CN103187461B - A kind of positioner of solar energy receiving system - Google Patents

Abstract

A positioning device for a solar energy receiving system, comprising a first hydraulic system: arranged between the turntable and the support frame, used to drive the support frame so that the side of the support frame and the turntable is rotatably connected to The axis rotates relative to the turntable; the first hydraulic system includes at least one hydraulic cylinder, and the ends of the fixed part and the moving part of the hydraulic cylinder are respectively hinged with the turntable and the support frame, or the moving part of the hydraulic system and the fixed part are respectively hinged with the turntable and the support frame; the second hydraulic system: used to drive the turnframe to rotate around the axis of the rotating member; the second hydraulic system includes at least two hydraulic cylinders, and the second The hydraulic system is also provided with a fixed seat fixedly installed on the ground or on the roof corresponding to each hydraulic cylinder, the first ends of the hydraulic cylinders are respectively hinged with the fixed seats, and the second ends of the hydraulic cylinders are respectively connected to the rotating parts through hinged connection.

Description

A positioning device for a solar receiving system

technical field

The invention relates to the field of new energy, and more specifically, relates to a positioning device for a solar energy receiving system.

Background technique

In a dish solar system or a photovoltaic solar system that performs two-dimensional tracking, the tracking accuracy of the positioning device to the sun's azimuth is an important factor that affects its work efficiency and energy utilization. For example, compared with ordinary fixed photovoltaic solar energy systems, if a solar photovoltaic panel with the same area can always be perpendicular to the sun's rays, its energy utilization efficiency will be greatly increased. For the dish solar system, the tracking accuracy of the positioning device to the position of the sun is the basic premise of its work.

In the current common solar energy system, there are usually two types of methods for driving the positioning device to track the sun (dish condenser or photovoltaic panel) in real time:

1) Using a motor with adjustable speed, the logic control system sends a signal to the motor to control the motor speed, so that the entire condenser or photovoltaic panel rotates according to the predetermined direction and speed, ensuring that at any time, the condenser or photovoltaic panel Can be perpendicular to the sun's rays, in this way to improve the power generation efficiency and total power generation of the system;

2) Use the hydraulic mechanism, and also use the logic control system to send electrical signals to the hydraulic drive system to control the stroke and action of the hydraulic system, so that the entire system can accurately align with the position of the sun at any time, and improve the tracking accuracy of the system to the sun , so as to achieve the purpose of improving the accuracy and efficiency of the system.

Using a motor-driven solar positioning device, in order to achieve high-precision tracking of sunlight, the motor drive needs to use a complex deceleration mechanism and high-power motor equipment, and at the same time, it will increase the power consumption of the motor under intermittent tracking conditions.

However, most of the existing positioning devices for solar receiving systems driven by hydraulic systems are controlled by two or more hydraulic cylinders. Different hydraulic cylinders are controlled by a logic program to make different actions to drive the solar light receiving plate to make corresponding actions according to the different positions of the sun. The disadvantages of this positioning device are:

1) The rotation range is limited. When the sun's rays are close to the level in the morning or evening, the driving force arm of the hydraulic device is limited, making it difficult for the solar receiving plate to move to the corresponding position, and the solar receiving plate can only be within a certain range track the sun;

2) Even if the position of the sun can be tracked, it is difficult to ensure that the received sunlight is incident on the sunlight receiving plate at a vertical angle, and the utilization rate of sunlight will be greatly reduced;

3) The mechanism of the motor-driven positioning device has low operating accuracy and poor stability;

4) The power of the motor is limited. For a solar system with a large size and weight, it is not realistic to use a motor drive.

Contents of the invention

One of the objectives of the present invention is to provide a positioning device for a solar energy receiving system to solve the defects of the positioning device in the solar energy system described in the prior art.

In order to solve the above-mentioned defects in the prior art, the present invention provides a positioning device for a solar energy receiving system, the solar system includes a positioning device and a sunlight receiving plate fixedly installed on the positioning device, and the positioning device includes:

Rotating part: it can rotate on its axis;

Rotary frame: fixedly connected with the rotating member, and rotates with the rotation of the rotating member, when the rotating frame rotates, it drives the sunlight receiving plate to rotate accordingly;

Supporting frame: one side of which is connected to the rotating frame in rotation, and the solar light receiving plate is fixedly installed on the supporting frame;

The first hydraulic system: arranged between the turntable and the support frame, used to drive the support frame to rotate relative to the turntable with the side where the support frame is rotatably connected to the turntable as an axis; The first hydraulic system includes at least one hydraulic cylinder, the ends of the fixed part and the action part of the hydraulic cylinder are respectively hinged with the turntable and the support frame, or the action part and the fixed part of the hydraulic system are respectively connected with the turnframe and the support frame. Support frame hinged;

The second hydraulic system: used to drive the turret to rotate around the axis of the rotating member; the second hydraulic system includes at least two hydraulic cylinders, and the second hydraulic system is also respectively corresponding to each hydraulic cylinder. On the fixed seat on the ground or on the roof, the first ends of the hydraulic cylinders are hinged to the fixed seats respectively, and the second ends are respectively connected to the rotating member in a hinged manner.

