CN216904733U

CN216904733U - Purlin for photovoltaic support and solar photovoltaic power generation system containing same

Info

Publication number: CN216904733U
Application number: CN202123438651.3U
Authority: CN
Inventors: 尹卫国; 王正军
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-07-05
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a purline for a photovoltaic support and a solar photovoltaic power generation system comprising the same, and belongs to the technical field of machinery. The utility model provides a purlin for a photovoltaic bracket, which comprises an upper flange plate, a lower flange plate and a web plate, wherein the upper flange plate is connected with the lower flange plate through the web plate, the upper flange plate and the lower flange plate are arranged in parallel, and an acute included angle of 55 degrees is formed between the web plate and the lower flange plate; the design of the acute included angle of 55 degrees enables the vertical stress intensity of the purline for the photovoltaic support to be increased, and the problem of strength reduction of the purline for the existing solar photovoltaic support due to the fact that the purline is in an inclined stress state after installation is solved.

Description

Purlin for photovoltaic support and solar photovoltaic power generation system containing purlin

Technical Field

The utility model relates to a purline for a photovoltaic support and a solar photovoltaic power generation system comprising the same, and belongs to the technical field of machinery.

Background

The photovoltaic bracket is a special bracket designed for mounting a photovoltaic module in a solar photovoltaic power generation system. The photovoltaic support and the photovoltaic module jointly form a solar photovoltaic power generation system. Purlins are the transverse flexural members of photovoltaic supports, generally consisting of two flange plates parallel to each other and a web connecting the two flange plates.

The web of the purlin that current photovoltaic support used all sets up to be the perpendicular to flange board. However, under the influence of sunlight angle, the photovoltaic module should be installed on the purline with a certain inclination angle (35 °). This has caused the used purlin of current photovoltaic support because be in the state of slope atress after the installation, and intensity drops more than 30%.

In order to solve the problem, the engineering requirement is met by thickening and increasing purlines used by the photovoltaic support. However, thickening and increasing the purlines used by the photovoltaic support can not only increase the installation cost of the photovoltaic module, but also reduce the installation efficiency of the photovoltaic module.

Except this in addition, when using the used purlin of current photovoltaic support to install photovoltaic module, must punch on the purlin earlier, just can link together the used purlin of photovoltaic support and photovoltaic module through the bolt, and this kind of connected mode easily causes the used purlin stress position of photovoltaic support to concentrate, and then leads to the used purlin intensity of photovoltaic support to reduce.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a purlin for a photovoltaic bracket, which comprises an upper flange plate, a lower flange plate and a web plate; the upper flange plate and the lower flange plate are connected through a web plate; the upper flange plate and the lower flange plate are arranged in parallel; an acute included angle is formed between the web plate and the lower flange plate.

In one embodiment of the present invention, the acute included angle is 40 to 60 °.

In one embodiment of the utility model, the acute included angle is 55 °.

In an embodiment of the present invention, a thickness of the lower flange plate on a side away from the acute included angle is 10 to 70% greater than a thickness of the lower flange plate on a side close to the acute included angle.

In one embodiment of the present invention, the thickness of the side of the lower flange plate away from the acute included angle is 50% greater than the thickness of the side of the lower flange plate close to the acute included angle.

In one embodiment of the utility model, the thickness of the upper flange plate is 1.5-3 mm, and the width of the upper flange plate is 35-50 mm; the thickness of the web plate is 1.5-3 mm; the thickness of one side, close to the acute included angle, of the lower flange plate is 1.5-3 mm, and the width of the lower flange plate is 25-40 mm; the thickness of one side, away from the acute angle included angle, of the lower flange plate is 2-4 mm, and the width of the lower flange plate is 8-12 mm; the distance between the upper flange plate and the lower flange plate is 45-55 mm.

In one embodiment of the utility model, the upper flange plate has a thickness of 2mm and a width of 42 mm; the thickness of the web is 2 mm; the thickness of one side, close to the acute angle included angle, of the lower flange plate is 2mm, and the width of the lower flange plate is 32 mm; the thickness of one side, away from the acute angle included angle, of the lower flange plate is 3mm, and the width of the lower flange plate is 10 mm; the distance between the upper flange plate and the lower flange plate is 48 mm.

In an embodiment of the utility model, the material of the purlin for the photovoltaic bracket is aluminum alloy.

The utility model also provides a solar photovoltaic power generation system, which comprises a plurality of photovoltaic modules and photovoltaic supports for mounting the photovoltaic modules; the photovoltaic support is composed of a plurality of purlines for the photovoltaic support.

In an embodiment of the utility model, the photovoltaic module is fixed on the purlin for the photovoltaic bracket through the connecting assembly.

