CN212163236U

CN212163236U - Self-powered flat single-shaft photovoltaic tracking system

Info

Publication number: CN212163236U
Application number: CN202020676124.2U
Authority: CN
Inventors: 姜庆堂; 周晓峰; 安明博
Original assignee: Shanghai Hanxiang New Energy Technology Co ltd
Current assignee: Shanghai Hanxiang New Energy Technology Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-12-15
Anticipated expiration: 2030-04-28

Abstract

The utility model belongs to the technical field of solar photovoltaic equipment, concretely relates to self-powered flat unipolar photovoltaic tracking system, including driver, hydraulic damper, photovoltaic module and the support that is used for installing photovoltaic module, the support includes stand and girder, and hydraulic damper movable fit respectively in stand and girder, and several stands are the distribution of arranging in a straight line, are fixed with the bearing frame on the stand, and the cladding has upper bearing and lower bearing in the bearing frame, and girder rotation fit in upper bearing and lower bearing; the driver drives the main beam to rotate so as to rotate the photovoltaic module; the driver drives the circular pipe main beam to rotate so as to enable the photovoltaic module to rotate, and the solar panel supplies power to the driver; the system adopts single-row independent mode, strong adaptability, adopts LoRa wireless transmission technology and self-powered mode, and reduce cost, the pipe girder connected mode is firm, and system stability can be good.

Description

Self-powered flat single-shaft photovoltaic tracking system

Technical Field

The utility model belongs to the technical field of solar photovoltaic equipment, concretely relates to flat unipolar photovoltaic tracking system of self-power.

Background

The current photovoltaic tracking system mostly adopts a multi-row linkage system, the multi-row linkage system is pushed by connecting rods between rows, so that operation and maintenance vehicles cannot pass freely, the requirement on the smoothness of a field is high, and the adaptability to irregular fields is poor. The overall structure is easy to vibrate and has poor stability. Therefore, there is a need for improvement based on this.

For example, patent document CN208890728U discloses a self-powered linkage flat single-shaft photovoltaic system, which includes several rows of photovoltaic supports having photovoltaic modules, a push rod for pushing the rows of photovoltaic supports to rotate, a driver for driving the push rod to move, and a power supply device for supplying power to the driver, wherein the power supply device includes a storage battery, one end of the storage battery is connected to the driver, and the other end of the storage battery is connected to at least one photovoltaic module. However, the holder of this patent document has poor stability, and cannot ensure the reliability of the system.

Patent document CN209642619U discloses a flat single-axis linkage type photovoltaic tracking system, which includes: the photovoltaic support comprises a plurality of groups, each group of photovoltaic supports comprises purlins connected with photovoltaic plates, vertical columns supported on a slope surface or the ground, connecting pieces and swing rods arranged on the connecting pieces and capable of moving synchronously with the purlins, the rotating axis of each connecting piece extends along the horizontal direction, each group of photovoltaic supports is connected with one photovoltaic plate, and a plurality of photovoltaic plates are distributed in rows or columns; the photovoltaic angle adjuster can adjust the swing rods of the multiple groups of photovoltaic supports to swing synchronously, and comprises linkage rods and a driving piece, wherein the linkage rods are used for transversely connecting two adjacent swing rods of the multiple groups of photovoltaic supports in the same row or the same column, and the driving piece is used for driving any one linkage rod to transversely move along the length direction of the linkage rod. However, the structural connection of this patent document is liable to generate vibration and is poor in stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a self-powered flat unipolar photovoltaic tracking system in order to solve the defect problem that prior art exists.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:

a self-powered flat single-shaft photovoltaic tracking system comprises a driver, a hydraulic damper, a photovoltaic module and a support for mounting the photovoltaic module, wherein the support comprises upright columns and a main beam, the hydraulic damper is respectively and movably matched with the upright columns and the main beam, a plurality of upright columns are distributed in a linear arrangement, bearing seats are fixed on the upright columns, upper bearings and lower bearings are coated in the bearing seats, and the main beam is rotationally matched with the upper bearings and the lower bearings; the driver drives the main beam to rotate so as to rotate the photovoltaic module.

As a preferred scheme, one end of the hydraulic damper is rotationally matched with the first connecting piece, the first connecting piece is fixedly arranged on the upright post, the other end of the hydraulic damper is rotationally matched with the second connecting piece, and the second connecting piece is fixed on the main beam through a hoop; to reduce the amplitude of vibration of the overall structure.

