CN215733016U

CN215733016U - Distributed photovoltaic power generation grid-connected box

Info

Publication number: CN215733016U
Application number: CN202121307289.3U
Authority: CN
Inventors: 赵光景
Original assignee: Jiangxi Guangchuang Power Engineering Service Co ltd
Current assignee: Jiangxi Guangchuang Power Engineering Service Co ltd
Priority date: 2021-06-11
Filing date: 2021-06-11
Publication date: 2022-02-01
Anticipated expiration: 2031-06-11

Abstract

The utility model relates to the technical field of grid-connected boxes, in particular to a distributed photovoltaic power generation grid-connected box, which comprises a grid-connected box main body, wherein electrical components are arranged in the grid-connected box main body, a box door is installed on the front surface of the grid-connected box main body through a hinge, a base is arranged at the lower end of the grid-connected box main body, a containing cavity is arranged on the base, a bottom plate is arranged at the lower end of the inner cavity of the grid-connected box main body, a plurality of first heat dissipation holes are arranged on the bottom plate, so that the inner cavity of the grid-connected box main body is communicated with the containing cavity, a plurality of second heat dissipation holes communicated with the outside are arranged on the lower end surface of the containing cavity, a plurality of exhaust fans corresponding to the first heat dissipation holes are arranged on the lower end surface of the bottom plate, the exhaust fans blow air downwards and correspond to the second heat dissipation holes, an annular drying layer is arranged on the inner edge of the second heat dissipation holes, and a plurality of vent holes are arranged on the upper end of the side wall of the grid-connected box main body, and the upper end of the side wall of the grid-connected box main body is provided with a side plate for shielding the vent hole.

Description

Distributed photovoltaic power generation grid-connected box

Technical Field

The utility model relates to the technical field of grid-connected boxes, in particular to a distributed photovoltaic power generation grid-connected box.

Background

The distributed photovoltaic power generation system adopts photovoltaic components to directly convert solar energy into electric energy, the capacity of the personal or household distributed photovoltaic power generation is generally within several kilowatts, no noise exists in the power generation process, air and water cannot be polluted, the environmental protection benefit is outstanding, a considerable part of generated electricity is consumed by users, and the distributed photovoltaic power generation system has a series of advantages of being close to the users, low in power transmission cost, small in influence on a power grid, flexible in site selection, wide in application range and the like, is one of the currently mainly popularized photovoltaic power generation modes, and needs to use the distributed photovoltaic power generation and a net cage to converge currents generated by the photovoltaic components in the distributed power generation system so as to access the collected currents into the power grid.

The existing distributed photovoltaic power generation and net cage is generally hung outdoors, and is in sunshine, wind and rain environments for a long time, so that the anti-aging and waterproof effects are significant to the service life and safety of electrical equipment in the box, and meanwhile, electronic components working for a long time generate large heat, if the heat cannot be dissipated in time, the performance of the electronic components and the like can be affected, and even accidents such as fire disasters occur.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a distributed photovoltaic power generation combined net cage.

The utility model adopts the following technical scheme: a distributed photovoltaic power generation combining net cage comprises a grid-connected box main body, wherein an electrical element is arranged in the grid-connected box main body, the front surface of the grid-connected box main body is provided with a box door through a hinge, the lower end of the grid-connected box main body is provided with a base, the base is provided with a containing cavity, the lower end of the inner cavity of the grid-connected box main body is provided with a bottom plate, the bottom plate is provided with a plurality of first heat dissipation holes, thereby leading the inner cavity of the main body of the grid-connected box to be communicated with the containing cavity, the lower end surface of the containing cavity is provided with a plurality of second heat dissipation holes communicated with the outside, the lower end surface of the bottom plate is provided with a plurality of exhaust fans corresponding to the first heat dissipation holes, the exhaust fans blow air downwards and correspond to the second heat dissipation holes, an annular drying layer is arranged on the inner edge of the second heat dissipation hole, a plurality of vent holes are formed in the upper end of the side wall of the grid-connected box main body, and a side plate used for shielding the vent holes is arranged at the upper end of the side wall of the grid-connected box main body;

the side wall of the inner cavity of the main body of the grid-connected box is provided with a temperature sensor and a controller, the temperature sensor is electrically connected with the controller, the controller is electrically connected with the exhaust fan, and the controller is used for controlling the on or off of the exhaust fan according to data monitored by the temperature sensor;

the lateral wall of the inner cavity of the grid-connected box body is provided with a humidity sensor, the humidity sensor is electrically connected with a controller, and the controller is used for controlling the opening or closing of the exhaust fan according to data monitored by the humidity sensor.

Preferably, a first dustproof net is embedded in the first radiating hole, a second dustproof net is arranged in the second radiating hole, and the second dustproof net is located in an inner ring of the drying layer.