In one embodiment of the utility model, the connecting assembly comprises a U-shaped bolt and a middle pressure plate; both ends of the U-shaped bolt are sleeved with a gasket and a nut; the middle part of the middle pressing plate is sunken towards the direction of the purline for the photovoltaic bracket; the parts of the middle pressure plate which are not sunken are two clamping wings; the U-shaped bolt fixes the middle pressing plate and the purline for the photovoltaic support together, wherein the concave part of the middle pressing plate penetrates through the bending part of the U-shaped bolt, two straight edges of the U-shaped bolt are respectively attached to an upper flange plate and a lower flange plate of the purline for the photovoltaic support, and the gasket is clamped between the nut and the purline for the photovoltaic support, so that a clamping wing of the middle pressing plate and a web plate of the purline for the photovoltaic support jointly form a clamping port for accommodating a photovoltaic assembly; and the photovoltaic module is fixed on the purline for the photovoltaic bracket through the clamping interface.

The technical scheme of the utility model has the following advantages:

the utility model provides a purlin for a photovoltaic bracket, which comprises an upper flange plate, a lower flange plate and a web plate, wherein the upper flange plate is connected with the lower flange plate through the web plate, the upper flange plate and the lower flange plate are arranged in parallel, and an acute included angle of 55 degrees is formed between the web plate and the lower flange plate; the design of 55 acute included angles makes the perpendicular atress intensity of purlin for the photovoltaic support increase, has solved the used purlin of current solar photovoltaic support and has been in the problem of the decline of intensity that the state of slope atress leads to after the installation, and, the design of 55 acute included angles makes the purlin for the photovoltaic support when using, and the harmless connection between accessible U type bolt completion and the photovoltaic module need not to punch, has eliminated the defect that local support, concentrated atress between purlin for the photovoltaic support and the photovoltaic module, has reached balanced atress, stable in structure's purpose.

Further, the lower flange plate of the purlin for the photovoltaic bracket is reinforced on the side far away from the acute included angle; through analysis, the lower flange plate of the purlin for the photovoltaic support is a stressed part which is easy to deform at one side far away from the acute angle, the vertical stress strength of the purlin for the photovoltaic support can be further increased by reinforcing the lower flange plate, and the problem of strength reduction caused by the fact that the purlin for the existing solar photovoltaic support is in an inclined stressed state after being installed is further solved.

Further, the purline for the photovoltaic bracket is made of aluminum alloy; compared with a steel purline, the aluminum alloy is reduced by more than 70% in weight and is increased by 20% in strength, and compared with a purline made of common aluminum 6063, the strength of the aluminum alloy is increased by more than 50%, so that the purline for manufacturing the photovoltaic bracket by using the aluminum alloy is low in comprehensive cost and convenient to install; the photovoltaic panel assembly is usually made of aluminum, when the steel purline is in contact with the aluminum photovoltaic panel assembly, galvanic corrosion is easy to occur on the frame, and the phenomenon is avoided by aluminum alloy; the aluminum alloy has excellent conductivity, and can better generate weak current in a solar photovoltaic bracket system due to various reasons; steel purlins, especially the welded areas of steel purlins, are fragile and fragile in low-temperature environments, while the strength of aluminum alloys is increased in low-temperature environments.

Drawings

FIG. 1: the overall structure schematic diagram of one embodiment of purlin for photovoltaic support.

FIG. 2: a schematic diagram of a portion of one embodiment of a solar photovoltaic power generation system.

In the drawings 1-2, an upper flange plate 1, a lower flange plate 2, a web 3, an included angle 4, a photovoltaic module 5, a purline 6 for a photovoltaic support, a U-shaped bolt 7, a middle pressure plate 8, a gasket 9, a nut 10, a recess 11, a clamping wing 12, a bend 13, a straight edge 14 and a clamping interface 15.

Detailed Description

The utility model will be further elucidated with reference to the embodiments and the drawings.

Example 1: purlin for photovoltaic support

As shown in fig. 1, the present embodiment provides a purlin for a photovoltaic bracket, which includes an upper flange plate 1, a lower flange plate 2 and a web 3; the upper flange plate 1 and the lower flange plate 2 are connected through a web plate 3; the upper flange plate 1 and the lower flange plate 2 are arranged in parallel; an acute included angle 4 of 55 degrees is formed between the web plate 3 and the lower flange plate 2; the thickness of the upper flange plate 1 is 2mm, and the width of the upper flange plate is 42 mm; the thickness of the web plate 3 is 2 mm; the thickness of one side, close to the acute angle 4, of the lower flange plate 2 is 2mm, and the width of the side is 32 mm; the thickness of one side, away from the acute angle 4, of the lower flange plate 2 is 3mm, and the width of the other side is 10 mm; the distance between the upper flange plate 1 and the lower flange plate 2 is 48 mm; the purline for the photovoltaic support is made of aluminum alloy.

