CN218920345U

CN218920345U - Photovoltaic tracking unit

Info

Publication number: CN218920345U
Application number: CN202222765410.8U
Authority: CN
Inventors: 孙涛; 王淼; 黄鹤; 张媛媛; 王猛; 杨超; 黄雷; 李伟; 张楠; 王永强; 田辉; 张洁; 魏丹; 刘奂麟; 张亚妮
Original assignee: China Construction First Group Corp Ltd; China Construction First Bureau Group Decoration Engineering Co Ltd
Current assignee: China Construction First Group Corp Ltd; China Construction First Bureau Group Decoration Engineering Co Ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-04-25
Anticipated expiration: 2032-10-20

Abstract

The application discloses photovoltaic tracking unit includes: the photovoltaic module comprises a support (11), a photovoltaic module fixing device (12), a photovoltaic module (13) and a damper (14); the photovoltaic module fixing device (12) is provided with the photovoltaic module (13), a first end of the damper (14) is connected with the supporting piece (11), a second end of the damper is connected with the photovoltaic module (13) fixing device and used for limiting the pitching movement range of the photovoltaic module fixing device (12), and the damper is connected with the photovoltaic module fixing device and the supporting piece, so that the damper is contained by the damper when the photovoltaic module fixing device performs pitching movement and cannot exceed the preset movement range.

Description

Photovoltaic tracking unit

Technical Field

The application relates to the technical field of solar power generation, in particular to a photovoltaic tracking unit.

Background

In the related art, in the photovoltaic flat axis tracking unit, a photovoltaic module fixing device is driven by a controller, a motor and a transmission device to adjust an angle and perform pitching motion so as to drive the photovoltaic module to track the motion of the sun, and the solar energy utilization rate is improved. However, due to various control reasons, the movement position of the photovoltaic module fixing device is often out of a predetermined range, which affects the expected sun tracking effect. It can also result in the photovoltaic module being difficult to form a clean plane with the photovoltaic modules of other photovoltaic flat axis tracking units.

Disclosure of Invention

The main object of the present application is to provide a photovoltaic tracking unit to solve the above problems.

To achieve the above object, according to one aspect of the present application, a photovoltaic tracking unit includes: the photovoltaic module comprises a support piece, a photovoltaic module fixing device, a photovoltaic module and a damper; wherein the photovoltaic module is arranged on the photovoltaic module fixing device; a first end of the damper is connected with the supporting piece; the second end is connected with the photovoltaic module fixing device; and the device is used for limiting the pitching movement range of the photovoltaic module fixing device.

In one embodiment, the damper includes: the damper comprises a damper body, damper connecting parts are respectively arranged at two ends of the damper body, and a circular ring is arranged at the top end of each damper connecting part.

In one embodiment, the device further comprises a first connection base and a second connection base;

the first connection base is used for connecting the first end of the damper and the supporting piece;

the second connection base is used for connecting the second end of the damper and the photovoltaic fixing device.

In one embodiment, the first connection base includes: a first connection portion and a second connection portion;

the first connecting part is vertical to the second connecting part;

the first connecting part is used for connecting the supporting piece;

the second connecting part is used for connecting the first circular ring at the first end of the damper.

In one embodiment, the first connection portion is provided with a plurality of through holes; the through holes are used for fixedly connecting with the supporting piece 11.

In one embodiment, the second connecting portion is provided with a connecting member; the connecting piece is used for connecting a first circular ring at the first end of the damper.

In one embodiment, the top end of the connecting piece is provided with a connecting ring for connecting with a first ring at the first end of the damper; the bottom of the connecting piece is fixed on the second connecting part; when the connecting piece is installed, the first circular ring is aligned with the top circular ring of the connecting piece, and the first circular ring is connected with the top circular ring of the connecting piece through bolts.

