CN220139035U - Grid-connected box - Google Patents

Abstract

The utility model provides a grid-connected box. The grid-connected box comprises: the top of the box body is provided with an opening and a mounting cavity communicated with the opening; the fixed mounting structure is positioned at the bottom of the mounting cavity, is arranged towards the opening and is parallel to the bottom wall of the box body; and an auxiliary mounting structure disposed in the mounting cavity and dividing the mounting cavity into a first mounting cavity located at a lower side and a second mounting cavity located at an upper side. The grid-connected box of the technical scheme can solve the problems that when the same number of devices are installed, the existing grid-connected box needs larger installation space, and the size of the grid-connected box is too large, so that transportation and carrying are difficult.

Description

Grid-connected box

Technical Field

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

Background

The photovoltaic power generation grid connection is that direct current generated by a solar component is converted into alternating current meeting the requirement of a commercial power grid through a grid-connected inverter and then is directly connected into a public power grid, and the photovoltaic power generation grid connection can be divided into grid-connected power generation systems with storage batteries and grid-connected power generation systems without storage batteries. The photovoltaic grid-connected box is used as a general outlet of the photovoltaic power station and is a power distribution device for connecting the photovoltaic power station and a power grid, and the photovoltaic grid-connected box is mainly used as a demarcation point of the photovoltaic power generation system and the power grid, and can be additionally provided with functional devices such as metering, protection and the like for the photovoltaic power station with low-voltage grid connection. With the popularization of distributed photovoltaic and household photovoltaic, the capacity of the photovoltaic total installation is rapidly increased, and the grid-connected box is widely applied as a carrier for connecting the photovoltaic with a power grid.

The Chinese patent literature discloses a complete switchgear of intelligent photovoltaic grid-connected box, and the grant bulletin number is CN209150556U, and this patent separates metering equipment and the switchgear that photovoltaic grid-connected power generation was used in the different regions of casing rationally, can not take place the space conflict, and can be to switching equipment and metering equipment isolated fixed, further prevents that switching equipment and metering equipment from taking place the phenomenon of collision, reduces the phenomenon of cross mutual inductance between switching equipment and the metering equipment. However, all the devices in the patent are arranged on the upper part and the lower part of the box body along the vertical direction, and all the devices are positioned on one side of the box body far away from the cabinet door, when the number of the devices to be installed is large, a larger installation space is needed, according to the arrangement mode, the height or the length of the box body needs to be increased, and the grid-connected box is overlarge in size, so that the transportation and the carrying are difficult.

Disclosure of Invention

The utility model mainly aims to provide a grid-connected box, which can solve the problems that the existing grid-connected box needs larger installation space and is difficult to transport due to overlarge size when the same number of devices are installed.

To achieve the above object, according to an aspect of the present utility model, there is provided a grid-connected box comprising: the top of the box body is provided with an opening and a mounting cavity communicated with the opening; the fixed mounting structure is positioned at the bottom of the mounting cavity, is arranged towards the opening and is parallel to the bottom wall of the box body; and an auxiliary mounting structure disposed in the mounting cavity and dividing the mounting cavity into a first mounting cavity located at a lower side and a second mounting cavity located at an upper side.

Further, the auxiliary mounting structure comprises a mounting plate, the mounting plate is rotatably arranged on one side wall of the box body, the mounting plate is provided with a mounting position parallel to the fixed mounting structure, and the mounting plate is further provided with an avoiding position which is at a preset angle with the fixed mounting structure.

Further, the auxiliary mounting structure further comprises a first rotating connection structure, and the mounting plate is rotatably arranged on one side wall of the box body through the first rotating connection structure.

Further, the auxiliary mounting structure further comprises a first locking structure, the first locking structure and the first rotating connection structure are located on opposite sides of the mounting plate, and a fixing structure capable of being matched with the first locking structure is arranged on the box body.

Further, the first locking structure comprises a locking piece, the locking piece is rotatably arranged on the mounting plate, the fixing structure comprises a first groove, and the locking piece is in a locking state matched with the first groove and an unlocking state separated from the first groove.

Further, a communication structure is provided on the mounting plate, and when the mounting plate is in the mounting position, the communication structure has an open state in which it communicates with the first mounting chamber and a closed state in which it does not communicate with the first mounting chamber.

Further, the communication structure comprises a through hole, a partition plate and a second rotation connecting structure, and the partition plate is arranged at the through hole through the rotation cover of the second rotation connecting structure.

