CN211981762U

CN211981762U - Inverter mounting bracket and inverter system

Info

Publication number: CN211981762U
Application number: CN202020560143.9U
Authority: CN
Inventors: 王绍春; 吴大浩
Original assignee: Gcl Energy Engineering Co ltd
Current assignee: Gcl Green Energy System Technology Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-11-20
Anticipated expiration: 2030-04-15

Abstract

The utility model relates to an inverter system and a mounting bracket thereof, wherein the mounting bracket comprises a base; the supporting frame comprises a plurality of upright columns which are arranged on the base and are arranged along a straight line, and a beam structure is arranged between every two adjacent upright columns; wherein, on the base in the both sides of support frame are formed with two rows of installation departments, and the installation department of every row includes a plurality of installation departments, installation department and the crossbeam structure one-to-one in the installation department of every row. Under the condition of the same number of inverters, the length of the inverter system of the embodiment is not much different from that of the inverter system of the traditional technology, but the distance between the inverters is small, so that the width of the inverter system is obviously reduced, the total volume of the inverter bracket is small, the material consumption is small, and the occupied area of the whole inverter system is small; the bridge is fixed on the base of the inverter mounting bracket, and the cable of the inverter is obliquely downward routed without bending to a large extent, so that the required length of the cable routing can be reduced.

Description

Inverter mounting bracket and inverter system

Technical Field

The utility model relates to a photovoltaic power generation technical field especially relates to an inverter mounting bracket and inverter system for installing string inverter.

Background

With the continuous development of social economy, photovoltaic power generation is rapidly developed as a clean energy source. The installation of solar photovoltaic systems on roofs is a common new type of distributed energy. In general, a string inverter is generally used in a photovoltaic power generation system of a roof. In the traditional technical scheme, the string-type inverters on the roof are independently installed. The inverter mounting bracket is mainly installed by using a balancing weight (suitable for a concrete flat roof) or a clamp (a color steel tile roof), and generally, one set of mounting bracket is used for each inverter, as shown in fig. 1, an inverter mounting bracket 1 in the prior art is illustrated, and an inverter 2 is mounted on the inverter mounting bracket. A plurality of such inverter mounting brackets 1 mount inverters 2 and are arranged in an array form, thereby constituting an inverter mounting bracket system.

In the inverter mounting bracket, the material of the mounting bracket is usually Q235B steel, the consumption of 1 inverter is about 40kg, and one set of mounting bracket is used for each inverter, so that the steel consumption of an inverter system is large, and the cost is high. In addition, the distributed installation of the inverters results in the roof area of about 1m for each inverter installation²And the overall occupied area of the inverter system is large, and the installation capacity of the roof photovoltaic power generation system is influenced finally.

In addition, the inverter mounting bracket system forms a photovoltaic power generation system, that is, a photovoltaic power station, together with the module and the grid-connected cabinet, and when the photovoltaic power station is built, a bridge for connecting and fixing a cable is provided in front of the inverter mounting bracket, and as shown in fig. 1, a bridge (not shown) is provided on the left side of the inverter mounting bracket. Therefore, the AC and DC cables of the inverter are wired through the bridge and finally connected into the power grid through the grid-connected cabinet. However, in this way, the ac and dc cables of the inverter need to be bent, the cable length is long, and the length of each of the ac and dc cables of the inverter is increased by about 1m due to the bent wire portion. The structure of the existing mounting bracket is difficult to meet the requirement of mounting the bridge, and the aim of mounting the bridge on the inverter mounting bracket to reduce the wiring length of alternating-current and direct-current cables cannot be achieved.

SUMMERY OF THE UTILITY MODEL

Therefore, the inverter mounting bracket is needed to be provided for solving the problems of large occupied area and low bracket utilization rate of the conventional inverter mounting mode. An inverter system based on the inverter mounting bracket is also provided.

An inverter mounting bracket comprising: a base; the supporting frame comprises a plurality of stand columns arranged on the base, the stand columns are arranged along a straight line, and a beam structure used for fixing the inverter is arranged between every two adjacent stand columns; the base is provided with two rows of installation parts on two sides of the supporting frame, each row of installation parts comprises a plurality of installation parts, and the installation parts in the installation parts of each row correspond to the beam structures one to one.