In one embodiment, the connector is a U-shaped structure; the connector includes: two straight line parts and a middle-built bending part which are oppositely arranged, wherein each straight line part is respectively provided with a corresponding through hole for being connected with a first circular ring at the first end of the damper; during installation, the first circular ring stretches into the U-shaped opening of the connecting piece, the through holes in the two straight line parts are aligned with the first circular ring, and the through holes are connected through bolts.

In one embodiment, the photovoltaic module fixture includes: purlin, purlin diagonal bracing and girder;

the purline is fixedly connected with the photovoltaic module;

two ends of the purline are respectively provided with a purline diagonal bracing, and one end of the purline diagonal bracing is fixedly connected with one end of the purline;

the other end of the purline diagonal brace is fixedly connected with the main beam;

and the second end of the damper is connected with the purlin diagonal bracing.

In one embodiment, the first connection base and the second connection base are provided with a zinc plating layer.

The above-mentioned photovoltaic tracking unit of this application owing to set up the attenuator, and photovoltaic module fixing device and support piece have been connected to the attenuator, so when photovoltaic module fixing device is carrying out the every single move motion, will be held down by this attenuator, and can not surpass predetermined range of motion. The method has positive effects and significance for improving the plane consistency of the photovoltaic module, reducing the occurrence of wave planes and protecting the whole mechanical structure of the whole photovoltaic tracking unit.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the application and to provide a further understanding of the application with regard to the other features, objects and advantages of the application. The drawings of the illustrative embodiments of the present application and their descriptions are for the purpose of illustrating the present application and are not to be construed as unduly limiting the present application. In the drawings:

FIG. 1 is a block diagram of a photovoltaic tracking unit according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a photovoltaic tracking unit according to an embodiment of the present application;

FIG. 3 is a schematic structural view of a damper according to an embodiment of the present application;

FIG. 4 is a block diagram of another photovoltaic tracking unit according to an embodiment of the present application;

FIG. 5 is a schematic structural view of a connector according to an embodiment of the present application;

fig. 6 is a schematic structural view of another connector according to an embodiment of the present application.

Description of the reference numerals

11-a support; 12-photovoltaic module fixing device; 121-purlin; 122-purlin diagonal bracing; 13-a photovoltaic module; 14-a damper; 141-a damper body; 142-damper connection; 143-a ring; 151-a first connection base; 152-a second connection base; 1511-a first connection; 1512-a second connection; 1513-connectors; 15121-a through hole; 15131-straight line portion; 15132-bends; 15133-a through hole; 15134-a connector ring.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present utility model will be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

A photovoltaic tracking unit, see fig. 1, comprising: support 11, photovoltaic module fixture 12, photovoltaic module 13, and damper 14.

Wherein the photovoltaic module 13 is arranged on the photovoltaic module fixing device 12; a first end of the damper 14 is connected to the support 11; the second end is connected with the photovoltaic module fixing device 12; for limiting the range of pitch motion of the photovoltaic module fixture 12.

In some embodiments, the damper may be a ZN-TS500-PYS14 type damper.

Referring to fig. 2, the photovoltaic module fixture 12 includes: purlin 121, purlin diagonal bracing 122, girder 123; purlin bracing 122 is still provided with respectively at the both ends of purlin 131, the one end fixed connection of purlin bracing 122 the one end of purlin 121, the other end fixed connection girder 123. The purline 121 is fixedly connected with the photovoltaic module; a second end of the damper 14 is connected to the purlin bracing 122.

In some embodiments, each purlin 131 and the corresponding two purlin diagonal braces 122 form a set of brackets for supporting the photovoltaic module 13, and multiple sets of brackets may be disposed on the main beam 123 at equal intervals in parallel. When there are multiple sets of brackets, the second end of the damper 14 is connected to the closest purlin bracing 122.

In some embodiments, the purlins 121 and the purlin diagonal braces 122 are respectively provided with corresponding through holes, and the purlins 121 and the purlin diagonal braces 132 are fixedly connected by fixing members passing through the through holes of the purlins 121 and the purlin diagonal braces 122; wherein the through holes are located on the purlins 121 and purlin diagonal braces 122 near the main beams 123.