The distance between the side of the support frame that is rotatably connected to the turntable and the line connecting the hinge point where the hydraulic cylinder is hinged on the turnframe in the height direction is D, and the side of the support frame that is rotatably connected to the turnframe is The distance between the horizontal direction and the hinge point where the hydraulic cylinder is hinged on the turntable is H, and the hinge point where the hydraulic cylinder is hinged on the support frame is horizontally connected to the side of the support frame that is rotatably connected to the turntable. If the distance is L, the following relationship must be satisfied between the three: 1≤H/L≤15; 1≤H/D≤15.

Preferably, the first hydraulic system includes two hydraulic cylinders: the fourth hydraulic cylinder and the fifth hydraulic cylinder: and L:H:D=1:3:1;

The projections of the fourth hydraulic cylinder on the plane where the support frame is located and the plane where the turret is located form a plane with the fourth hydraulic cylinder, and the planes are respectively perpendicular to the plane where the support frame is located and the plane where the turret is located;

The projections of the fifth hydraulic cylinder on the plane where the support frame is located and the plane where the turret is located form a plane with the fifth hydraulic cylinder, and the planes are respectively perpendicular to the plane where the support frame is located and the plane where the turret is located.

Preferably, the positioning device further includes a circular guide rail fixedly installed on the ground or on the roof, the center of the guide rail coincides with the axis of the rotating member, and the turntable includes at least one slide mounted on the guide rail guide wheels on

The guide rail is a circular groove, and the guide wheel is slidably installed in the guide rail of the circular groove; or the guide rail is a circular platform, and the guide wheel is rollingly installed on the bottom of the turntable and can Then roll on the guide rail of the circular platform and drive the turntable to rotate.

Preferably, the positioning device includes a base fixedly installed on the ground or on the roof, the base is provided with a rotatably installed central shaft, and the rotating member is the central shaft;

Or the positioning device includes a base fixedly installed on the ground or on the roof, the base is provided with a fixedly installed central shaft, and the rotating member is a shaft sleeve rotatably mounted on the central shaft.

Preferably, the length of the fixed portion of the hydraulic cylinder of the second hydraulic system is b, the distance between the fixed seat corresponding to the hydraulic cylinder and the rotating member is c, and the length of the push rod connected to the hydraulic cylinder is a, a≤0.8b, and b≤c≤3b.

Preferably, the second hydraulic system includes two hydraulic cylinders: a first hydraulic cylinder and a second hydraulic cylinder, and a, b, and c satisfy the following relationship: a≤0.5b, 1.5b≤c≤2.5b.

Preferably, the rotating member is provided with a fixedly installed push rod, and the second ends of the hydraulic cylinders of the second hydraulic system are respectively hinged to the push rod; the push rod includes a first push rod and a second push rod. a push rod, the second ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively hinged to the first push rod and the second push rod;

Two fixed seats are fixedly installed on the ground or the roof: a first fixed seat and a second fixed seat, and the second ends of the first hydraulic cylinder and the second hydraulic cylinder are respectively connected to the first fixed seat and the second fixed seat. The two fixed seats are hinged.

Preferably, the second hydraulic system includes three hydraulic cylinders: a first hydraulic cylinder, a second hydraulic cylinder and a third hydraulic cylinder, 1.8b≤c≤2.8b.

Preferably, the rotating member is provided with a fixedly installed push rod, and the second ends of the hydraulic cylinders of the second hydraulic system are respectively hinged to the push rod; the push rod includes a first push rod, a second Push rods and third push rods, the three push rods are evenly distributed, and the angle between any two of them is degree, the first ends of the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are respectively connected to the The first push rod, the second push rod and the third push rod are hinged;

There are three fixed seats fixedly installed on the ground or on the roof: the first fixed seat, the second fixed seat and the third fixed seat, and the second ends of the first hydraulic cylinder, the second hydraulic cylinder and the third hydraulic cylinder are respectively It is hinged with the first fixed seat, the second fixed seat and the third fixed seat.

The positioning device of the solar receiving system of the present invention avoids the disadvantages of the existing so-called similar hydraulic systems by cooperating with two sets of hydraulic systems. When the existing drive mechanism runs to certain positions, the force arm of the hydraulic lever is extremely small, resulting in a very large hydraulic thrust, and a large hydraulic system needs to be configured in practical applications. However, in this patent, since the rotation of the support structure in the horizontal direction is separated from the rotation in the vertical direction, it can be designed separately, avoiding such limitations. Whether in the height direction or the horizontal direction, the rotation angle of the entire support structure and the solar system can meet the actual requirements of all-weather, and even the azimuth angle changes more than 180°.

Description of drawings

Fig. 1 is a schematic structural view of a solar energy system applied in Embodiment 1 of the present invention;

Fig. 2 shows the top view structure schematic diagram of the solar energy system applied in Embodiment 1 of the present invention when the sun just came out or the sun just went down and one of the hydraulic cylinders was on a straight line with its corresponding push rod;

Fig. 3 is a top view structural schematic diagram of a specific embodiment 1 of the solar positioning device of the present invention;

Fig. 4 is a top view structure schematic diagram when the second hydraulic cylinder and the second push rod of the second embodiment of the solar positioning device of the present invention are located on a straight line;

Fig. 5 is a top view structure schematic diagram when the first hydraulic cylinder and the first push rod of the second embodiment of the solar positioning device of the present invention are located on a straight line;

Fig. 6 is a top view structure schematic diagram when the second hydraulic cylinder and the first push rod of the third embodiment of the solar positioning device of the present invention are located on a straight line;