When the inverter mounting bracket forms an inverter system, inverters are respectively mounted on two sides of a beam structure of the support frame, and the inverters on the two sides are fixed on the beam structure in a back-to-back mode, so that the material consumption of the bracket can be reduced, and the occupied area of the inverter system is small; in addition, the bridge is fixed on the base of the inverter mounting bracket and is combined with the inverter mounting bracket, and the cable of the inverter can be obliquely laid downwards without bending to a greater degree, so that the required length of the cable can be reduced, and the cable cost is reduced.

In one embodiment, the base is plate-shaped.

In one embodiment, the base is rectangular, the supporting frame is located in the center of the base in the width direction of the base, and the plurality of upright posts are arranged along the length direction of the base.

In one embodiment, the beam structure includes a first beam and a second beam arranged in an up and down manner.

In one embodiment, all of the first cross members are integrally connected and all of the second cross members are integrally connected.

In one embodiment, all of the first cross members are a unitary member and all of the second cross members are a unitary member.

In one embodiment, at least one side of each upright post is provided with an inclined strut, and two ends of the inclined strut are respectively and fixedly connected with the upright post and the base.

An inverter system comprises the inverter mounting bracket of any one of the embodiments, wherein an inverter is fixed on each of two sides of each beam structure, a bridge fixed on the mounting portion is arranged below each inverter, and cables of each inverter are fixed to the corresponding bridge. According to the inverter system, the inverters are fixed on the beam structure in a back-to-back mode, so that the distance between the inverters is small, the width of the inverter system is obviously reduced, the total volume of the inverter bracket is smaller, the material consumption is less, and the occupied area of the whole inverter system is small. In addition, the bridge is fixed on the base of the inverter mounting bracket and is combined with the inverter mounting bracket, and the cable of the inverter can be obliquely laid downwards without bending to a greater degree, so that the required length of the cable can be reduced, and the cable cost is reduced.

In one embodiment, the inverter is fixed to the beam structure by bolts and nuts.

Drawings

Fig. 1 is a schematic view illustrating an inverter mounting method in the conventional art.

Fig. 2 is a schematic view of an installation manner of an inverter in an inverter system according to an embodiment of the present invention.

Fig. 3 is a schematic front view of an inverter system according to an embodiment of the present invention.

The relevant elements in the figures are numbered correspondingly as follows:

1. an inverter mounting bracket; 2. an inverter; 100. an inverter system; 10. an inverter mounting bracket; 110. A base; 112. an installation part; 120. a support frame; 121. a column; 122. a beam structure; 1221. a first cross member; 1222. a second cross member; 130. bracing; 20. an inverter; 210. a cable; 30. a bridge frame.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Conventionally, when forming an inverter array, one way is to install a plurality of inverters in a distributed manner and to place a bridge of each inverter on one side of an inverter mounting bracket. The inverter system has the advantages of large steel consumption, high cost, large occupied area, longer alternating current and direct current cable routing length of the inverter and higher cable cost.

To the above problem, the utility model provides an inverter mounting bracket, the inverter system based on this inverter mounting bracket formation have that the installing support material is few, entire system area is little, the crossing of dc-to-ac converter, advantage such as line length section are walked to the direct current cable. The following describes preferred embodiments of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 2, the inverter system 100 is illustrated in a state in which the inverter 20 is fixed to the inverter mounting bracket 10. The inverter mounting bracket 10 includes a base 110 and a support bracket 120. The support frame 120 is fixedly connected with the base 110, and the fixed connection mode of the support frame and the base at least comprises a bolt and nut connection mode, a screw connection mode, a mortise and tenon connection mode and the like. Preferably, the material of the supporting frame 120 is steel, but may be other suitable materials, such as high-strength insulating plastic.

As shown in fig. 2 and fig. 3, the supporting frame 120 includes a plurality of columns 121 disposed on the base 110, the plurality of columns 121 are arranged along a straight line, and a beam structure 122 for fixing the inverter 20 is disposed between two adjacent columns 121. That is, the inverter 20 is fixed to the beam structure 122. Two rows of mounting portions 112 are formed on the base 110 on two sides of the supporting frame 120, each row of mounting portions 112 includes a plurality of mounting portions 112, and the mounting portions 112 in each row of mounting portions 112 correspond to the beam structures 122 one to one.