In some embodiments, as shown in FIG. 2, the dampers 14 may be provided in two because the number of diagonal braces 122 is two, one diagonal brace 122 being connected to each damper. Specifically, a first end of the first damper may be mounted on a side wall of the front surface of the support 11, and a second end of the first damper is connected to the first diagonal brace 122. A first end of a second damper may be installed on the side wall of the rear surface of the support 11, and a second end of the second damper is connected to the second diagonal brace 122.

In actual operation, when driven by the controller and the motor, the main beam 123 rotates, so as to drive the purline 121 and the purline diagonal brace 122 to move, and further drive the installed photovoltaic module 13 to realize pitching motion. The angle at which the main beam 123 rotates is under the control of the controller. Either clockwise or counterclockwise. The motor drives the girder to rotate through the transmission mechanism. The transmission is implemented in a variety of ways, and in some embodiments, the transmission includes: the roller, the steel wire rope, the first pulley, the second pulley, the driven wheel and the connecting base; the output shaft of the motor is sleeved with the roller; the steel wire rope is wound on the roller; the driven wheel is connected with the main beam through the connecting base. The connecting base is provided with a groove, and the main beam is embedded into the groove and fixed by the pressing plate and the fastener. The two brackets are respectively arranged on two sides, a double-end bearing is arranged at the intersection point of the top ends of the two brackets on each side, a rotating shaft is sleeved in the two double-end bearings, and a driven wheel is sleeved on the outer rings of the two double-end bearings on two sides, so that the rotation around the rotating shaft can be realized. When the driven wheel rotates, the connected main beam can be driven to rotate. The driven wheel can be in a fan-shaped structure and comprises an arc edge, a first linear edge and a second linear edge; the first end of the steel wire rope passes through the first pulley and is fixed at one end of the driven wheel; specifically, after the first section of the wire rope passes through the first pulley, the first section of the wire rope passes through the groove in the first linear part along the first groove in the circular arc edge of the driven wheel, reaches the second end of the driven wheel, and is fixed by adopting a movable joint bolt. The second end of the steel wire rope passes through the second pulley and is fixed at the second end of the driven wheel; specifically, after passing through the second pulley, the second end of the wire rope passes through the groove in the second linear portion along the second groove in the circular arc edge of the driven wheel, and reaches the second end of the driven wheel to be fixed. The joint bolts may be used for fixation. Thus, when the motor rotates in a first direction, for example, clockwise, the driven wheel can be pulled by the steel wire rope to rotate in the first direction, for example, the left direction, so that the main beam is driven to rotate in one direction. When the motor rotates in a second direction, e.g., counter-clockwise, the driven wheel may be pulled by the wire rope to rotate in the second direction, which may be, e.g., a right direction. Thereby driving the main beam to rotate in the other direction.

As can be seen from the above, the transmission mechanism is complicated, and various reasons of the controller, the motor, and the transmission mechanism may cause the rotation angle of the main beam to exceed a predetermined angle, or the movement amplitude of the purline 121 and the purline diagonal brace 122 to be too large to exceed a predetermined position, and in this case, a damper is required to be able to pull the purline 121, or the purline diagonal brace 122, so as to achieve the purpose of restricting the above-mentioned photovoltaic module fixing device 12 from exceeding the predetermined position.

In order to play a role in damping protection in both the clockwise direction and the counterclockwise direction, the dampers 14 may be respectively arranged on the purlin diagonal braces 122 on both sides, so as to play a role in protecting both directions. Also, the damper 14 has a positive effect of shock absorption due to its elastic properties.

According to the technical scheme, the damper is arranged, and the damper is connected with the photovoltaic module fixing device and the supporting piece, so that when the photovoltaic module fixing device performs pitching motion, the photovoltaic module fixing device is held down by the damper and cannot exceed a preset position range. The method has positive effects and significance for improving the consistency of planes of photovoltaic components of a photovoltaic tracking system formed by a plurality of photovoltaic tracking units, reducing the occurrence of wave planes and protecting the whole mechanical structure of the photovoltaic tracking units. The damper also has the damping effect, and reduces the shock of vibration as much as possible when the photovoltaic module fixing device drives the photovoltaic module to move at the pitching angle of the adjusting position.