Further, the communication structure further comprises a second locking structure, wherein the second locking structure is arranged on the opposite side of the second rotary connecting structure and can lock and fix one end, far away from the second rotary connecting structure, of the partition plate on the mounting plate.

Further, the mounting plate is provided with a threading hole for the lead to pass in and out.

Further, the value range of the preset angle is 0-90 degrees.

By applying the technical scheme of the utility model, the fixed mounting structure and the auxiliary mounting structure are arranged, the fixed mounting structure is arranged at the bottom of the mounting cavity, and the auxiliary mounting structure is arranged above the fixed mounting structure and divides the mounting cavity into a first mounting cavity and a second mounting cavity. The auxiliary mounting structure divides the box body into an upper layer and a lower layer, the mounting surfaces of the fixed mounting structure and the auxiliary mounting structure are all arranged towards the opening, one part of electronic components are mounted on the fixed mounting structure and located in the first mounting cavity, and the other part of electronic components are mounted on the auxiliary mounting structure and located in the second mounting cavity. Because the box is bilayer structure, each electronic components arranges on fixed mounting structure and auxiliary mounting structure's mounting plane along the horizontal direction, consequently, can reduce the high size of box, make the whole size of box conveniently transport and carry.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic diagram of the internal structure of a grid tie box according to an embodiment of the present utility model;

FIG. 2 shows a schematic layout of electronic components mounted on an auxiliary mounting structure according to one embodiment of the present utility model;

FIG. 3 is a schematic diagram showing the arrangement of electronic components mounted on an auxiliary mounting structure according to an embodiment of the present utility model;

FIG. 4 shows a schematic layout of electronic components mounted on a fixed mounting structure in accordance with one embodiment of the present utility model;

FIG. 5 shows a schematic layout of electronic components mounted on a fixed mounting structure in accordance with one embodiment of the present utility model;

FIG. 6 shows a schematic layout of electronic components mounted on an auxiliary mounting structure according to an embodiment of the present utility model; and

fig. 7 is a schematic diagram showing the arrangement of electronic components mounted on the auxiliary mounting structure according to an embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

10. a case; 11. a mounting cavity; 111. a first mounting cavity; 112. a second mounting cavity; 20. a fixed mounting structure; 30. an auxiliary mounting structure; 31. a mounting plate; 32. a first rotational connection; 33. a first locking structure; 40. a partition plate; 50. a second rotational connection; 60. a second locking structure; 70. a threading hole; 80. a current transformer; 81. reclosing; 82. an alternating current miniature circuit breaker; 83. a ground row; 84. a lightning arrester; 85. backup protection ac circuit breakers; 86. an electric energy meter; 87. a knife switch.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 to 7 in combination, the present utility model provides a grid-connected box, which includes a box 10, the top of the box 10 is provided with an opening and a mounting cavity 11 communicating with the opening; the fixed mounting structure 20 is positioned at the bottom of the mounting cavity 11, and the fixed mounting structure 20 is arranged towards the opening and is parallel to the bottom wall of the box body 10; and an auxiliary mounting structure 30 provided in the mounting chamber 11 and dividing the mounting chamber 11 into a first mounting chamber 111 located at a lower side and a second mounting chamber 112 located at an upper side.

In the present embodiment, the top end of the case 10 is provided with an opening and a door (not shown in the drawing) that can seal the opening, i.e., the opening and closing of the case 10 is achieved by the door provided at the top thereof. The fixed mounting structure 20 is arranged at the bottom of the mounting cavity 11, the auxiliary mounting structure 30 is arranged above the fixed mounting structure 20, the mounting cavity 11 is divided into a first mounting cavity 111 and a second mounting cavity 112, the first mounting cavity 111 is a space between the auxiliary mounting structure 30 and the fixed mounting structure 20, and the second mounting cavity 112 is a space between the auxiliary mounting structure 30 and an opening of the box body 10. The auxiliary mounting structure 30 divides the case 10 into an upper layer and a lower layer, the mounting planes of the fixed mounting structure 20 and the auxiliary mounting structure 30 are both disposed toward the opening, a part of the electronic components are mounted on the fixed mounting structure 20 and located in the first mounting cavity 111, and another part of the electronic components are mounted on the auxiliary mounting structure 30 and located in the second mounting cavity 112. Because the case 10 is a double-layered structure, each electronic component is arranged on the installation planes of the fixed installation structure 20 and the auxiliary installation structure 30 in the horizontal direction, so that the height dimension of the case 10 can be reduced, and the overall dimension of the case 10 is convenient to transport and carry.

