CN203241827U - Solar power generation double-shaft tracking device - Google Patents

Abstract

The utility model discloses a solar power generation double-shaft tracking device. The device comprises light acquisition assembly supports, light intensity and direction signal collectors, longitudinal-shaft variable-angle eccentric rotation arms, horizontal-shaft centrifugal rotation arms, angle correction rings and a tracking control system. Each light acquisition assembly support is arranged on one main column. Each light intensity and direction signal collector is arranged on the upper end of the corresponding light acquisition assembly support. The top of each main column is connected with the corresponding light acquisition assembly support through one corresponding longitudinal-shaft variable-angle eccentric rotation arm and one corresponding horizontal-shaft centrifugal rotation arm. The central part of each main column is fixed on a point where a longitudinal-shaft square-structure steel pipe and a horizontal-shaft square-structure steel pipe intersect. The bottom of each main column is fixed on the ground through a round flange plate. The tracking control system which combines light sensor tracking and time tracking respectively drives a longitudinal-shaft motor and a horizontal-shaft motor to run according to direction signals.

Description

A dual-axis tracking device for solar power generation

technical field

The utility model relates to a solar power generation dual-axis tracking device, in particular to a solar photovoltaic dual-axis tracking platform. the

Background technique

As a clean and non-polluting energy source, solar energy has very broad prospects for development and has become a green energy source that countries are competing to develop. However, solar energy has problems such as low density, intermittent, and changing illumination direction and intensity with time. Most of the traditional solar panels are installed in a fixed way, that is, the panels are fixed at a certain position and do not move with the change of the sun's position, which seriously affects Photoelectric conversion efficiency. the

The solar automatic tracking system can increase the solar energy received by the photovoltaic module, increase the daily power and annual output power, but it is more costly and complex than the fixed system. In current practical applications, solar tracking systems include single-axis systems, dual-axis mechanical tracking systems, and quasi-dual-axis systems. The single-axis system can only track the sun from east to west; while the dual-axis system tracks the sun from east to west, the inclination angle of the solar panel also changes with the height of the sun, so as to accurately track the sun's position; but the existing dual-axis tracking System, it is difficult to make a linkage scheme (multiple photovoltaic arrays use a set of power drive and control system), and the cost is high, the structure is complex, and maintenance is difficult. Although the quasi-dual-axis tracking system has the advantages of low price of single-axis and precise advantages of dual-axis, and can be made into a linkage scheme, its tracking angle is narrower than that of dual-axis tracking, which reduces efficiency. The existing sun tracking system has problems such as product system reliability not meeting requirements, large tracking error, and high cost. the

Contents of the invention

The utility model solves the problems of low photoelectric conversion efficiency of the fixed system, narrow quasi-double-axis tracking range angle, and high cost and complexity of the double-axis tracking system. The utility model discloses a concentric matrix type linkage type solar power generation dual-axis tracking device. The upper end surface of the light collection component support is provided with a light intensity and direction signal collector, and the tracking control system is a combination of optical sensor tracking and time tracking. Use the sensor to track on sunny days, and use the timer to track on cloudy days (dark clouds block the sun), and the two tracking methods can be switched automatically according to the weather conditions. While improving the utilization rate of solar energy, the system works more stably. The top of the main column is connected to the support of the light collection component through the eccentric rotating arm with variable angle on the longitudinal axis, and the centrifugal rotating arm on the horizontal axis is connected to the bracket of the light collection component. On the circular flange on the ground, the vertical and horizontal square structural steel pipes are divided into two types: vertical and horizontal. The end is fixed on the ground through a flange, the vertical axis is variable-angle eccentric rotating arm, and the horizontal axis is centrifugally rotating arm. Both ends of the rotating arm are equipped with pulleys connected to the vertical axis square structure steel pipe and the horizontal axis square structure steel pipe along the angle correction ring. After being connected to the transmission chain, the transmission chain is respectively connected to the end transmission gear of the vertical and horizontal square structural steel pipes to form a closed-loop transmission mechanism, so that the light collection component bracket is rotated centrifugally with the main column, the vertical axis variable-angle eccentric rotating arm, and the horizontal axis Arm swivel arm, angle correction ring, and steel wire ropes form a cable-stayed anchoring method with the main column as the center and steel wire ropes on four sides to strengthen the ability of the tracking platform to resist wind and severe weather. the