Preferably, the curb plate is equipped with the ventilation chamber, the ventilation chamber is equipped with the opening towards case main part one side of being incorporated into the power networks, the ventilation chamber lower extreme is equipped with the opening, ventilation hole and ventilation chamber intercommunication, the lower extreme of curb plate be equipped with the third dust prevention net of ventilation chamber lower extreme open-ended adaptation.

Preferably, an end cover is arranged at the upper end of the grid-connected box main body, the upper end face of the end cover is of an arc-shaped structure, two sides of the end cover are connected with the upper end faces of the side plates, and the upper end faces of the side plates are matched with the inclination angle of the upper end face of the end cover.

Preferably, an inner frame is arranged on the inner edge of the door frame of the grid-connected box main body, and a sealing strip matched with the box door is arranged on the inner frame.

Preferably, the side wall of the upper end of the accommodating cavity is provided with a baffle ring, and the side end of the bottom plate is abutted to the upper end face of the baffle ring.

The utility model has at least one of the following beneficial effects:

according to the utility model, when the temperature of the inner cavity of the main body of the grid-connected box is too high, the temperature sensor monitors data and transmits the data to the controller, the controller controls the exhaust fan to start, the exhaust fan blows air towards the second heat dissipation hole to discharge the heat of the inner cavity of the main body of the grid-connected box, and the exhaust fan stops working until the temperature of the inner cavity of the main body of the grid-connected box is reduced to a safety threshold value; when the air humidity in the inner cavity of the main body of the grid-connected box is too high, the humidity sensor transmits the monitored data to the controller, the controller controls the exhaust fan to be started, water vapor in the inner cavity of the main body of the grid-connected box is discharged until the humidity in the inner cavity of the main body of the grid-connected box is reduced to a safety threshold value, and the exhaust fan stops working; the drying layer is used for absorbing water vapor, so that the water vapor content in the air entering the inner cavity of the main body of the grid-connected box is effectively reduced, and the drying agent in the drying layer can be synchronously dried by the exhaust fan when the inner cavity of the main body of the grid-connected box is dehumidified, so that the efficacy of the drying agent is recovered; the vent hole, the first heat dissipation hole and the second heat dissipation hole form an upper air channel and a lower air channel, so that the air blowing and heat dissipation efficiency of the exhaust fan is higher; the exhaust fan is located and holds the intracavity, and the setting of base is effectual to be protected first louvre, reduces the debris dust and falls into the box main part inner chamber that is incorporated into the power networks.

Drawings

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the overhead structure of the preferred embodiment of the present invention;

FIG. 3 is a schematic structural diagram of an inner frame in a preferred embodiment of the present invention;

FIG. 4 is a schematic view of the internal structure of the base in the preferred embodiment of the present invention;

FIG. 5 is a schematic view of the structure of the bottom plate of the preferred embodiment of the present invention on the top;

FIG. 6 is a schematic view showing the structure of a vent hole in the preferred embodiment of the present invention;

fig. 7 is a side view schematically illustrating the structure of the side panel according to the preferred embodiment of the present invention.

Description of reference numerals:

10 are incorporated into the power box main part, 11 chamber door, 111 inner frame, 112 sealing strip, 12 bases, 121 hold chamber, 122 bottom plate, 123 first louvre, 1231 first dust screen, 124 second louvre, 1241 dry layer, 1242 second dust screen, 125 exhaust fan, 126 fender ring, 13 temperature sensor, 14 humidity transducer, 15 controller, 16 curb plates, 161 ventilation chamber, 162 third dust screen, 17 end cover, 18 ventilation hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center, longitudinal, transverse, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise" and the like refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the present invention and simplifying the description, and do not refer to or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

Referring to fig. 1 to 7, in a preferred embodiment of the present invention, a distributed photovoltaic power generation and net cage includes a grid-connected box main body 10, electrical components are disposed in the grid-connected box main body 10, a box door 11 is mounted on a front surface of the grid-connected box main body 10 through a hinge, a base 12 is disposed at a lower end of the grid-connected box main body 10, the base 12 has a receiving cavity 121, a bottom plate 122 is disposed at a lower end of an inner cavity of the grid-connected box main body 10, a plurality of first heat dissipation holes 123 are disposed on the bottom plate 122, so that the inner cavity of the grid-connected box main body 10 is communicated with the receiving cavity 121, a plurality of second heat dissipation holes 124 communicated with the outside are disposed at a lower end of the receiving cavity 121, a plurality of exhaust fans 125 corresponding to the first heat dissipation holes 123 are disposed at a lower end of the bottom plate 122, the exhaust fans 125 blow downward and correspond to the second heat dissipation holes 124, an annular drying layer 1241 is disposed at an inner edge of the second heat dissipation holes 124, a plurality of ventilation holes 18 are disposed at an upper end of a sidewall of the grid-connected box main body 10, a side plate 16 for shielding the vent hole 18 is arranged at the upper end of the side wall of the grid-connected box main body 10;