As shown in fig. 1, in one embodiment of the present utility model, the auxiliary mounting structure 30 includes a mounting plate 31, the mounting plate 31 is rotatably disposed on one side wall of the case 10, the mounting plate 31 has a mounting position parallel to the fixed mounting structure 20, and the mounting plate 31 further has a avoidance position at a predetermined angle with respect to the fixed mounting structure 20. The value range of the preset angle is 0-90 degrees.

In this embodiment, the preset angle refers to an angle formed by the mounting plate 31 and the fixed mounting structure 20 intersecting each other after the mounting plate 31 is lifted up and the respective length directions thereof are extended. One end of the mounting plate 31 can be turned upwards, the mounting plate 31 and the fixed mounting structure 20 are at a preset angle after turning, at this time, the fixed mounting structure 20 is exposed, and the required electronic components can be mounted on the fixed mounting structure 20 positioned at the lower layer. After the mounting is completed, the mounting board 31 is turned down to return to the mounting position parallel to the fixed mounting structure 20, and then the electronic component preset on the upper layer is mounted on the auxiliary mounting structure 30. When the electronic components on the lower layer are damaged and need to be maintained, the mounting plate 31 can be turned upwards, so that the electronic components on the lower layer can be maintained. Through the arrangement, the electronic component is convenient for workers to install and maintain. In addition, the preset angle has a value range of 0-90 degrees, so that the operator can maintain or replace the electronic components at the lower layer after the mounting plate 31 is turned upwards, and the problem that the grid-connected box is unstable due to overlarge turning angle of the mounting plate 31 can be avoided.

As shown in fig. 1, in one embodiment of the present utility model, the auxiliary mounting structure 30 further includes a first rotation connection structure 32, and the mounting plate 31 is rotatably provided on one side wall of the case 10 through the first rotation connection structure 32.

Through the arrangement, the mounting plate 31 can rotate for a certain angle relative to the fixed mounting structure 20, so that the mounting plate 31 can be positioned at the mounting position or the avoiding position, and the electronic components preset at the lower layer of the box body 10 can be conveniently mounted and maintained by workers.

In one embodiment of the present utility model, the first rotating connection structure 32 is a hinge, and the fixed mounting structure 20 and the auxiliary mounting structure 30 may be made of an insulating material or a metal material according to practical application scenarios.

Referring to fig. 1 and 2 in combination, in one embodiment of the present utility model, the auxiliary mounting structure 30 further includes a first locking structure 33, the first locking structure 33 and the first rotating connection structure 32 are located at opposite sides of the mounting plate 31, and a fixing structure capable of being engaged with the first locking structure 33 is provided on the case 10.

In this embodiment, the first locking structure 33 is disposed on the mounting plate 31 and located on the opposite side of the first rotating structure, the case 10 is provided with a fixing structure (not shown in the drawings), the first locking structure 33 can be locked with or disengaged from the fixing structure, when the first locking structure 33 can be locked with the fixing structure, the mounting plate 31 can be fixed at the mounting position so that the worker can mount the electronic component, and when the first locking structure 33 is disengaged from the fixing structure, the mounting plate 31 can be turned upward to facilitate the mounting and maintenance of the electronic component of the lower layer.

Referring to fig. 1 and 2 in combination, in one embodiment of the present utility model, the first locking structure 33 includes a locking piece rotatably disposed on the mounting plate 31, and the fixing structure includes a first groove, and the locking piece has a locked state engaged with the first groove and an unlocked state disengaged from the first groove.

In this embodiment, the first groove is disposed on the inner wall of the case 10, the locking piece has a locking state matched with the first groove and an unlocking state disengaged from the first groove, when the locking piece is in the locking state matched with the first groove, the mounting plate 31 can be fixed at the mounting position, so that the worker can mount the electronic component, and when the locking piece is in the unlocking state disengaged from the first groove, the mounting plate 31 can be turned upwards, thereby facilitating the mounting and maintenance of the lower electronic component.

Referring to fig. 1 and 2 in combination, in one embodiment of the present utility model, the mounting plate 31 is provided with a communication structure having an open state communicating with the first mounting chamber 111 and a closed state not communicating with the first mounting chamber 111 when the mounting plate 31 is in the mounting position.