In one embodiment, referring to fig. 3, the damper includes a damper body 141, damper connecting portions 142 are provided at both ends of the damper body 141, respectively, and a circular ring 143 is provided at the top end of each damper connecting portion 142.

In one embodiment, referring to fig. 4, the first and second connection bases 151 and 152 are further included; the first connection base 151 is used to connect the first end of the damper 14 and the support 44; the second connection base 152 is used to connect the second end of the damper 14 to the photovoltaic fixture 12.

In one embodiment, the first connection base 151 and the second connection base 152 may have the same structure.

Referring to fig. 5, the first connection base 151 may further include: a first connection portion 1511 and a second connection portion 1512; the first connection portion 1511 and the second connection portion 1512 are perpendicular; the first connection portion 1511 is used for connecting the supporting member 11; the second connection portion 1512 is configured to connect to the first ring 143 of the first end of the damper 14.

Specifically, the first connection portion 1511 is provided with a plurality of through holes 15111; the through hole 15111 is fixedly connected with the supporting member 11. When installed, the through holes 15111 are aligned with the through holes in the support member and bolted.

Preferably, the number of the through holes 15111 is two, and the virtual connection lines of the two through holes 15111 are located in the vertical direction up and down when installed at a predetermined distance.

In one embodiment, the second connection portion 1512 is provided with a connection piece 1513; the connection piece 1513 is for connecting to the first ring 143 of the first end of the damper 14.

Illustratively, the connector 1513 is a U-shaped structure; the connection 1513 includes: two straight portions 15131 and a middle curved portion 15132, which are disposed opposite to each other, are provided with corresponding through holes 15133 in each straight portion 15131 for connection with the first ring 143 of the first end of the damper 14.

During installation, the U-shaped opening of the connecting piece 153 faces upwards, the virtual connecting line of the two through holes 15133 is in the horizontal direction, the virtual connecting line of the two through holes 15111 is in the vertical direction, the first circular ring 143 stretches into the U-shaped opening, the two through holes 15133 are aligned with the first circular ring 143, the bolts are connected, the threaded rods of the bolts sequentially penetrate through the first through holes 15133, the first circular ring 143 and the second through holes 15133, and the end parts of the threaded rods are locked by nuts to realize fixation. The structure of this kind of connection, simple to operate, firm in connection has improved the efficiency of installation and the effect of installation.

Referring to fig. 6, the connector may take another form, and in some embodiments, the top end of the connector 1513 is provided with a connecting ring 15134, and the connecting ring 15134 is configured to connect with the first ring 143 of the first end of the damper 14. The bottom of the connection member 1513 may be fixed to the second connection portion 1512, wherein the fixing may be performed by welding.

When the damper is mounted, the axis direction of the central hole of the connecting member ring 15134 is horizontal, and the first ring 143 of the damper is aligned with the central hole of the ring 15134 and is connected by bolts.

In order to improve the corrosion resistance of the first and second connection bases, in one embodiment, the first and second connection bases are provided with a galvanization layer. The thickness of the zinc coating may be between 50um and 100 um.

Galvanized layers may also be provided on purlins 121 and purlin diagonal braces 122 described above.

In a second aspect, the application further provides a photovoltaic tracking system, which comprises the photovoltaic tracking units, wherein the photovoltaic tracking units are sequentially connected end to end.

Wherein, every photovoltaic tracking unit and adjacent photovoltaic tracking unit can be through the girder, can adopt fixed connection's mode to link together two adjacent girders, for example, can adopt the welding, or adopt bolted connection's mode, when bolted connection, in an embodiment, can self-control purpose-made connecting sleeve, connecting sleeve's size can match with the size of girder, for example, the girder is cylindrical, then connecting sleeve can be hollow cylinder long tube, for example, the girder surface is the cube, then connecting sleeve can be hollow square long tube.