the side wall of the inner cavity of the grid-connected box main body 10 is provided with a temperature sensor 13 and a controller 15, the temperature sensor 13 is electrically connected with the controller 15, the controller 15 is electrically connected with the exhaust fan 125, and the controller 15 is used for controlling the on or off of the exhaust fan 125 according to data monitored by the temperature sensor 13;

the side wall of the inner cavity of the grid-connected box main body 10 is provided with a humidity sensor 14, the humidity sensor 14 is electrically connected with a controller 15, and the controller 15 is used for controlling the opening or closing of the exhaust fan 125 according to data monitored by the humidity sensor 14.

In the utility model, when the temperature of the inner cavity of the grid-connected box main body 10 is too high, the temperature sensor 13 monitors the data and transmits the data to the controller 15, the controller 15 controls the exhaust fan 125 to start, the exhaust fan 125 blows air towards the second heat dissipation hole 124 to discharge the heat of the inner cavity of the grid-connected box main body 10 until the temperature of the inner cavity of the grid-connected box main body 10 is reduced to a safety threshold, and the exhaust fan 125 stops working; when the humidity of the air in the inner cavity of the grid-connected box main body 10 is too high, the humidity sensor 14 transmits the monitored data to the controller 15, the controller 15 controls the exhaust fan 125 to be started, the water vapor in the inner cavity of the grid-connected box main body 10 is exhausted until the humidity of the inner cavity of the grid-connected box main body 10 is reduced to a safety threshold, and the exhaust fan 125 stops working; the drying layer 1241 is used for absorbing water vapor, so that the water vapor content in the air entering the inner cavity of the grid-connected box main body 10 is effectively reduced, and the drying agent in the drying layer 1241 can be synchronously dried by the exhaust fan 125 when the inner cavity of the grid-connected box main body 10 is dehumidified, so that the effect of the drying agent is recovered; the vent 18, the first heat dissipation hole 123 and the second heat dissipation hole 124 form an upper and lower air passage, so that the efficiency of blowing and heat dissipation of the exhaust fan 125 is higher; the exhaust fan 125 is positioned in the accommodating cavity 121, and the base 12 is arranged to effectively protect the first heat dissipation hole 123, so that sundries and dust are reduced from falling into the inner cavity of the grid-connected box main body 10; the utility model can effectively control the temperature and the air humidity inside the grid-connected box main body 10, so that the grid-connected box is safer to use and longer in service life, and the controller 15 is adopted to control the energy-saving and environment-friendly effects.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

a first dust screen 1231 is embedded in the first heat dissipation hole 123, a second dust screen 1242 is arranged in the second heat dissipation hole 124, the second dust screen 1242 is located in the inner ring of the drying layer 1241, and the dust-proof effect of the lower end of the grid-connected box main body 10 is effectively improved by arranging the first dust screen 1231 and the second dust screen 1242; in this embodiment, two first heat dissipation holes 123 and two second heat dissipation holes 124 are provided, and two corresponding exhaust fans 125 are provided.

The side plate 16 is provided with a ventilation cavity 161, one side of the ventilation cavity 161, which faces the grid-connected box main body 10, is provided with an opening, the lower end of the ventilation cavity 161 is provided with an opening, the vent hole 18 is communicated with the ventilation cavity 161, the lower end of the side plate 16 is provided with a third dust prevention net 162 which is matched with the opening at the lower end of the ventilation cavity 161, the side plate 16 effectively shields the vent hole 18 without influencing the ventilation effect of the vent hole 18, and the dust prevention effect of the vent hole 18 is improved by the third dust prevention net 162; in the present embodiment, the vent holes 18 are provided at the upper ends of the left and right side walls of the grid-connected box main body 10, and five vent holes are provided on each side.

An end cover 17 is arranged at the upper end of the grid-connected box main body 10, the upper end face of the end cover 17 is of an arc-shaped structure, two sides of the end cover 17 are connected with the upper end faces of the side plates 16, the upper end faces of the side plates 16 are matched with the upper end face of the end cover 17 in inclination angle, the end cover 17 of the arc-shaped structure is good in drainage effect and not prone to dust accumulation, and the end cover 17 is matched with the side plates 16 to enable the upper end of the grid-connected box main body 10 not to accumulate water; in this embodiment, the cross section of the side plate 16 is a hollow trapezoidal structure.