In this embodiment, be provided with the communication structure on the mounting panel 31, when mounting panel 31 is in the mounted position, when need debug or maintain the electronic components of lower floor, can make the communication structure be in the open state, and at this moment, staff accessible communication structure maintains or debugs the electronic components of lower floor, and does not need to upwards turn up mounting panel 31, and the operation is more convenient. After debugging or maintenance is finished, the communication structure is in a closed state.

It should be noted that, the disconnecting link 87 can be opened when the communicating structure is convenient to overhaul, when the disconnecting link 87 is arranged on the auxiliary mounting structure 30 positioned on the upper layer, the communicating structure is not arranged on the mounting plate 31, when the disconnecting link 87 is arranged on the fixed mounting structure 20 positioned on the lower layer, the communicating structure is arranged on the mounting plate 31, and the communicating structure corresponds to the position of the disconnecting link 87.

Referring to fig. 1 and 2 in combination, in one embodiment of the present utility model, the communication structure includes a through hole, a partition plate 40, and a second rotational connection structure 50, and the partition plate 40 is rotatably covered at the through hole by the second rotational connection structure 50. The communication structure further includes a second locking structure 60, and the second locking structure 60 is disposed on an opposite side of the second rotary connecting structure 50 and is capable of locking and fixing an end of the partition 40 away from the second rotary connecting structure 50 to the mounting plate 31.

In the present embodiment, the partition plate 40 is rotatably provided with the through hole by the second rotation connecting structure 50, the second locking structure 60 is mounted on the partition plate 40 and located on the opposite side of the second rotation connecting structure 50, the mounting plate 31 is provided with the second groove capable of being engaged with the second locking structure 60, and the second locking structure 60 has the locked state capable of being engaged with the second groove and the unlocked state disengaged from the second groove. When the second locking structure 60 is in a locking state matched with the second groove, the through hole is blocked by the partition board, namely, the second mounting cavity 112 is not communicated with the first mounting cavity 111, and when the second locking structure 60 is in an unlocking state separated from the second groove, the partition board 40 can be turned upwards, at this time, the second mounting cavity 112 is not communicated with the first mounting cavity 111, so that the mounting and maintenance of the lower-layer electronic components are facilitated.

In one embodiment of the present utility model, the first and second locking structures 33 and 60 may be link locks or planar locks.

Referring to fig. 1 to 7 in combination, in one embodiment of the present utility model, the mounting plate 31 is provided with a threading hole 70 for the wire to pass in and out.

In this embodiment, since the box 10 has a double-layer structure, the electronic components in the box 10 are arranged in more ways than the existing grid-connected box. Because the threading holes 70 are formed in the mounting plate 31, the wire connection between the upper and lower layers of electronic components is facilitated, the number and positions of the threading holes 70 can be set according to the arrangement of the upper and lower layers of electronic components, and the wiring mode is more flexible. Meanwhile, the positions of the electronic components positioned on the upper layer and the lower layer can be adaptively adjusted according to the requirements, so that the length of the lead can be shortened, and the cost is reduced.

It should be noted that, in the embodiment of the present utility model, the threading hole 70 may have a circular shape, an oval shape or a rectangular shape.

Referring to fig. 2 to 4 in combination, in one embodiment of the present utility model, the fixed mounting structure 20 is provided with a recloser 81, an ac miniature circuit breaker 82, a ground bar 83, a knife switch 87, a lightning protector 84 and a backup protection ac circuit breaker 85; the auxiliary installation structure 30 is provided with an electric energy meter 86 and a current transformer 80, and the arrangement of the electric energy meter 86 and the current transformer 80 can be set according to fig. 2 or fig. 3. The partition 40 is opposite to the knife switch 87, and the partition 40 can be opened when the knife switch 87 is required to be opened for maintenance. The wire is reserved to a proper length so as not to influence the opening of the baffle plate 40 after threading. At this time, the auxiliary mounting structure 30 may be provided with no communication structure, and the position of the mounting plate 31 opposite to the knife switch 87 may be directly perforated, when the knife switch 87 needs to be maintained and disconnected, the knife switch 87 may be closed through the hole formed in the mounting plate 31, or the position of the mounting plate 31 opposite to the knife switch 87 may be perforated and mounted with an insulating plate, when the knife switch 87 needs to be maintained and disconnected, the insulating plate may be detached, and then the knife switch 87 may be closed through the hole formed in the mounting plate 31.