According to the preferable scheme, the main beam is formed by sequentially splicing a plurality of round tubes, one end of one round tube in two adjacent round tubes is provided with a necking down, and the necking down is in splicing fit with the other round tube and is fixed through a bolt so as to improve the connection stability of the main beam.

Preferably, the main beam is provided with a mounting hole, and the mounting hole is used for fixing the purline assembly through a butt bolt.

According to the preferable scheme, the purline assembly comprises a purline and a cushion block, the purline is connected with the cushion block through bolts, the cushion block is provided with a groove, and the groove is matched with the main beam.

As the preferred scheme, the stand is H type, and the top installation stand seat of stand, stand seat fixed connection bearing frame install upper bearing and lower bearing in the bearing frame, upper bearing and lower bearing opening set up relatively to cooperate with the girder respectively.

Preferably, the driver comprises a rotary speed reducer and a motor, the driver is fixed on the upright post through a rotary support, an output shaft of the motor is connected with the rotary speed reducer, and a rotating shaft of the rotary speed reducer is fixedly connected to the main beam; the motor drives the rotary speed reducer to move so as to enable the main beam to rotate.

Preferably, the main beam is fixedly provided with a solar panel, the solar panel and the driver are arranged oppositely, and the solar panel supplies power to the driver.

Preferably, the motor is connected with the controller through a cable, the inclination angle sensor and the LoRa wireless communication module are integrated in the controller, and an antenna is arranged outside the controller.

Preferably, the controller is fixed on the main beam through a hoop.

Compared with the prior art, the utility model, beneficial effect is:

1. the utility model provides a flat unipolar photovoltaic tracking system of self-power adopts the independent mode of single rank, can realize that accessible, the no risk of power station fortune dimension vehicle is current, and is strong to anomalous place adaptability.

2. The system adopts loRa wireless transmission technology and self-powered mode, reduces the on-the-spot cable trench excavation volume, saves the cable quantity, reduces the construction cost.

3. The girder adopts the pipe, and the cross-section torsional properties is strong, and stability is good, and is few to sheltering from at the two-sided subassembly back, and the connection between girder and the girder adopts pipe necking down and bolt combination mode, save material and safe and reliable.

4. Through setting up hydraulic damper, improve the vibration characteristic of structure, reduce vibration range, improve the stability ability of system.

Drawings

Fig. 1 is a schematic diagram of a stand column single arrangement of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 2 is a schematic diagram of a central location structure of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 3 is a schematic diagram of a driver connection of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 4 is another view angle connection schematic diagram of the driver of the self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 5 is a schematic diagram of a controller connection of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 6 is a schematic diagram of a purlin assembly of a self-powered flat single-axis photovoltaic tracking system in accordance with embodiment 1 of the present invention;

fig. 7 is a schematic diagram of structural connection between a purlin and a pad of a self-powered flat uniaxial photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 8 is a schematic diagram of a connection between a purlin assembly and a main beam of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 9 is a schematic structural connection diagram of a main beam of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 10 is a schematic connection diagram of a bearing portion structure of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 11 is another schematic view of a bearing portion structural connection of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 12 is an enlarged view of a portion of a bearing of a self-powered flat single-axis photovoltaic tracking system in accordance with embodiment 1 of the present invention;

fig. 13 is a schematic diagram of a column of a self-powered flat single-axis photovoltaic tracking system in accordance with embodiment 1 of the present invention;

fig. 14 is a schematic diagram of the hydraulic damper lower connection of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 15 is another schematic view of the lower connection of the hydraulic damper of a self-powered flat single-axis photovoltaic tracking system in accordance with embodiment 1 of the present invention;

fig. 16 is a schematic diagram of the connection of the upper part of the hydraulic damper of a self-powered flat single-axis photovoltaic tracking system according to embodiment 1 of the present invention;

fig. 17 is another schematic diagram of a purlin assembly of a self-powered flat single-axis photovoltaic tracking system in accordance with embodiment 2 of the present invention;

in the figure: the solar energy photovoltaic power generation system comprises a photovoltaic module 1, a driver 2, a motor 21, a rotary speed reducer 22, a support 3, a column 31, a rotary support 311, a column base 312, a bearing base 313, an upper bearing 314, a lower bearing 315, a first connecting piece 316, a second connecting piece 317, a main beam 32, a hydraulic damper 33, a hoop 34, a cushion block 35, a purlin 36, a solar panel 4 and a controller 5.