Fig. 7 is a structural schematic diagram of a specific embodiment 1 of the solar positioning device of the present invention when the sun just rises or the sun sets when the sun irradiates the ground at a degree almost parallel to the horizontal plane;

Fig. 8 is a structural schematic diagram of a specific embodiment 1 of the solar positioning device of the present invention when the sunlight at noon irradiates the ground vertically;

Figure 9 is a schematic structural view of a specific embodiment of the solar positioning device of the present invention when the angle formed by sunlight and the horizontal plane is an acute angle;

FIG. 10 is a schematic structural view of a solar positioning device according to Embodiment 4 of the present invention;

Fig. 11 is a schematic view showing the top view structure of Embodiment 4 of the solar positioning device of the present invention when the sun just comes out or the sun just goes down, and the second hydraulic cylinder and the second push rod are in a straight line;

Fig. 12 shows the structural schematic diagram of the fourth embodiment of the solar positioning device of the present invention when the sun just rises or the sun sets when the sun irradiates the ground at a degree almost parallel to the horizontal plane;

Fig. 13 shows the structural schematic diagram of the fourth embodiment of the solar positioning device of the present invention when the sunlight at noon irradiates the ground vertically;

Fig. 14 shows the relationship between the thrust of the hydraulic cylinder and the angle curve between the support frame and the turn frame of three different first hydraulic systems;

Fig. 15 is a graph showing the relationship between the length of the hydraulic cylinder and the angle between the support frame and the turntable for the three different first hydraulic systems shown in Fig. 14 .

detailed description

The positioning device of the solar receiving system of the present invention can be applied to solar energy systems of various sizes, and realizes the high-precision tracking of the sun by the solar energy system, so that the solar light receiving plate can be kept perpendicular to the sun's rays at any time, so as to realize the solar energy system Maximum exposure to sunlight. Using the positioning device of the solar receiving system of the present invention can greatly improve the tracking and positioning accuracy of the solar system during operation to the sun, and ensure that the solar receiving panel can track the moving position of the sun in real time throughout the day, so as to improve the utilization rate of the solar system. Describe in detail the specific embodiment of the present invention below in conjunction with accompanying drawing:

In this manual:

1) The control device does not belong to the inventive point of the present invention, so it will not be explained in detail in this specification.

2) The ground and the roof refer to the location where the solar system is fixedly installed, and are not limited to this, and are only used as a guide.

3) The hydraulic cylinder includes a hydraulic cylinder liner and a piston or guide rod slidingly installed in the cylinder liner. In this specification, the cylinder liner is defined as a fixed part, and the movable guide rod or piston is defined as an action part.

4) Horizontal direction: the direction parallel to the ground; height direction: the direction perpendicular to the ground.

5) Dead point: The hydraulic cylinder of the second hydraulic system and the push rod connected to it are in a straight line.

In the solar energy system shown in Figure 1 and Figure 2, the solar system includes a solar positioning device and a solar light receiving plate 2 fixedly installed on the positioning device, and the solar light receiving plate 2 is provided with a fixedly installed solar receiver 1 to sense Signals such as the intensity and angle of the sun's rays are sent to the control device. The control device sends corresponding instructions to the positioning device according to these feedback signals to adjust the position of the solar light receiving panel 2 .

In practical application, the embodiment shown in Fig. 3-Fig. 13 is applied to the solar energy system and can also be installed and used according to the structure shown in Fig. 1 and Fig. 2, and the other parts of the solar energy system omitted in Fig. 3-Fig. The installation method of the present invention is easily conceivable by those skilled in the art, and can be easily seen from Fig. 1 and Fig. 2 , and will not be repeated in other drawings of this specification.

The present invention provides four implementations, and the partial structures of the four implementations are the same, and the same parts are as follows:

As shown in Figures 1 to 13, the positioning device includes:

Rotating member: it can rotate on its axis.

Rotary frame 4: fixedly connected with the rotating part, and rotates with the rotation of the rotating part. When the rotating frame 4 rotates, it drives the sunlight receiving plate 2 to rotate accordingly.

The positioning device includes a base 500 fixedly installed on the ground or on the roof. The base 500 is provided with a central shaft 5 which is rotated.

It can also be that the positioning device includes a base 500 fixedly installed on the ground or on the roof, the base 500 is provided with a fixedly installed central shaft 5, the turntable 4 is fixedly connected with the axle sleeve rotatably installed on the central shaft 5, and rotates Part is the axle sleeve that is rotatably installed on the central shaft 5. This solution is not shown in the accompanying drawings, but those skilled in the art should be able to know the general structure of this solution based on the above text description.

The guide rail 9 is a circular groove, and the guide wheels are slidably installed in the guide rail 9 of the circular groove; or the guide rail 9 is a circular platform, and the guide wheels are rolled and installed on the bottom of the turntable 4 and can be mounted on the guide rail 9 of the circular platform Roll and drive turntable 4 to rotate.

In this embodiment, the central shaft 5 is rotatably installed on the ground or on the roof. As can be seen from the figure, in specific embodiments of the present invention, a base 500 is fixedly installed on the ground or on the roof, and the central shaft 5 rotates. installed in the base 500. The installation method of the specific embodiment of the present invention is only for reference, and the specific installation method of the central shaft 5 is not limited by the specific embodiment of the present invention.