The dual-axis tracking device for solar power generation of the present invention is characterized in that the device includes a light collection component bracket, a light intensity and direction signal collector, a longitudinal axis variable-angle eccentric rotating arm, a horizontal axis centrifugal rotating arm rotating arm, and angle correction Ring, vertical and horizontal square structural steel pipes, and a tracking control system; the light collection component bracket is installed on the main column, and the upper end of the light collection component bracket is provided with a light intensity and direction signal collector; the top of the main column changes the angle through the vertical axis The eccentric rotating arm and the horizontal axis centrifugal rotating arm are connected with the light collection component bracket. The middle part of the main column is fixed on the intersection of the vertical axis square structural steel pipe and the horizontal axis square structural steel pipe. The bottom end of the main column is fixed on the ground through a flange ; The tracking control system is a combination of light sensor tracking and time tracking, which drives the vertical axis motor and the horizontal axis motor respectively according to the direction signal. The two ends of the vertical axis variable angle eccentric rotating arm and the horizontal axis centrifugal rotating arm are provided with steel wire ropes connected to the pulleys of the vertical axis square structure steel pipe and the horizontal axis square structure steel pipe along the angle correction ring, and then connected to the transmission chain, the transmission chain They are respectively connected to the transmission gears at the ends of the vertical and horizontal square structural steel pipes to form a closed-loop transmission mechanism. The vertical axis transmission gear and the horizontal axis transmission gear are installed on the vertical axis transmission shaft and the horizontal axis transmission shaft respectively, the vertical axis transmission shaft and the horizontal axis transmission shaft are connected to the vertical axis and the horizontal axis reducer, the vertical axis transmission chain and The horizontal axis transmission chain and the steel wire rope pull the light collection component bracket to move along the direction of the sun centered on the intersection point of the straight line where the angle-changing eccentric rotating arm and the horizontal axis centrifugal rotating arm pass through the main column. The vertical axis motor and the horizontal axis motor are respectively connected to the vertical axis reducer and the horizontal axis reducer, as well as the vertical axis transmission gear and the horizontal axis transmission gear to control the tracking device to operate according to the direction of the sun. An angle correction ring is provided at the lower end of the vertical-axis variable-angle eccentric rotating arm and the horizontal-axis centrifugal rotating arm to correct the wire rope distance error caused by the different azimuth angle and elevation angle when the light collection component bracket rotates. Bearings are provided at both ends of the longitudinal-axis variable-angle eccentric rotating arm, which can slide along the frame of the light collection component bracket to correct the angle difference between the azimuth and elevation angles and the vertical-axis variable-angle eccentric rotating arm when the light collection component bracket rotates. the

The key of the utility model lies in the use of the vertical axis variable angle eccentric rotating arm, the horizontal axis centrifugal rotating arm rotating arm, the angle correction ring and the light collection component support that operates with it as the fulcrum. On the steel wire rope/pulley system, the light collection component support The eccentric rotating arm can only change the angle along the longitudinal axis, and the centrifugal rotating arm of the horizontal axis can move vertically and laterally, which overcomes the inability to accurately control the east and west directions of other tracking platforms that use similar joint bearings and return reducers as the fulcrum of rotation. The shortcomings of swinging left and right, poor wind resistance, and easy damage, while the vertical and horizontal rectangular square tube array can strengthen the structural strength, can also change the size according to the terrain and installation environment, expand the scope of use, use the principle of lever/pulley, and use the wire rope to concurrently perform traction With the function of anchoring and anchoring, the tracking device has the advantages of simple structure, small transmission resistance, good economy, low power consumption, easy installation and maintenance, installation range not limited by terrain and installation environment, high structural strength, and strong wind resistance. the

Beneficial effects of the invention:

Low cost: The transmission mechanism is composed of levers, pulleys, and wire ropes, which saves the mechanical transmission components such as electric push rods, worm gears, rotary reducers, and circular turntables used in traditional tracking platforms. Most of the main parts use standard parts, which greatly reduces production and processing costs. the

Low energy consumption: use the lever/pulley principle to minimize the transmission resistance so that the system can minimize its own power consumption. the

Modular design: According to the terrain and environment of the installation site, local photovoltaic modules can be added or reduced to change the geometric shape, expand the application range of photovoltaic power plants and improve land use efficiency, and its rectangular grid array steel structure can increase the height and change the size of the array The combination of power generation industry and agriculture and animal husbandry can be easily realized. 