An inner frame 111 is arranged on the inner edge of the door frame of the grid-connected box main body 10, a sealing strip 112 matched with the box door 11 is arranged on the inner frame 111, and the sealing property of the box door 11 is improved by the arrangement of the sealing strip 112, so that the dustproof and waterproof effect of the utility model is better; in this embodiment, the box door 11 is further provided with a transparent observation window, so that the working state of the devices inside the grid-connected box main body 10 can be conveniently checked.

A baffle ring 126 is arranged on the side wall of the upper end of the accommodating cavity 121, the side end of the bottom plate 122 is abutted against the upper end face of the baffle ring 126, the bottom plate 122 is directly placed on the baffle ring 126, and the bottom plate 122 is detachable, so that the exhaust fan 125 is convenient to install and overhaul; in this embodiment, the retaining ring 126 is configured to fit into the receiving cavity 121.

In the present invention, the controller 15 is a 51-chip microcomputer, the structure and principle of which are well known to those skilled in the art, and therefore, will not be described in detail herein; the structure and the principle of the temperature sensor 13 and the humidity sensor 14 are well known to those skilled in the art, and therefore, will not be described in detail herein.

The above additional technical features can be freely combined and used in superposition by those skilled in the art without conflict.

The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.

Claims

1. A distributed photovoltaic power generation combined net cage comprises a grid-connected box main body (10), wherein electrical components are arranged in the grid-connected box main body (10), and the distributed photovoltaic power generation combined net cage is characterized in that a box door (11) is installed on the front side of the grid-connected box main body (10) through a hinge, a base (12) is arranged at the lower end of the grid-connected box main body (10), a containing cavity (121) is arranged on the base (12), a bottom plate (122) is arranged at the lower end of an inner cavity of the grid-connected box main body (10), a plurality of first heat dissipation holes (123) are formed in the bottom plate (122), so that the inner cavity of the grid-connected box main body (10) is communicated with the containing cavity (121), a plurality of second heat dissipation holes (124) communicated with the outside are formed in the lower end face of the containing cavity (121), a plurality of exhaust fans (125) corresponding to the first heat dissipation holes (123) are arranged on the lower end face of the bottom plate (122), and the exhaust fans (125) blow downwards and correspond to the second heat dissipation holes (124), an annular drying layer (1241) is arranged on the inner edge of the second heat dissipation hole (124), a plurality of vent holes (18) are formed in the upper end of the side wall of the grid-connected box main body (10), and a side plate (16) used for shielding the vent holes (18) is arranged at the upper end of the side wall of the grid-connected box main body (10);

the side wall of the inner cavity of the grid-connected box main body (10) is provided with a temperature sensor (13) and a controller (15), the temperature sensor (13) is electrically connected with the controller (15), the controller (15) is electrically connected with the exhaust fan (125), and the controller (15) is used for controlling the exhaust fan (125) to be turned on or off according to data monitored by the temperature sensor (13);

the lateral wall of being incorporated into the power networks case main part (10) inner chamber is equipped with humidity transducer (14), humidity transducer (14) and controller (15) electric connection, controller (15) are used for controlling opening or closing of exhaust fan (125) according to the data of humidity transducer (14) monitoring.

2. The distributed photovoltaic power generation merging box according to claim 1, wherein a first dust screen (1231) is embedded in the first heat dissipation hole (123), a second dust screen (1242) is arranged in the second heat dissipation hole (124), and the second dust screen (1242) is located in an inner ring of the drying layer (1241).

3. A distributed photovoltaic power generation combined box net according to claim 1, characterized in that the side plate (16) is provided with a ventilation cavity (161), an opening is formed in one side of the ventilation cavity (161) facing the grid-connected box main body (10), an opening is formed in the lower end of the ventilation cavity (161), the ventilation hole (18) is communicated with the ventilation cavity (161), and a third dust prevention net (162) matched with the opening in the lower end of the ventilation cavity (161) is arranged at the lower end of the side plate (16).

4. The distributed photovoltaic power generation parallel net cage according to claim 1, wherein an end cover (17) is arranged at the upper end of the grid-connected box main body (10), the upper end face of the end cover (17) is of an arc-shaped structure, two sides of the end cover (17) are connected with the upper end face of a side plate (16), and the upper end face of the side plate (16) is matched with the inclination angle of the upper end face of the end cover (17).

5. The distributed photovoltaic power generation combined net cage according to claim 1, wherein an inner frame (111) is arranged on the inner edge of a door frame of the grid-connected box main body (10), and a sealing strip (112) matched with the box door (11) is arranged on the inner frame (111).

6. The distributed photovoltaic power generation combined net cage according to claim 1, wherein the side wall of the upper end of the accommodating cavity (121) is provided with a baffle ring (126), and the side end of the bottom plate (122) is abutted with the upper end face of the baffle ring (126).