In this embodiment, the transfer frame 4 is fixedly installed on the central shaft 5 , and may be integrated with the central shaft 5 . The transfer frame 4 includes guide wheels slidingly installed on the guide rail 9 . In the specific embodiment of the present invention, the turn frame 4 has a roughly rectangular structure, and its four corners are provided with four legs, and the bottom of the legs is provided with a guide wheel slidingly installed in the guide rail 9, and its four corners are respectively fixedly connected with the central shaft 5 through connecting rods. The structure of the turret 4 in the specific embodiment of the present invention is only for reference, and the specific structure of the turret 4 is not limited by the specific embodiment of the present invention.

In addition to the structure shown in the example of the present invention, it can also be that the turntable 4 is fixedly connected with the bushing that is rotatably installed on the central shaft 5 or that the turnframe 4 is provided with an integrally structured bushing and the like. The shape of the turret 4 is not limited, it can be polygonal or circular or other irregular shapes, it can be a link bracket structure or a plate-shaped solid structure, and it includes at least three guide wheels. Guide wheel both can be to be slidably installed in the guide rail 9 of circular groove, also can be to rotate the roller that is installed in the foot bottom of turn frame 4, drive turn frame 4 to rotate on the guide rail 9 of circular platform. When the guide rail 9 is a platform, its shape is not limited, because the range of motion of the turntable 4 is circular, so it is called a circular platform. When the guide rail 9 is a platform, it not only reduces the rotational friction force of the solar positioning device when it rotates in the horizontal direction, but also makes it difficult for foreign matter such as sand and stones to enter the running track of the rollers, reducing the running time of the entire support structure. risk of failure.

Supporting frame 3: one side thereof is connected to the rotating frame 4 in rotation, and the sunlight receiving plate 2 is fixedly installed on the supporting frame 3.

As shown in the figure, the support frame 3 of the specific embodiment of the present invention is a polygonal steel frame, and one side of a side turn frame 4 of the support frame 3 is connected by a rotating connection, and the support frame 3 can be rotated with respect to the turn frame 3. The sides of the rotary connection are for axis rotation. The structure of the support frame 3 in the specific embodiment of the present invention is only for reference, and the specific structure of the support frame 3 is not limited by the specific embodiment of the present invention.

The first hydraulic system: arranged between the turntable 4 and the support frame 3, used to drive the support frame 3 to rotate relative to the turntable 4 on the side where the support frame 3 and the turntable 4 are rotatably connected; the first hydraulic system includes at least A hydraulic cylinder, the ends of the fixed part and the action part of the hydraulic cylinder are respectively hinged with the turntable 4 and the support frame 3, or the action part and the fixed part of the hydraulic system are respectively hinged with the turntable 4 and the support frame 3.

In the first hydraulic system, the support frame 3 and the turntable 4 are connected through side rotation, so that the support frame 3 can rotate with the side of the rotation connection as the axis under the action of the first hydraulic system, thereby driving The plane where the sunlight receiving plate and the guide rail 9 are located keeps a fixed angle according to different sunlight irradiation angles, so as to ensure the maximum utilization of sunlight.

Specifically, the first hydraulic system in the present invention includes a fourth hydraulic cylinder 800 and a fifth hydraulic cylinder 801 .

Specifically, the projections of the fourth hydraulic cylinder 800 on the plane where the support frame 3 is located and the plane where the turnframe 4 is located form a plane with the fourth hydraulic cylinder 800, and the planes are respectively connected to the plane where the support frame 3 is located and the plane where the turnframe 4 is located. The plane on which it is located is vertical.

The projections of the fifth hydraulic cylinder 801 on the plane where the support frame 3 is located and the plane where the turret 4 is located form a plane with the fifth hydraulic cylinder 801, and the planes are respectively connected to the plane where the support frame 3 is located and the plane where the turret 4 is located. vertical.

The fourth hydraulic cylinder 800 and the fifth hydraulic cylinder 801 are the most labor-saving installation method when installed in the above-mentioned manner. The two work methods are synchronous push or synchronous pull. The models of the two can be the same or different. control and maintenance.

In the specific embodiment of the present invention, the fixed part and the action part of the hydraulic system are hinged with the turntable 4 and the support frame 3 respectively. 3 hinged. By setting the first hydraulic system between the rotatably connected support frame 3 and the turntable 4, the solar light receiving panel 2 fixedly installed on the support frame 3 is driven to rotate to a plane perpendicular to the sunlight according to the angle formed by the sun and the ground plane , and the rotation angle can reach more than 90 degrees, so that the maximum utilization of sunlight can be obtained.

In order to ensure that the first hydraulic system can at least drive the support frame 3 to rotate 90 degrees relative to the turntable 4 with the side of the support frame 3 rotatably connected to the turntable 4 as the axis. As shown in Figures 8 and 13, the distance between the side of the support frame 3 rotatably connected to the turntable 4 in the height direction and the hinge point where the hydraulic cylinder is hinged on the turntable is D, and the support frame 3 is rotatably connected to The distance between the side on the turntable 4 and the hinge point where the hydraulic cylinder is hinged on the turnframe in the horizontal direction is H, and the hinge point where the hydraulic cylinder is hinged on the support frame is rotatably connected to the support frame 3 in the horizontal direction The distance between the sides on 4 is L. The following relationship must be satisfied between the three: 1≤H/L≤15; 1≤H/D≤15.