Structurally stable: The support of the collection component adopts the vertical axis variable angle eccentric rotating arm, the horizontal axis centrifugal rotating arm and the angle correction ring, the steel wire rope and the vertical and horizontal truss steel structure to form a cable-stayed and anchored method with the main column as the center and four sides of the steel wire rope to enhance the wind resistance and safety of the system. Ability to resist adverse weather effects. the

Easy installation and maintenance: the whole system consists of wire ropes, pulleys, bearings, chains, gears, motors, reducers, longitudinal axis variable-angle eccentric rotating arms, horizontal axis centrifugal rotating arms, angle correction rings, light collector brackets, flanges and vertical and horizontal The square steel pipe consists of three parts, so its installation, commissioning, operation and maintenance are simple and convenient. the

Convenient transportation: the main structure is a regular rectangle, which is convenient for transportation and reduces transportation costs. the

Long operating life and high recycling rate: all components are hot-dip galvanized steel structure, high strength, corrosion resistance, high recycling rate of equipment. the

No damage to the land: the system is composed of a rectangular steel structure array and a foundation flange, without cement components, and has no damage to the land. the

Description of drawings

Fig. 1 is the schematic diagram of the dual-axis tracking device for solar power generation of the present utility model

Fig. 2 is a cross-sectional structure diagram of the longitudinal axis of the solar power generation dual-axis tracking device of the present utility model

Fig. 3 is a cross-sectional structure diagram of the horizontal axis of the solar power generation dual-axis tracking device of the present invention

Fig. 4 is the top view of the utility model

in:

1. Bearing 2. Horizontal axis centrifugal rotating arm 3. Horizontal angle correction ring 4. Main column pulley 5. Steel wire rope 6. Square structure steel pipe pulley 7. Main column 8. Flange 9. Horizontal axis transmission chain 10. Horizontal axis square Structural steel pipe 11, horizontal axis motor 12, horizontal axis reducer 13, horizontal axis transmission gear 14, light intensity and direction sensor controller 15, light collection component bracket 16, tension adjustment screw 17, tension adjustment nut 18, bar Form tension adjustment slide hole 19, horizontal axis transmission shaft 20, vertical axis variable angle eccentric rotating arm 21, vertical axis angle correction ring 22, vertical axis transmission chain 23, vertical axis transmission gear 24, vertical axis transmission shaft 25, vertical axis Motor 26, vertical axis reducer 27, vertical axis square structure steel pipe 28, angle correction bearing

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is further described. the

The light intensity and direction sensing controller 14 at the upper end of the light collection component support 15 forms two direction signals of east-west and north-south (vertical axis, horizontal axis) according to the sun's moving track, and the tracking control system drives the vertical axis motor 25 and the horizontal axis respectively according to the direction signals. The shaft motor 11 is running, and the top of the main column 7 is connected to the light collection component bracket 15 through the vertical axis variable-angle eccentric rotating arm 20 and the horizontal axis centrifugal rotating arm 2. At the intersection point of the steel pipes 10 of the square-shaft structure, the bottom end of the main column 7 is fixed on the ground through a flange 8; steel wire ropes 5 are arranged on the two ends of the vertical axis variable-angle eccentric rotating arm 20 and the horizontal axis centrifugal rotating arm 2. Along the vertical axis angle correction ring 21, the transverse angle correction ring 3 is connected to the square structure steel pipe pulley 6 of the vertical axis square structure steel pipe 27 and the horizontal axis square structure steel pipe 10 through the main column pulley 4, and then connected to the vertical axis transmission chain 22 and the horizontal axis. On the axis transmission chain 9, the vertical axis transmission chain 22 and the horizontal axis transmission chain 9 are respectively connected to the vertical axis transmission gear 23 and the horizontal axis transmission gear 13, and the vertical axis transmission gear 23 and the horizontal axis transmission gear 13 are installed on the vertical axis transmission shaft 24 and the horizontal axis transmission shaft 19, the vertical axis transmission shaft 24 and the horizontal axis transmission shaft 19 are connected to the vertical axis reducer 26 and the horizontal axis reducer 12 through the vertical axis square structural steel pipe 27 and the horizontal axis square structural steel pipe 10, forming Closed-loop transmission mechanism. The vertical axis transmission gear 23 and the horizontal axis transmission gear 13 are installed on the vertical axis transmission shaft 24 and the horizontal axis transmission shaft 19 respectively, and the vertical axis transmission shaft 24 and the horizontal axis transmission shaft 19 are connected to the vertical axis speed reducer 26 and the horizontal axis On the speed reducer 12, the vertical axis transmission chain 22 and the horizontal axis transmission chain 9 together with the wire rope 5 pull the light collection component bracket 15 to intersect the straight line where the vertical axis variable angle eccentric rotary arm 20 and the horizontal axis centrifugal rotary arm 2 pass through the main column 7 The point is the center and moves with the direction of the sun. The vertical axis motor 25 and the horizontal axis motor 11 are respectively connected to the vertical axis reducer 26 and the horizontal axis reducer 12 to control the tracking device to run according to the direction of the sun. When the sun sets, the controller will control the tracking device to return to the initial position. the