Specifically, as shown in fig. 3, a beam structure 122 is disposed between two adjacent vertical columns 121, and the beam structure 122 is simultaneously and fixedly connected to two adjacent vertical columns 121. The beam structure 122 is used to mount and fix the inverter 20. In this way, a plurality of mounting structures for mounting and fixing the inverter 20, i.e., beam structures 122, are formed on the support frame 120 along the arrangement direction of the columns 121. As shown in fig. 2, both sides of the beam structure 122 may be used for mounting and fixing the inverter 20 at the same time. In fig. 3, as an example, 6 columns 121 arranged in a straight line are illustrated on the base 110. As shown in fig. 2 and 3, in the inverter mounting bracket 10, 5 inverters 20 can be simultaneously mounted on both sides of the support frame 120. It is to be understood that the number of inverters 20 specifically installed at each side of the support frame 120 is not limited to the above-mentioned 5. According to the different installation sites, when the number of the columns 121 of the support frame 120 is changed, the number of the inverters 20 specifically installed on each side of the support frame 120 is changed, and may be greater than 5, or less than 5.

As shown in fig. 2, the base 110 has mounting portions 112 formed on both sides of the supporting frame 120. The mounting portion 112 is used to secure the bridge 30. The bridge 30 is used for fixing the ac and dc cables 210 of the inverter 20. The mounting portions 112 in each row of mounting portions 112 correspond one-to-one with the beam structures 122. Thus, the base 110 is provided with a mounting portion 112 on each side of each beam structure 122. As shown in fig. 2 and fig. 3, when the base 110 is provided with 6 columns 121 arranged along a straight line, 5 mounting portions 112 are respectively provided on two sides of the supporting frame 120 on the base 110, and a bridge 30 is respectively fixed on each mounting portion 112.

In this embodiment, the inverters 20 are respectively installed on two sides of the beam structure 122 of the supporting frame 120, and the inverters 20 on two sides are fixed to the beam structure 122 in a back-to-back manner, which can reduce the material consumption of the bracket and occupies a small area. The concrete description is as follows.

Take the example of installing 10 inverters. When an inverter system is formed using the inverter mounting bracket 1 of the conventional art shown in fig. 1, 10 inverter mounting brackets 1 are required, and 10 inverter mounting brackets 2 are arranged in a 2 × 5 form. When the inverter system 100 is formed by using the inverter mounting bracket 10 of the present embodiment, 5 inverters 20 can be mounted on both sides of the inverter mounting bracket 10, and the inverters 20 are also arranged in a 2 × 5 pattern. Compared with the inverter system of the conventional technology, the inverter system 100 of the present embodiment has a small difference in length between the two, but the inverters 20 are fixed to the beam structure 120 in a "back-to-back" manner, so that the distance between the "back-to-back" inverters 20 is small, and therefore the width of the inverter system 100 of the present embodiment is significantly smaller than that of the inverter system 100 of the conventional technology, and therefore in the inverter system 100 of the present embodiment, the total volume of the inverter mounting bracket 10 is smaller, and the floor space of the entire inverter system 100 is small. Here, the length refers to the arrangement direction of 5 inverters 20 in a 2 × 5 array, and the width refers to the direction in which the inverters are stacked "back-to-back". Further, in the case of the same number of inverters 20, the inverter system 100 of the present embodiment occupies a small area, so that the inverter system 100 of the present embodiment can provide a larger power with the same installation area of the roof.

In addition, the inverter system 100 of the present embodiment can reduce the length of the cable 210 of the inverter 20 of the present embodiment. As shown in fig. 2, the bridge is fixed on the base 110 of the inverter mounting bracket 10 and is combined with the inverter mounting bracket 10, and the cable 210 of the inverter 20 is routed obliquely downward without being bent to a large extent, so that the length required for routing the cable 210 can be reduced, and the cost of the cable 210 can be reduced. Further, in the present embodiment, the base 110 is a mounting base contacting with a roof, the bridge 30 is fixed on the base 110 of the inverter mounting bracket 10, and the bridge 30 is closer to the roof, so that the center of gravity of the entire inverter system 100 is lower, the mounting is more stable, and the requirement for the weight block for fixing the base 110 is relatively lower.

