top beam, 6. Axial flow fan, 7. Instrument door, 8. Door panel, 9. Cable hole, 10. Rain cover, 11. Roofing cover, 12. Second ventilation hole, 13. Lifting lug, 14. Dust filter, 15. Anticorrosive wood strip, 16. First ventilation hole. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0029] Example 1

[0030] The technical solution adopted by this utility model is as follows:

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model discloses an outdoor photovoltaic grid-connected cabinet, including: an outdoor box 1 and a grid-connected cabinet body 2. The outdoor box is outer-mounted outside the grid-connected cabinet body. The outdoor box has an inclined top cover 3 at its upper end to prevent water accumulation. A fixed bracket 4 and a top beam 5 are provided at the top of the inside of the top cover. An axial flow fan 6 is mounted on the surface of the top beam. An instrument door 7 is provided at the front of the grid-connected cabinet body. A temperature controller is mounted on the instrument door, and the sensor of the temperature controller is installed on the top of the grid-connected cabinet body. The temperature controller receives temperature information from the sensor and controls the operation of the axial flow fan. The outer box is made of aluminum-zinc coated sheet.

[0032] In practice, there can be one or multiple grid-connected cabinets. The size of the outdoor distribution box is adjusted according to the size and number of the internal grid-connected cabinets.

[0033] The grid-connected cabinet has a pair of doors hinged to both sides. The outdoor unit is also equipped with front and rear door panels 8, and the left and right side panels have first ventilation holes 16. The top cover is equipped with a rain cover 10, and the top cover is inlaid with tile covers 11 on both sides, with a gap between the rain cover and the tile covers.

[0034] The top cover is provided with a second ventilation hole 12 around its perimeter. Anti-corrosion wooden strips 15 are provided on both sides of the outdoor box top cover to distribute the force of the lifting slings on the top cover when the box is lifted, thus preventing the top cover from deforming.

[0035] The top cover is equipped with lifting lugs 13 on both sides to facilitate lifting the top cover and hoisting the main body of the grid-connected cabinet into the enclosure. The lower front door and upper and lower rear doors of the grid-connected cabinet are equipped with grille ventilation holes to facilitate ventilation. The air inlet on the grid-connected cabinet is fitted with a dust filter 14, and the air outlet is equipped with louvers.

[0036] The outdoor enclosure is equipped with limit switches and a light on the inside for convenient maintenance and to solve the problem of insufficient lighting in special outdoor environments during maintenance. The bottom of the outdoor enclosure is made of non-slip aluminum plate. The door panel is equipped with a lock box, which has a waterproof structure.

[0037] The outdoor box has cable holes 9 on its bottom plate and is equipped with cable rubber rings. Inside the grid-connected cabinet, cable clamp beams and cable clamps are installed for cable fixation. The bottom of the outdoor box has a door limit mechanism to fix the door position when it is opened. The bottom frame of the outdoor box is made of 10# channel steel and has four retractable lifting mechanisms on the front and rear sides, coated with anti-rust paint.

[0038] In this embodiment, a temperature sensor monitors the top temperature, and a temperature controller controls the start and stop of the top fan of the photovoltaic grid-connected cabinet. When the temperature inside the cabinet is too high, the fan is activated to circulate air and lower the temperature. The anti-corrosion wooden strips can distribute the force of the slings on the top cover when the entire cabinet is lifted, preventing the top cover from deforming.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the scope of patent protection of the present utility model. Any equivalent structural transformations made based on the content of the present utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly included within the scope of protection of the present utility model.

Claims

1. An outdoor photovoltaic grid-connected cabinet, characterized in that, The utility model relates to an outdoor box and a plurality of grid-connected cabinet bodies, the outdoor box is sleeved outside the plurality of grid-connected cabinet bodies, the upper end of the outdoor box is equipped with a top cover, the inner top end of the top cover is equipped with a fixed support and a roof beam, the surface of the roof beam is equipped with an axial flow fan, the front end of the grid-connected cabinet body is equipped with an instrument door, the temperature controller is installed on the top of the grid-connected cabinet body, the temperature controller is used for receiving the temperature information of the sensor of the temperature controller and controlling the work of the axial flow fan. Both sides of the grid-connected cabinet body are hinged with a pair of doors.

2. An outdoor photovoltaic grid-connected cabinet according to claim 1, characterized in that, The outdoor box is also provided with door plates at the front and back, and first ventilation holes are formed in the left and right side plates.

3. The outdoor photovoltaic grid-connected cabinet according to claim 1, characterized in that, A rain cover is arranged on the upper end of the top cover, and tile covers are inlaid on both sides of the upper end of the top cover.

4. The outdoor photovoltaic grid-connected cabinet according to claim 1 or 2 or 3, characterized in that, Second ventilation holes are arranged around the top cover.

5. An outdoor photovoltaic grid-connected cabinet according to claim 4, characterized in that, Anti-corrosion wooden strips are arranged on both sides of the top cover of the outdoor box.

6. The outdoor photovoltaic grid-connected cabinet according to claim 1 or 2 or 3, characterized in that, Lifting lugs are arranged on both sides of the top cover.

7. The outdoor photovoltaic grid-connected cabinet according to claim 1 or 2 or 3, characterized in that, A cable hole is formed in the bottom plate of the outdoor box.

8. The outdoor photovoltaic grid-connected cabinet according to claim 1 or 2 or 3, characterized in that, A travel switch and a light are arranged inside the outdoor box.

9. The outdoor photovoltaic grid-connected cabinet according to claim 1 or 2 or 3, characterized in that, Anti-slip aluminum plates are arranged at the bottom of the outdoor box.

10. The outdoor photovoltaic grid-connected cabinet according to claim 1 or 2 or 3, characterized in that, ​

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