Considering the follow-up maintenance of the solar energy system, the angle range of the supporting frame 3 rotating relative to the rotating frame 4 with the side of the supporting frame 3 rotatably connected to the rotating frame 4 as the axis must be guaranteed to reach at least 135 degrees.

When the moment of the side of the sun light receiving plate that is connected to the turntable 4 when rotating relative to the support frame 3 is 10000N. When the angle is about 90 degrees, the force of the hydraulic cylinder on the support frame 3 is minimum. When the included angle becomes smaller or larger relative to 90 degrees, the force exerted by the hydraulic cylinder on the support frame 3 increases exponentially. The selection of the hydraulic cylinder is based on the required maximum force.

It can be seen from the figure that when L and H remain unchanged and D increases:

When the angle between the support frame 3 and the turret 4 is about 0 degrees, the smaller D is, the smaller the driving force of the hydraulic cylinder is. bigger. In the curve of the dotted line and the solid line, it can be found that the maximum force of the hydraulic cylinder on the support frame appears on the dotted line. Therefore, the larger D is, the greater the power of the required hydraulic cylinder will be. However, if D is selected too small, the optional length of the hydraulic cylinder will be smaller, making it impossible to find a suitable hydraulic cylinder.

When H and D remain unchanged and L increases:

When the angle between the support frame 3 and the turret 4 is about 0 degrees, the smaller the L, the greater the driving force of the hydraulic cylinder. When the angle between the support frame 3 and the turret 4 is greater than 90 degrees, the smaller the L, the greater the pulling force of the hydraulic cylinder. bigger. However, if L is too large relative to H, the optional length of the hydraulic cylinder will be smaller, resulting in failure to find a suitable hydraulic cylinder.

Because the length of the hydraulic cylinder can be stretched during the working process, the shortest time is that the action part is completely retracted into the fixed part, and the longest time is that the action part is completely extended from the fixed part to the longest. It can be understood that in a conventional hydraulic cylinder, its maximum length will not exceed twice its minimum length. It can be seen from Fig. 15 that the minimum length of the hydraulic cylinder represented by the dotted line is 1.41m (compression) to the maximum length 5.03m (tension), and it is difficult to select a suitable hydraulic cylinder. In the curve where the selection of the hydraulic cylinder is relatively convenient, combined with Figure 14, it can be seen that the hydraulic cylinder represented by the solid line is easy to select and has relatively small power.

From the curves in Figure 14 and Figure 15, it can be found that when the selection of the hydraulic cylinder is convenient, the minimum force of the hydraulic cylinder on the support frame appears on the solid line, so the ratio of L, H, and D is represented by the dotted line 1:3:1 is the preferred value.

Because the higher the power of the hydraulic cylinder, the higher its cost, the larger its size, and the difficulty of maintenance and installation also increases. It is proved by the above experiments, and the comprehensive analysis results show that the preferred value of the ratio of L, H, and D is 2:3:1.

The first hydraulic system: arranged between the turntable 4 and the support frame 3, used to drive the support frame 3 to rotate relative to the turntable 4 on the side where the support frame 3 and the turntable 4 are rotatably connected; the first hydraulic system includes at least A hydraulic cylinder, the ends of the fixed part and the action part of the hydraulic cylinder are respectively hinged with the turntable 4 and the support frame 3, or the action part and the fixed part of the hydraulic system are respectively hinged with the turntable 4 and the support frame 3

Specifically, the rotating member is provided with a fixedly installed push rod, and the second ends of each hydraulic cylinder are respectively connected to the push rod in a hinged manner.

In the specific embodiment of the present invention, the fixed part and the action part of the hydraulic system are hinged with the turntable 4 and the support frame 3 respectively. 3 hinged. By setting the first hydraulic system between the hinged support frame 3 and the turntable 4, the solar light receiving panel 2 fixedly installed on the support frame 3 is driven to rotate to the plane perpendicular to the sunlight according to the angle formed by the sun and the ground plane , and the rotation angle can reach more than 90 degrees, so that the maximum utilization of sunlight can be obtained.

Because the first hydraulic system and the second hydraulic system respectively drive the solar positioning device to move in different directions through different hydraulic cylinders, the precise tracking of the sun's rays by the solar system is realized. This positioning system can be applied to both small solar systems and very large solar systems. Due to the limitation of the power of the motor, the existing motor-driven solar system is no longer applicable when the solar system reaches a certain level. However, as long as the right model is selected for the hydraulic cylinder, its driving force can be large or small, and there is no limitation at all. And different hydraulic cylinders can be controlled through different signal lines, which can track the sun as quickly as possible while streamlining the action as much as possible.

The hydraulic structure design of the first hydraulic system of the positioning device of the solar receiving system has a wide operating range, which is different from the previous simple push rod support structure using ball joints. This hydraulic structure can easily make the operating range of the entire system exceed 90 degrees , and it will not appear that the thrust force on the push rod increases sharply when the rotation angle is large. And the first hydraulic system of the positioning device of the solar receiving system satisfies the condition of L:H:D=1:3:1, which can not only ensure that the support frame can rotate more than 135° relative to the turntable, but also make the first hydraulic system The specifications and costs of the system are minimized. For solar panels with the same weight or the same torque, smaller hydraulic cylinders and rods can be used to complete the rotation of the system in the entire height direction. The difference between the four embodiments of the present invention is:

Embodiment 1, 2, 3:

As shown in FIGS. 1 to 9 , the second hydraulic system includes two hydraulic cylinders: a first hydraulic cylinder 700 and a second hydraulic cylinder 701 .