In some embodiments, the base 110 is provided in a plate shape. In this case, the lower surface of the base 110 is attached to the roof, and the mounting portion 112 is the upper surface of the base 110. The plate-shaped base 110 is designed such that: on the one hand, the base 110 can have a larger contact area with the roof; on the other hand, the bridge 30 may be placed on a plane and then fixed, and thus, the bridge 30 can be very conveniently integrated with the inverter mounting bracket 10.

In practical implementation, the base 110 is rectangular, the supporting frame 120 is located at the center of the base 110 in the width direction of the base 110, and the plurality of columns 121 are arranged along the length direction of the base 110. As shown in fig. 2, the width direction of the base 110 is the left-right direction in fig. 2, and the length direction of the base 110 is the direction perpendicular to the drawing plane in fig. 2; as shown in fig. 3, the width direction of the base 110 is a direction perpendicular to the drawing plane in fig. 3, and the length direction of the base 110 is the left-right direction in fig. 3. The support frame 120 is located at the center of the base 110, and when the inverter 20 is installed, the center of gravity of the entire support frame 120 is located substantially on the center line in the width direction of the base 110, and the stability of the inverter system 100 is good.

In other embodiments, the base 110 is not limited to a plate-like structure. For example, the base 110 may be formed by combining a plurality of steel materials by welding, bolt and nut connection, or the like. In this case, the base 110 may be formed in a lattice structure, the pillars 121 may be fixed to lattice lines of the lattice structure, and openings of the lattice structure may be used as the mounting portions 112. The bridge may be positioned in the opening of the grid structure when the bridge is installed.

The beam structure 122 may take a variety of forms. The beam structure 122 may include one or more beams. In one particular embodiment, as shown in fig. 3, the beam structure 122 includes a first beam 1221 and a second beam 1222 arranged in an up and down manner. Two ends of the first cross beam 1221 are respectively fixedly connected with two adjacent vertical columns 121. Two ends of the second beam 1222 are fixedly connected to two adjacent columns 121, respectively. The fixed connection form is not limited and comprises bolt and nut connection, screw connection, tenon-and-mortise connection and the like.

The first and

second beams

1221 and 1222 serve to support the inverter 20 at the same time when the inverter 20 is installed. As shown in fig. 2, the upper portion of the inverter 20 is fixed to the first beam 1221 by bolts and nuts, and the lower portion of the inverter 20 is fixed to the second beam 1222 by bolts and nuts. Each beam structure 122 is fixed with the upright columns 121 on the two sides, and the beam structures 122 are firmer; and the upper and lower parts of the inverter 20 are respectively fixed to the support frame 120, the combination of the inverter 20 and the support frame 120 is relatively reliable.

In the above embodiment, all the first beams 1221 are connected to one body, and all the second beams 1222 are connected to one body. That is, along the arrangement direction of the columns 121, the first beams 1221 are connected end to end, and the second beams 1222 are connected end to end. In this way, all the first beams 1221 form an integral structure and are connected to the columns 121, and all the second beams 1222 form an integral structure and are connected to the columns 121, so that the stability of the whole supporting frame 120 is high.

In one embodiment, the first cross-member 1221 is a separate body but is connected together end-to-end using fasteners; the first cross-beam 1221 is a separate body but is connected together end-to-end using fasteners. In another specific embodiment, all of the first beams 1221 are a single piece and all of the second beams 1222 are a single piece. In this case, it can also be understood that the supporting frame 120 includes an upper cross member and a lower cross member, the upper cross member and the lower cross member extend from the first upright 121 to the last upright 121, and there is a fixed connection relationship between the upper cross member and the lower cross member and each upright 121.