Detailed Description

The technical solution of the present invention is further described and illustrated by the following specific embodiments.

Example 1:

as shown in fig. 1 to 16, the present embodiment provides a self-powered flat single-shaft photovoltaic tracking system, which includes a driver 2, a hydraulic damper 33, a photovoltaic module 1, and a support 3 for mounting the photovoltaic module 1, wherein the support 3 includes an upright column 31 and a main beam 32, the hydraulic damper 33 is respectively movably fitted to the upright column 31 and the main beam 32, the upright columns 31 are distributed in a row, a bearing seat 313 is fixed on the upright column 31, an upper bearing 314 and a lower bearing 315 are wrapped in the bearing seat 313, and the main beam 32 is rotatably fitted to the upper bearing 314 and the lower bearing 315; the driver 2 drives the main beam 32 to rotate so as to rotate the photovoltaic module 1.

The self-powered flat single-axis photovoltaic tracking system is arranged independently in a single row and provided with 13 stand columns, the photovoltaic modules 1 adopt a 1P arrangement scheme, 90 photovoltaic modules 1 can be mounted in the single row in the largest mode and are symmetrically distributed on two sides of the stand columns 31, the largest tracking angle is +/-60 degrees, and the photovoltaic tracking system is compatible with conventional commercial modules. The bolt connection is adopted on site, the installation is convenient, no special installation tool is needed, partial structural components are preassembled in a factory, and the site cutting and welding are not needed. The driver 2 is arranged on the top of a vertical column 31 in the center of the system, and the left and right main beams 32 are connected to a rotating shaft of the driver 2 to drive the whole system to rotate. The actual arrangement of the system is influenced by a plurality of factors such as the specification of the photovoltaic module 1, the performance of the inverter, the site condition and the like, and is slightly different in practice. By adopting a single-row independent mode, barrier-free and risk-free passing of the operation and maintenance vehicles of the power station can be realized, and the adaptability to irregular sites is strong.

The hydraulic damper 33 is installed on the upright column 31, one end of the hydraulic damper 33 is movably connected to the first connecting piece 316, the other end of the hydraulic damper 33 is movably connected to the second connecting piece 317, and the first connecting piece 316 is fixedly installed on the upright column 31. First connecting piece 316 is whole through bolted connection in the mill, and hydraulic damper 33 is through round pin hub connection 316 on the first connecting piece, and first connecting piece 316 is through bolted connection to stand 31 on, because stand 31 is the symmetric cross-section, for preventing the installation misloading direction and lead to the unable installation of hydraulic damper 33, the slotted hole has all been seted up on two flange boards of stand 31 to the adjustment demand of abundant adaptation stand high deviation.

The hydraulic damper 33 is connected to the second connecting member 317 through a pin, the second connecting member 317 is fixed to the main beam through a hoop, and the second connecting member 317 is connected into a whole through bolts in a factory. When the system is operating normally, the hydraulic damper 33 outputs little resistance, thereby reducing the burden on the actuator. When the system is impacted by strong wind, the hydraulic damper 33 can output larger resistance, thereby reducing the amplitude of the structure and ensuring the stability of the system.

The driver 2 comprises a rotary speed reducer 22 and a motor 21, the driver 2 is fixed on the upright column 31 through a rotary support 311, and the motor 21 drives the rotary speed reducer 22 to move so as to enable the main beam 32 to rotate. The connecting node has the function of adjusting the installation deviation. The left and right main beams 32 are connected to the rotating shaft of the rotary speed reducer 22 through bolts arranged along the circumference in an equal distribution manner, and the motor 21 drives the rotary speed reducer 22, so that the whole system is driven to operate, and the purpose of tracking the sun is achieved. The solar panel 4 is mounted on the main beam 32 and is disposed opposite the motor 21. The system is powered by the independent solar panel 4 installed in the center of the system, the design does not need to occupy extra space, the interference position of the driver 2 is avoided, and the overall appearance is coordinated. By adopting the self-powered scheme of the system, the excavation amount of the cable groove on the site can be greatly reduced, the cable consumption is saved, and the overall cost of the project is reduced.