Referring to fig. 5 to 6 in combination, in one embodiment of the present utility model, the fixed mounting structure 20 is provided with a recloser 81, an ac miniature circuit breaker 82, a ground bar 83, a current transformer 80, a lightning protector 84, and a backup protection ac circuit breaker 85; the auxiliary mounting structure 30 is provided with a power meter 86 and a knife switch 87 as shown in fig. 6.

As shown in fig. 7, the auxiliary mounting structure 30 is provided with an electric energy meter 86, a knife switch 87, a lightning arrester 84, and a backup protection ac circuit breaker 85. In this case, the knife switch 87 is provided on the upper layer and can be operated directly, and thus the auxiliary mounting structure 30 may not be provided with a communication structure.

In the embodiment of the present utility model, the current transformer 80, the reclosing 81, the ac miniature circuit breaker 82, the ground bar 83, the lightning protection device 84, the backup protection ac circuit breaker 85, and the electric energy meter 86 may be disposed on the fixed mounting structure 20 or the auxiliary mounting structure 30 according to actual needs.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects: be provided with fixed mounting structure and supplementary mounting structure, fixed mounting structure sets up in the bottom of installation cavity, and supplementary mounting structure sets up in fixed mounting structure's top to separate into first installation cavity and second installation cavity with the installation cavity. The auxiliary mounting structure separates the box into an upper layer and a lower layer, the mounting planes of the fixed mounting structure and the auxiliary mounting structure are all arranged towards the opening, one part of electronic components are mounted on the fixed mounting structure and located in the first mounting cavity, and the other part of electronic components are mounted on the auxiliary mounting structure and located in the second mounting cavity. Because the box is bilayer structure, each electronic components arranges on fixed mounting structure and auxiliary mounting structure's mounting plane along the horizontal direction, consequently, can reduce the high size of box, make the whole size of box conveniently transport and carry.

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A grid tie box, comprising:

the box body (10), the top of the box body (10) is provided with an opening and a mounting cavity (11) communicated with the opening;

the fixed mounting structure (20) is positioned at the bottom of the mounting cavity (11), and the fixed mounting structure (20) is arranged towards the opening and is parallel to the bottom wall of the box body (10); and

an auxiliary mounting structure (30) is provided in the mounting chamber (11) and divides the mounting chamber (11) into a first mounting chamber (111) located on the lower side and a second mounting chamber (112) located on the upper side.

2. Grid tie box according to claim 1, characterized in that the auxiliary mounting structure (30) comprises a mounting plate (31), the mounting plate (31) being rotatably arranged on one side wall of the box body (10), the mounting plate (31) having a mounting position parallel to the fixed mounting structure (20), the mounting plate (31) further having a dodging position at a preset angle to the fixed mounting structure (20).

3. Grid tie box according to claim 2, characterized in that the auxiliary mounting structure (30) further comprises a first rotational connection structure (32), the mounting plate (31) being rotatably arranged on one side wall of the box body (10) by means of the first rotational connection structure (32).

4. A grid tie box according to claim 3, characterized in that the auxiliary mounting structure (30) further comprises a first locking structure (33), the first locking structure (33) and the first rotational connection structure (32) being located on opposite sides of the mounting plate (31), and the box body (10) being provided with a fixing structure capable of cooperating with the first locking structure (33).

5. The grid tie box according to claim 4, wherein the first locking structure (33) comprises a locking piece rotatably provided on the mounting plate (31), the fixing structure comprises a first groove, and the locking piece has a locking state cooperating with the first groove and an unlocking state disengaged from the first groove.

6. Grid tie box according to claim 2, characterized in that the mounting plate (31) is provided with a communication structure having an open state communicating with the first mounting cavity (111) and a closed state not communicating with the first mounting cavity (111) when the mounting plate (31) is in the mounting position.

7. The grid tie box according to claim 6, wherein the communication structure comprises a through hole, a partition plate (40) and a second rotation connection structure (50), and the partition plate (40) is rotatably covered at the through hole by the second rotation connection structure (50).

8. The grid tie box according to claim 7, wherein the communication structure further comprises a second locking structure (60), the second locking structure (60) being disposed on an opposite side of the second rotational connection structure (50) and capable of locking and fixing an end of the partition plate (40) away from the second rotational connection structure (50) to the mounting plate (31).

9. Grid tie box according to any of claims 2 to 8, characterized in that the mounting plate (31) is provided with threading holes (70) for the in and out of wires.

10. The grid tie box according to claim 2, wherein the preset angle has a value ranging from 0 ° to 90 °.