The central shaft 5 is provided with fixedly installed push rods: the first push rod 600 and the second push rod 601, and the first ends of the first hydraulic cylinder 700 and the second hydraulic cylinder 701 are connected with the first push rod 600 and the second push rod respectively. The rod 601 is hinged.

Wherein the angle formed between the first push rod 600 and the second push rod 601 is 0°˜180°. The angle between the two push rods in embodiment one of the present invention is 90°, the angle between the two push rods in embodiment two is 180°, and the angle between the two push rods in embodiment three is 0° . The difference of embodiment 1,2,3 only lies in this, and other parts are roughly the same.

Two fixed seats are fixedly installed on the ground or on the roof: the first fixed seat 710 and the second fixed seat 711, and the second ends of the first hydraulic cylinder 700 and the second hydraulic cylinder 701 are connected with the first fixed seat 710 and the second fixed seat respectively. The fixing seat 711 is hinged.

During specific implementation, the hydraulic cylinders of the second hydraulic system can apply pushing force to the turntable at the same time, can also apply pulling force to the turntable at the same time, and can also be used in combination with push and pull, which can be implemented according to the instructions of the control device.

The length of the fixed part of the hydraulic cylinder of the second hydraulic system is b, the distance between the fixed seat corresponding to the hydraulic cylinder and the rotating member is c, and the length of the push rod connected with the hydraulic cylinder is a. Then a, b, and c satisfy the following relationship: a≤0.5b, b≤c≤3b. In order to ensure that the second hydraulic system can drive the rotation angle of the turret 4 to not less than 180 degrees, the above-mentioned conditions must be satisfied among a, b, and c, because the relationship between a, b, and c is also related to that between the push rods. The angle is related, so b≤c≤3b does not completely satisfy all situations. When 1.5b≤c≤2.5b, no matter what the angle between the push rods is, when a≤0.5b, it can ensure that the second hydraulic system can drive the turret 4 to rotate at an angle not less than 180 degrees.

When all the hydraulic cylinders of the second hydraulic system are at the dead point, in the absence of external force, the second hydraulic system of the solar positioning device will not be able to operate. And when at least one hydraulic cylinder of the second hydraulic system is not in the state of dead point, the second hydraulic system can still work normally.

In order to avoid the situation that all hydraulic cylinders of the second hydraulic system are at the dead point, when the first hydraulic cylinder 700 and the first push rod 600 are on a straight line, the second hydraulic cylinder 701, the second push rod 601 and the first push rod The line connecting the two fixed seats 711 and the rotating member forms a triangle; The connecting lines of the rotating parts form a triangle.

The range of the above-mentioned proportional relationship between a, b, and c prevents all the hydraulic cylinders of the second hydraulic system from being in the dead point at the same time or that the hydraulic cylinders of the second hydraulic system conflict with each other during work. Specifically, when a≤0.5b and b≤c≤3b are satisfied, the positioning device of the solar receiving system of the second hydraulic system can drive the entire positioning device to rotate more than 180 degrees around the axis of the rotating member. Specifically, when 1.5b≤c≤2.5b, the positioning device of the solar energy receiving system can also avoid the situation that the hydraulic cylinders of the second hydraulic system either conflict with each other or are out of joint during operation.

Example 4:

As shown in FIGS. 10 to 13 , the second hydraulic system includes three hydraulic cylinders: a first hydraulic cylinder 700 , a second hydraulic cylinder 701 and a third hydraulic cylinder 702 .

The central shaft 5 is provided with fixedly installed push rods: the first push rod 600, the second push rod 601 and the third push rod 602, the first hydraulic cylinder 700, the second hydraulic cylinder 701 and the third hydraulic cylinder 702. The ends are respectively hinged with the first push rod 600, the second push rod 601 and the third push rod 602.

In this embodiment, the three push rods are evenly distributed, and the angle between any two of them is 120 degrees. The specific use is not limited by this embodiment, but the method of uniform distribution is more beneficial to the selection of hydraulic cylinders.

There are three fixed seats fixedly installed on the ground or on the roof: the first fixed seat 710, the second fixed seat 711 and the third fixed seat 712, the second hydraulic cylinder 700, the second hydraulic cylinder 701 and the third hydraulic cylinder 702 The ends are respectively hinged with the first fixed seat 710, the second fixed seat 711 and the third hydraulic cylinder 712.

During specific implementation, the hydraulic cylinders of the second hydraulic system can apply pushing force to the turntable at the same time, can also apply pulling force to the turntable at the same time, and can also be used in combination with push and pull, which can be implemented according to the instructions of the control device.

The length of the fixed part of the hydraulic cylinder of the second hydraulic system is b, the distance between the fixed seat corresponding to the hydraulic cylinder and the rotating member is c, and the length of the push rod connected with the hydraulic cylinder is a. Then a, b, and c satisfy the following relationship: a≤0.8b, b≤c≤3b. In order to ensure that the angle range that the second hydraulic system can drive the turret 4 to rotate is within 180 degrees, the above-mentioned conditions must be met among a, b, and c, because the relationship between a, b, and c is also related to that between the push rods. The angle is related, so b≤c≤3b does not fully satisfy all situations. When 1.8b≤c≤2.8b, no matter what the angle between the push rods is, when a≤0.8b, it can ensure that the second hydraulic system can drive the turret 4 to rotate within 180 degrees.