The driver 2 is mounted on top of the column 31 and the main beam 32 is attached to the rotation axis of the driver 2, where a separate solar panel 4 is mounted to supply power to the whole system in order to make full use of the space on both sides of the driver 2 and avoid the interference position of the rear of the motor 21. The rotary speed reducer 22 is reliable in performance and has large torque output capacity, a self-locking mechanism in the rotary speed reducer can ensure that a system can bear large wind load, and a limiting block is arranged in the rotary speed reducer to provide extra protection.

The controller 5 is fixedly mounted on the main beam 32 through a hoop, can be mounted on the side surface of the main beam 32, and also can be mounted on the bottom surface of the main beam 32, and the mounting position is relatively free and can be adjusted according to actual needs. The rear portion of the controller 5 is connected to the motor 21 through a cable to control the operation of the motor 21. When the controller 5 is installed on the bottom surface of the photovoltaic module 1, direct sunlight can be avoided, the temperature inside the controller 5 is reduced, and the stability of the controller is improved. The controller 5 is installed on the main beam 32, so that the field installation and maintenance are convenient, the ground clearance exceeds 60 cm, and the influence of flood can be effectively avoided.

The controller 5 is internally integrated with an inclination angle sensor and a LoRa wireless communication module, and the controller 5 and the communicator, the communicator and the data acquisition unit are communicated by adopting a LoRa wireless communication technology. An antenna is arranged outside the controller 5, and a wireless communication function is realized in the communication network. The wireless communication transmission distance is far, the power consumption is low, the on-site cable groove excavation amount is greatly reduced, the cable consumption is saved, and the project construction cost is reduced. And the closed-loop control of the tracking angle is realized through the tilt angle sensor integrated in the controller 5. The controller 5 is provided with a standby power supply, and can ensure that the system can continuously run under the condition of insufficient light.

Install the purlin assembly between photovoltaic module 1 and the girder 32, the purlin assembly includes purlin 36 and cushion 35, and purlin 36 is bolted connection with cushion 35, and cushion 35 has the recess, and the recess cooperatees with girder 32. Slotted holes are formed in the upper flange of the purline 36 and used for adjusting the size deviation of the mounting hole position of the main beam 32 and the photovoltaic module.

The upright column 31 is an H-shaped section, hot rolling H-shaped steel or welding H-shaped steel can be selected, the manufacturing process is mature, and the quality is easy to guarantee. The upright column 31 is a bending member and mainly bears the load of the structure, such as dead weight, wind, snow and the like, so that the characteristics of strong bending resistance and good compression stability can be fully exerted, and the material consumption is saved. The top of the upright column 31 is provided with an upright column seat 312, the upright column seat 312 is fixedly connected with a bearing seat 313, and a bearing is arranged in the bearing seat 313. The main beam 32 is supported on the bearing through a bearing seat 313, and the connection point has the function of adjusting the installation deviation. The bearings comprise an upper bearing 314 and a lower bearing 315, wherein the upper bearing 314 and the lower bearing 315 are arranged opposite to each other in an opening and are respectively matched with the main beams 32. The bearing is made of high polymer materials, has extremely strong wear resistance and impact resistance, is low in friction coefficient, has good self-lubricating property, and is free of maintenance within the design service life. The bearing has a limiting function and does not need to be additionally limited independently. The whole set of bearing is located under the photovoltaic module 1, and no gap is required to be reserved in the bearing position when the photovoltaic module 1 is arranged, so that the length of the main beam 32 can be shortened, the material consumption is saved, and the design has greater adaptability to the installation deviation of the upright column 31 in the north-south direction.

The main beam 32 is formed by sequentially splicing a plurality of round tubes, one end of one round tube in two adjacent round tubes is provided with a necking down, the necking down is in splicing fit with the other round tube, and the two sections of main beams are firmly connected through bolts. The number of bolts can be adjusted according to the actual stress. Load is mainly transmitted through bolts, and a force transmission path is clear and reliable. The surface of the main beam 32 is provided with mounting holes, the purline assembly is connected onto the main beam 32 through a butt bolt, and the installation can be completed only by screwing one bolt during field installation. The spacer provides a mounting platform for the purlin to adapt to the characteristics of the round tube.