Claims (7)

1. A dual-axis tracking device for solar power generation, characterized in that the device includes a light collection component support, a light intensity and direction signal collector, a vertical axis variable-angle eccentric rotating arm, a horizontal axis centrifugal rotating arm, and an angle correction ring, and a tracking control system; the light collection component support is installed on the main column, and the light intensity and direction signal collector is arranged at the upper end of the light collection component support; The rotating arm is connected with the bracket of the light collection component, the middle part of the main column is fixed on the intersection of the vertical axis square structural steel pipe and the horizontal axis square structural steel pipe, and the bottom end of the main column is fixed on the ground flange; the tracking control system It is a combination of optical sensor tracking and time tracking, which drives the vertical axis motor and the horizontal axis motor respectively according to the direction signal. 2. The dual-axis tracking device for solar power generation according to claim 1, characterized in that the two ends of the vertical axis variable-angle eccentric rotating arm and the horizontal axis centrifugal rotating arm are connected to the vertical axis square structural steel pipe by steel wires along the angle correction ring 1. The pulley of the square structural steel pipe on the horizontal axis is connected to the vertical axis transmission chain and the horizontal axis transmission chain, and the transmission chain is respectively connected to the vertical axis transmission gear and the horizontal axis transmission gear to form a closed-loop transmission mechanism. 3. The solar power generation dual-axis tracking device according to claim 2, wherein the vertical axis transmission gear and the horizontal axis transmission gear are installed on the vertical axis reducer and the horizontal axis reducer respectively, and the vertical axis transmission chain and the horizontal axis The transmission chain and the wire rope pull the light collection component bracket to rotate with the direction of the sun's movement centered on the point where the angle-variable eccentric rotating arm and the horizontal axis centrifugal rotating arm pass through the main column. 4. The dual-axis tracking device for solar power generation according to claim 1, characterized in that the vertical axis variable-angle eccentric rotating arm, the two ends of the horizontal axis centrifugal rotating arm are provided with steel wire ropes connected to the vertical axis square structural steel pipe along the angle correction ring And on the pulley of the horizontal axis square structural steel pipe. 5. The solar power generation dual-axis tracking device according to claim 1, characterized in that the vertical axis variable-angle eccentric rotating arm and the lower end of the horizontal axis centrifugal rotating arm are provided with an angle correction ring to correct the azimuth and angle when the light collection component bracket rotates. The wire rope distance error caused by different height angles. 6. The solar power generation dual-axis photoelectric power generation tracking device according to claim 1, characterized in that bearings are arranged at both ends of the eccentric rotating arm with variable longitudinal axis, which can slide along the frame of the light collection component bracket to correct the rotation of the light collection component bracket When the azimuth angle and altitude angle are different, the angle difference produced by the vertical axis variable angle eccentric rotating arm is different. 7. The solar power generation dual-axis tracking device according to claim 3, characterized in that the vertical axis motor and the horizontal axis motor are respectively connected to the vertical axis reducer and the horizontal axis reducer as well as the vertical axis transmission gear and the horizontal axis transmission gear to control The tracking device runs in the direction of the sun.

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