When all the hydraulic cylinders of the second hydraulic system are at the dead point, in the absence of external force, the second hydraulic system of the solar positioning device will not be able to operate. And when at least one hydraulic cylinder of the second hydraulic system is not in the state of dead point, the second hydraulic system can still work normally.

The range of the above-mentioned proportional relationship between a, b, and c prevents all the hydraulic cylinders of the second hydraulic system from being in the dead point at the same time or that the hydraulic cylinders of the second hydraulic system conflict with each other during work. Specifically, when a≤0.8b and b≤c≤3b are satisfied, the positioning device of the solar receiving system of the second hydraulic system can drive the entire positioning device to rotate more than 180 degrees around the axis of the rotating member. Specifically, when 1.8b≤c≤2.8b, the positioning device of the solar energy receiving system can also avoid the situation that the hydraulic cylinders of the second hydraulic system either conflict with each other or are out of joint during operation.

In this embodiment, the actions of these three hydraulic cylinders are carried out in chronological order. When the sun appears in the morning, the first hydraulic cylinder 700 starts to operate, and when the action part of this hydraulic cylinder moves to a certain position, it stops. Then, the second hydraulic cylinder 701 continues to drive (push or pull) the entire turntable 4 to rotate on the track. When the second hydraulic cylinder 701 rotates to a certain position, it stops, and then it is driven by the third hydraulic cylinder 702 (push or pull) Pull) turntable 4 runs on track.

The second hydraulic system of the positioning device of the solar receiving system has two specific implementation modes: the second hydraulic system including two hydraulic cylinders and the second hydraulic system including three hydraulic cylinders, both of which can drive The entire positioning device rotates more than 180 degrees with the axis of the rotating member as the axis. And each hydraulic cylinder can be controlled through different signal channels. The specific 2-cylinder hydraulic system costs less and is more convenient to control. The hydraulic system of the 3 hydraulic cylinders reduces the stroke range of each hydraulic cylinder, which better avoids the situation that the hydraulic systems of the hydraulic cylinders either conflict with each other or are out of touch during operation, and a single hydraulic cylinder is relatively 2 hydraulic cylinders. The power requirements of the hydraulic cylinders of the hydraulic system are lower.

The positioning device of the solar receiving system controls the operation of the entire solar system by cooperating with two sets of independent hydraulic subsystems. They respectively control the rotation angle of the entire positioning device in the height direction and the horizontal direction. At any time of the day, Including the morning and evening when the sun’s altitude angle is very small, ensure that the solar light receiving plate can be perpendicular to the incident sun’s rays, so that there is no dead angle in the operation of the solar receiving plane, and the solar energy can be fully received for a longer time, ensuring that the solar energy can be fully received throughout the day At any moment, the solar light receiving plate can be aligned with the position of the sun accurately.

The positioning device of the solar receiving system controls the operation of the entire solar system by cooperating with two sets of independent hydraulic subsystems. The two sets of hydraulic subsystems use hydraulic cylinders that cooperate with each other to drive the movement of the turntable and the support frame respectively. Each set of hydraulic The working state of the hydraulic cylinders of the subsystem can be stretched at the same time, contracted at the same time, or stretched and retracted according to the actual situation, and the actual work of each individual hydraulic cylinder can be controlled through different signal channels. Many factors such as the power of the hydraulic cylinder and its cost make the positioning device of the solar receiving system suitable for larger and heavier solar receiving systems. The positioning device of the solar receiving system has good structural stability. Different from the aforementioned similar hydraulic mechanism, the supporting structure of the rotating base used in this patent enhances the stability of the entire solar system, especially the design of the circular guide rail at the bottom , which expands the range of the entire solar energy system's focus on the ground, greatly increasing the stability in severe weather such as strong winds, so that the entire system will not be shaken or even overturned due to strong winds and other reasons.

The relationship between a, b and c referred to in this manual is the size of the fixed seat, push rod and itself corresponding to the same hydraulic cylinder. It is applicable to other hydraulic cylinders in the same embodiment.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (8)

1. a positioner for solar energy receiving system, described solar energy system comprises positioner and solidDingan County is contained in the sunshine dash receiver (2) on described positioner, it is characterized in that described positionerComprise:

Revolving part: can its axis be that axle rotates;

Pivoted frame (4): be fixedly connected with described revolving part, rotate with described revolving part, described in turnFrame (4) drives described sunshine dash receiver (2) to rotate while rotation thereupon;

Bracing frame (3): one side and pivoted frame (4) are rotationally connected, described sunshine dash receiver (2) is solidDingan County is contained on support frame as described above (3);

The first hydraulic system: be arranged between described pivoted frame (4) and support frame as described above (3), for drivingThe side that moving support frame as described above (3) is rotationally connected taking bracing frame (3) and described pivoted frame (4) is as axis phaseDescribed pivoted frame (4) is rotated; Described the first hydraulic system comprises at least one hydraulic cylinder, described hydraulic cylinderStanding part and the end of action part hinged with described pivoted frame (4) and bracing frame (3) respectively, orThe action part of person's hydraulic system and standing part are hinged with described pivoted frame (4) and bracing frame (3) respectively;The side that support frame as described above (3) is rotatably connected on pivoted frame (4) cuts with scissors in short transverse and described hydraulic cylinderThe distance that is connected on the pin joint line on pivoted frame (4) is D, and support frame as described above (3) is rotatably connected onSide on frame (4) is hinged on the pin joint line on pivoted frame (4) with described hydraulic cylinder in the horizontal directionDistance be H, described hydraulic cylinder be hinged on pin joint on bracing frame (3) in the horizontal direction with bracing frame(3) distance that is rotatably connected on the side on pivoted frame (4) is L, between three, must meet as ShiShimonosekiSystem: 1≤H/L≤15; 1≤H/D≤15;