The girder 32 can be a seamless pipe or a straight seam welded pipe, the manufacturing process is mature, and the quality is easy to guarantee. The main beam 32 mainly bears the torque generated by wind load, and is complicated to bear along with the bending moment generated by the load of the structure dead weight, wind, snow and the like. Compared with a square pipe, the main beam 32 is adopted, under the action of the same sectional area and the same torque, the shearing stress and the circular pipe torsion angle of the main beam 32 are greatly reduced, the steel consumption can be greatly saved, the main beam 32 is not easy to warp and partially buckle, and the stability is better than that of the square pipe. To two-sided subassembly, girder 32 adopts the pipe, and two pipes are the cooperation of pegging graft to through the bolt fastening, with the stability ability that improves the girder connection, compare in square pipe girder, can reduce the back that girder 32 shelters from, improve the back generated energy of subassembly, increase economic benefits.

The main beam 32 integrates the installation deviation adjusting function with the connecting node of the upright column, the height, the verticality, the torsion direction, the east-west horizontal deviation and the north-south horizontal deviation of the main beam 32 can be adjusted, and the installation and adjustment on site are facilitated. The site adaptability is strong, and is not restricted to the slope of east-west direction, and the slope of north-south direction is the biggest allows 20%, greatly reduces the level and smooth work load in irregular place, saves the civil engineering cost for the engineering progress.

Example 2:

the present embodiment provides a self-powered flat single-axis photovoltaic tracking system, which is different from embodiment 1 in that:

as shown in fig. 17, in the present embodiment, the purlin assembly uses the pressing block assembly, and the purlin upper flange does not need to be perforated. The structure is simple.

Other specific configurations refer to example 1.

The above-mentioned is only the preferred embodiment of the present invention and the technical principle applied, and although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the scope of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A self-powered flat single-shaft photovoltaic tracking system is characterized by comprising a driver, a hydraulic damper, a photovoltaic module and a support for mounting the photovoltaic module, wherein the support comprises upright columns and a main beam, the hydraulic damper is respectively and movably matched with the upright columns and the main beam, a plurality of upright columns are distributed in a linear arrangement, bearing seats are fixed on the upright columns, upper bearings and lower bearings are coated in the bearing seats, and the main beam is rotationally matched with the upper bearings and the lower bearings; the driver drives the main beam to rotate so as to rotate the photovoltaic module.

2. A self-powered flat single-axis photovoltaic tracking system according to claim 1, wherein one end of the hydraulic damper is pivotally coupled to a first attachment member, the first attachment member is fixedly attached to the column, and the other end of the hydraulic damper is pivotally coupled to a second attachment member, the second attachment member is secured to the main beam by a hoop.

3. A self-powered flat uniaxial photovoltaic tracking system according to claim 1 or 2, wherein the main beam is formed by sequentially splicing a plurality of round tubes, one end of one round tube in two adjacent round tubes is provided with a necking down, and the necking down is in inserted fit with the other round tube and is fixed by a bolt.

4. A self-powered flat single-axis photovoltaic tracking system according to claim 3, wherein the main beams have mounting holes for securing purlin assemblies by means of cross-bolts.

5. A self-powered flat uniaxial photovoltaic tracking system according to claim 4, wherein the purlin assembly comprises purlins and spacers, the purlins and the spacers are bolted, and the spacers are provided with grooves which are matched with the main beams.

6. A self-powered flat uniaxial photovoltaic tracking system according to claim 1, wherein the upright is H-shaped, an upright base is installed on the top of the upright, the upright base is fixedly connected with a bearing base, an upper bearing and a lower bearing are installed in the bearing base, the upper bearing and the lower bearing are arranged opposite to each other in an opening and are respectively matched with the main beam.

7. A self-powered flat uniaxial photovoltaic tracking system according to claim 1, wherein the driver comprises a rotary speed reducer and a motor, the driver is fixed on the upright post through a rotary support, an output shaft of the motor is connected with the rotary speed reducer, and a rotating shaft of the rotary speed reducer is fixedly connected to the main beam; the motor drives the rotary speed reducer to move so as to enable the main beam to rotate.

8. A self-powered flat single-axis photovoltaic tracking system according to claim 7, wherein the main beam is fixedly mounted with a solar panel, the solar panel is disposed opposite the driver and supplies power to the driver.

9. The self-powered flat single-axis photovoltaic tracking system as claimed in claim 8, wherein the motor is connected to the controller through a cable, the tilt sensor and the LoRa wireless communication module are integrated in the controller, and an antenna is arranged outside the controller.

10. A self-powered flat single-axis photovoltaic tracking system according to claim 9, wherein the controller is secured to the main beam by a hoop.