As shown in fig. 2, in order to increase the strength and stability of the supporting bracket 120, the inverter 20 is not stable enough after being installed. In some embodiments, a diagonal brace 130 is disposed on the right side of each upright 121, and two ends of the diagonal brace 130 are fixedly connected to the upright 121 and the base 110, respectively. In one embodiment, the angle between the brace 130 and the top surface of the base 110 is 45 degrees. A triangular structure is formed between each upright 121, the inclined strut 130 and the base 110, so that the stability of the inverter mounting bracket 10 and the inverter system 100 is improved by using the advantage of good stability of the triangle. In addition, a brace 130 may also be provided to the left of each upright 121.

In the above embodiment, the two ends of the inclined strut 130 are fixedly connected to the upright 121 and the base 110, respectively, so that the inclined strut 130 does not affect the installation of the inverter 20 and the bridge 30 while increasing the strength and stability of the supporting member 120.

As shown in fig. 2, in some embodiments, the mounting portion 112 has a plurality of through holes (not numbered). When the bridge is installed, bolts are used to pass through the through holes and the bridge 30, and then nuts are used to fasten. In other embodiments, the mounting portion 112 may be only one bearing plane, and the bridge 30 may be placed on the bearing plane and then pressed against the bridge 30 by the weight when the bridge 30 is mounted. If the base 110 is a flat plate, the mounting portion 112 is a plurality of mounting areas formed on the upper surface of the base 110, the surfaces of the mounting areas are flush with or recessed appropriately from the upper surface of the base 110 to position the bridge 30, and when the bridge 30 is mounted, the bridge 30 is placed on the mounting portion 112, and then the bridge 30 is pressed by a weight.

As shown in fig. 2 and 3, in another embodiment of the present invention, an inverter system 100 is provided. The inverter system 100 is formed based on the inverter mounting bracket 10 of any of the foregoing embodiments. An inverter 20 is fixed on each of the two sides of each beam structure 122, a bridge fixed to the mounting portion 112 is disposed below each inverter 20, and the cable 210 of each inverter 20 is fixed to the corresponding bridge 30.

An inverter 20 is secured to each side of the beam structure 122 in a "back-to-back" manner. The inverter 20 may be fixed to the beam structure 122 by bolts and nuts. When the beam structure 122 includes a plurality of beams, the inverter 20 is fixedly connected to the plurality of beams at the same time.

In the inverter system 100 of the embodiment, the inverters 20 are respectively installed on two sides of the beam structure 122 of the supporting frame 120, and the inverters 20 on two sides are fixed on the beam structure 122 in a back-to-back manner, which can reduce the material consumption of the bracket and reduce the system floor area.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An inverter mounting bracket, comprising:

a base;

the supporting frame comprises a plurality of stand columns arranged on the base, the stand columns are arranged along a straight line, and a beam structure used for fixing the inverter is arranged between every two adjacent stand columns;

the base is provided with two rows of installation parts on two sides of the supporting frame, each row of installation parts comprises a plurality of installation parts, and the installation parts in the installation parts of each row correspond to the beam structures one to one.

2. The inverter mounting bracket of claim 1, wherein the base is plate-shaped.

3. The inverter mounting bracket according to claim 2, wherein the base has a rectangular shape, the support frame is located at a center of the base in a width direction of the base, and the plurality of columns are arranged in a length direction of the base.

4. The inverter mounting bracket of claim 1, wherein the beam structure includes a first beam and a second beam arranged in an up and down manner.

5. The inverter mounting bracket of claim 4, wherein all of the first cross members are integrally connected and all of the second cross members are integrally connected.

6. The inverter mounting bracket of claim 5, wherein all of the first cross members are one piece and all of the second cross members are one piece.

7. The inverter mounting bracket of claim 1, wherein at least one side of each upright post is provided with a diagonal brace, and two ends of the diagonal brace are fixedly connected with the upright post and the base respectively.

8. The inverter mounting bracket of claim 1, wherein the mounting portion defines a plurality of through holes.

9. An inverter system comprising the inverter mounting bracket of any one of claims 1 to 8, wherein an inverter is fixed to each of both sides of each beam structure, a bridge fixed to the mounting portion is provided below each inverter, and a cable of each inverter is fixed to the corresponding bridge.

10. The inverter system according to claim 9, wherein the inverter is fixed to the beam structure by bolts and nuts.