The second hydraulic system: rotate taking the axis of revolving part as axle for ordering about pivoted frame (4); Described secondHydraulic system comprises at least two hydraulic cylinders, described the second hydraulic system also respectively corresponding each hydraulic cylinder establishHave the holder being fixedly mounted on the ground or on roof, the first end of described each hydraulic cylinder respectively withEach holder is hinged, and its second end is connected by hinged mode with described revolving part respectively; Described secondThe standing part length of the hydraulic cylinder of hydraulic system is b, the holder corresponding with described hydraulic cylinder and rotationDistance between part is c, and the length of the push rod being connected with described hydraulic cylinder is a, a≤0.8b, and b≤c≤3b。

2. the positioner of solar energy receiving system according to claim 1, is characterized in that, instituteState the first hydraulic system and comprise two hydraulic cylinders: the 4th hydraulic cylinder (800) and the 5th hydraulic cylinder: (801),And L:H:D=1:3:1;

Described the 4th hydraulic cylinder (800) is respectively in plane and pivoted frame (4) institute at bracing frame (3) placePlane projection and described the 4th hydraulic cylinder (800) form a plane, described plane respectively withThe plane at the plane at support (3) place and pivoted frame (4) place is vertical;

Described the 5th hydraulic cylinder (801) is respectively in plane and pivoted frame (4) institute at bracing frame (3) placePlane projection and described the 5th hydraulic cylinder (801) form a plane, described plane respectively withThe plane at the plane at support (3) place and pivoted frame (4) place is vertical.

3. according to the positioner of the solar energy receiving system described in claim 1-2 any one, its featureBe, described positioner also comprises the circular guideway (9) of fixed installation on the ground or on roof,The center of circle of described guide rail (9) and the axis coinciding of described revolving part, described pivoted frame (4) comprises at least 3The individual guide wheel being slidably mounted on described guide rail (9);

Described guide rail (9) is circular groove, and described guide wheel is slidably mounted on the guide rail (9) of described circular grooveIn; Or described guide rail (9) is circular platform, described guide wheel rolls and to be arranged on described pivoted frame (4)On bottom the again guide rail of described circular platform (9), roll and drive described pivoted frame (4) to rotate.

4. the positioner of solar energy receiving system according to claim 3, is characterized in that, fixedPosition device comprises the pedestal (500) of fixed installation on the ground or on roof, on described pedestal (500)Be provided with and rotate the central shaft (5) of installing, described revolving part is described central shaft (5);

Or positioner comprises the pedestal (500) of fixed installation on the ground or on roof, described baseSeat (500) is provided with hard-wired central shaft (5), and described revolving part is for being rotatably installed in described centerAxle sleeve on axle (5).

5. the positioner of solar energy receiving system according to claim 1, is characterized in that, instituteState the second hydraulic system and comprise two hydraulic cylinders: the first hydraulic cylinder (700) and the second hydraulic cylinder (701),Between a, b, c, meet following relation: a≤0.5b, 1.5b≤c≤2.5b.

6. the positioner of solar energy receiving system according to claim 5, is characterized in that, instituteState revolving part and be provided with hard-wired push rod, the second end of each hydraulic cylinder of described the second hydraulic system dividesNot hinged with described push rod; Described push rod comprises the first push rod (600) and the second push rod (601), described inThe second end of the first hydraulic cylinder (700) and the second hydraulic cylinder (701) respectively with described the first push rod (600)Hinged with the second push rod (601);

On described ground or on roof, be installed with two holders: the first holder (710) andTwo holders (711), the second end of described the first hydraulic cylinder (700) and the second hydraulic cylinder (701) dividesNot hinged with described the first holder (710) and the second holder (711).

7. the positioner of solar energy receiving system according to claim 1, is characterized in that, instituteState the second hydraulic system and comprise three hydraulic cylinders: the first hydraulic cylinder (700), the second hydraulic cylinder (701) andThe 3rd hydraulic cylinder (702), 1.8b≤c≤2.8b.

8. the positioner of solar energy receiving system according to claim 7, is characterized in that, instituteState revolving part and be provided with hard-wired push rod, the second end of each hydraulic cylinder of described the second hydraulic system dividesNot hinged with described push rod; Described push rod comprises the first push rod (600), the second push rod (601) and the 3rdPush rod (602), described three push rods are uniformly distributed, and angle is 120 degree between any two, described the first liquidThe first end of cylinder pressure (700), the second hydraulic cylinder (701) and the 3rd hydraulic cylinder (702) is respectively with describedThe first push rod (600), the second push rod (601) and the 3rd push rod (602) are hinged;

On described ground or on roof, be installed with three holders: the first holder (710),Two holders (711) and the 3rd holder (712), described the first hydraulic cylinder (700), the second hydraulic cylinder(701) the second end of the and three hydraulic cylinder (702) respectively with described the first holder (710), secondHolder (711) and the 3rd holder (712) are hinged.