Example 2: solar photovoltaic power generation system

As shown in fig. 2, the present embodiment provides a solar photovoltaic power generation system, which includes a plurality of photovoltaic modules 5, and a photovoltaic support for mounting the photovoltaic modules 5; the photovoltaic bracket consists of a plurality of purlins 6 for the photovoltaic bracket in the embodiment 1; the photovoltaic module 5 is fixed on a purline 6 for the photovoltaic bracket through a connecting assembly 5; the connecting assembly 5 comprises a U-shaped bolt 7 and an intermediate pressure plate 8; both ends of the U-shaped bolt 7 are sleeved with a gasket 9 and a nut 10; the middle part of the middle pressing plate 8 is sunken 11 towards the direction of the purline 6 for the photovoltaic bracket; the part of the middle pressure plate 8 without the recess 11 is provided with two clamping wings 12; the U-shaped bolt 7 fixes the middle pressing plate 8 and the purline 6 for the photovoltaic support together, wherein a concave 11 of the middle pressing plate 8 penetrates through a bending part 13 of the U-shaped bolt 7, two straight edges 14 of the U-shaped bolt 7 are respectively attached to an upper flange plate 1 and a lower flange plate 2 of the purline 6 for the photovoltaic support, and the gasket 9 is clamped between the nut 10 and the purline 6 for the photovoltaic support, so that a clamping wing 12 of the middle pressing plate 8 and a web 3 of the purline 6 for the photovoltaic support form a clamping opening 15 for accommodating the photovoltaic module 5 together; the photovoltaic module 5 is fixed on the purline 6 for the photovoltaic support through the clamping interface 15.

Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The purlin for the photovoltaic bracket is characterized by comprising an upper flange plate, a lower flange plate and a web plate; the upper flange plate and the lower flange plate are connected through a web plate; the upper flange plate and the lower flange plate are arranged in parallel; an acute included angle is formed between the web plate and the lower flange plate.

2. The purlin of claim 1, wherein the acute included angle is 40-60 °.

3. The purlin of claim 2, wherein the acute included angle is 55 °.

4. The purlin of claim 3, wherein the thickness of the side of the lower flange plate away from the acute included angle is 10-70% greater than the thickness of the side of the lower flange plate near the acute included angle.

5. The purlin of claim 4, wherein the thickness of the lower flange plate on the side away from the acute included angle is 50% greater than the thickness of the lower flange plate on the side closer to the acute included angle.

6. The purline for photovoltaic supports according to claim 5, wherein the top flange plate has a thickness of 1.5 to 3mm and a width of 35 to 50 mm; the thickness of the web plate is 1.5-3 mm; the thickness of one side, close to the acute included angle, of the lower flange plate is 1.5-3 mm, and the width of the lower flange plate is 25-40 mm; the thickness of one side, away from the acute angle included angle, of the lower flange plate is 2-4 mm, and the width of the lower flange plate is 8-12 mm; the distance between the upper flange plate and the lower flange plate is 45-55 mm.

7. The purlin of claim 6, wherein the top flange plate has a thickness of 2mm and a width of 42 mm; the thickness of the web is 2 mm; the thickness of one side, close to the acute angle included angle, of the lower flange plate is 2mm, and the width of the lower flange plate is 32 mm; the thickness of one side, away from the acute angle included angle, of the lower flange plate is 3mm, and the width of the lower flange plate is 10 mm; the distance between the upper flange plate and the lower flange plate is 48 mm.

8. The solar photovoltaic power generation system is characterized by comprising a plurality of photovoltaic modules and photovoltaic supports for mounting the photovoltaic modules; the photovoltaic bracket is composed of a plurality of purlins for the photovoltaic bracket as claimed in any one of claims 1 to 7.

9. The solar photovoltaic power generation system of claim 8, wherein the photovoltaic module is fixed on the purlin for photovoltaic support of any one of claims 1 to 7 through a connecting assembly.

10. The solar photovoltaic power generation system of claim 9, wherein the connection assembly comprises a U-bolt and an intermediate pressure plate; both ends of the U-shaped bolt are sleeved with a gasket and a nut; the middle part of the middle pressing plate is sunken towards the direction of the purline for the photovoltaic bracket; the part of the middle pressure plate which is not sunken is provided with two clamping wings; the U-shaped bolt fixes the middle pressure plate and the purline for the photovoltaic support together, wherein a concave part of the middle pressure plate penetrates through a bending part of the U-shaped bolt, two straight edges of the U-shaped bolt are respectively attached to an upper flange plate and a lower flange plate of the purline for the photovoltaic support, and the gasket is clamped between the nut and the purline for the photovoltaic support, so that a clamping opening for accommodating a photovoltaic assembly is formed by a clamping wing of the middle pressure plate and a web plate of the purline for the photovoltaic support; and the photovoltaic module is fixed on the purline for the photovoltaic bracket through the clamping interface.