When the connecting sleeve is in a cylindrical shape, the inner diameter of the connecting sleeve and the outer diameter of the main beam can be in clearance fit or interference fit, and when the connecting sleeve is installed, the connecting sleeve can be heated and then sleeved on the main beam to realize the connecting function, but the method is not beneficial to disassembly.

Considering convenient disassembly, through holes can be respectively formed in the connecting sleeve and the position close to the end parts of the main beams, the end parts of the two main beams penetrate into the connecting sleeve for a certain distance, and the connecting sleeve and the two main beams are fixedly connected through bolts.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the utility model to the particular embodiments described, but is capable of modification and variation in light of the above teachings. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A photovoltaic tracking unit, comprising: the photovoltaic module comprises a support (11), a photovoltaic module fixing device (12), a photovoltaic module (13) and a damper (14); wherein the photovoltaic module 13 is arranged on the photovoltaic module fixing device (12); a first end of the damper (14) is connected to the support (11); the second end is connected with the photovoltaic module (13) fixing device; for limiting the pitch range of motion of the photovoltaic module fixture (12);

the damper (13) includes: damper bodies (141), damper connecting parts (142) are respectively arranged at two ends of the damper bodies (141), and a circular ring (143) is arranged at the top end of each damper connecting part (142);

also comprises a first connection base (151) and a second connection base (152);

the first connection base (151) is used for connecting the first end of the damper (14) and the supporting piece (44);

the second connection base (152) is for connecting a second end of the damper (14) and the photovoltaic fixture (12).

2. The photovoltaic tracking unit according to claim 1, characterized in that said first connection base (151) comprises: a first connection portion (1511) and a second connection portion (1512);

the first connection portion (1511) and the second connection portion (1512) are perpendicular;

-said first connection portion (1511) for connecting said support (11);

the second connecting portion (1512) is used for connecting a first circular ring (143) of the first end of the damper (14).

3. The photovoltaic tracking unit according to claim 2, characterized in that the first connection portion (1511) is provided with a number of through holes (15111); the through hole (15111) is used for being fixedly connected with the supporting piece (11).

4. A photovoltaic tracking unit according to claim 3, characterized in that the second connection (1512) is provided with a connection (1513); the connecting piece (1513) is used for connecting with the first circular ring 143 of the first end of the damper (14).

5. The photovoltaic tracking unit according to claim 4, characterized in that the top end of the connection piece (1513) is provided with a connection ring (15134) for connection with a first ring (143) of the first end of the damper (14); the bottom of the connecting piece (1513) is fixed on the second connecting part (1512);

when the connecting piece is installed, the first circular ring (143) is aligned with the top circular ring of the connecting piece (153) and is connected through bolts.

6. The photovoltaic tracking unit of claim 4, characterized in that the connection (1513) is a U-shaped structure; the connection piece (1513) comprises: two straight line parts (15131) and a middle bending part (15132) which are oppositely arranged, wherein each straight line part (15131) is respectively provided with a corresponding through hole (15133) for being connected with a first circular ring (143) at the first end of the damper (14);

when the connecting piece is installed, the first circular ring (143) stretches into the U-shaped opening of the connecting piece (153), and through holes (15133) in the two straight line parts (15131) are aligned with the first circular ring and are connected through bolts.

7. The photovoltaic tracking unit of claim 1, characterized in that the photovoltaic module fixture (12) comprises: purlin (121), purlin diagonal bracing (122) and girder (123);

the purline (121) is fixedly connected with the photovoltaic module;

two ends of the purline (131) are respectively provided with a purline diagonal brace (122), and one end of the purline diagonal brace (122) is fixedly connected with one end of the purline (121);

the other end of the purline diagonal brace (122) is fixedly connected with the main girder (123);

a second end of the damper (14) is connected to the purlin bracing (122).

8. The photovoltaic tracking unit of claim 1 wherein the first connection base and the second connection base are provided with a galvanization layer.