Maintenance-free dual push rod drive for heliostat

Abstract

The application discloses a kind of maintenance-free heliostat double push rod driving devices, including support seat, stand, first push rod module and second push rod module;Support seat is set in the top of stand, and is rotationally connected with stand;First push rod module is rotationally connected with support seat, and is connected with the heliostat module on support seat, for driving heliostat module rotation;Second push rod module is fixedly set on support seat, for driving support seat rotation when heliostat module rotates to preset position, so that the mirror surface of heliostat module is downward.The pitch angle of the heliostat module in the maintenance-free heliostat double push rod driving device of the application is between 0° and 180°, so that the mirror surface can be downward in non-working state, to avoid the deposition of dust, sand and the like, to ensure the mirror surface reflection efficiency, while reducing the cleaning frequency and cleaning difficulty, and the structure is simple, easy to mass production.

Description

Technical Field

[0001] This invention discloses a maintenance-free heliostat double push rod drive device, belonging to the field of solar thermal power generation technology. Background Technology

[0002] Solar thermal power generation is a major way of utilizing solar energy. Currently, tower-type solar thermal power generation is the most common method. Tower-type solar thermal power generation uses heliostats that track the sun in real time to reflect sunlight onto receivers on a tower. The receivers then heat the heat-absorbing medium inside to generate high-temperature, high-pressure steam, which drives a steam turbine generator set to generate electricity.

[0003] When a heliostat tracks the sun in real time, it needs to adjust its pitch angle. In the current technology, the pitch angle of the heliostat can only be rotated between 0° and 90°. This means that when the heliostat is not in operation, the mirror surface is still facing upwards, which causes dust and sand to accumulate on the mirror surface. Especially after rain, the sand and sand are difficult to remove after mixing with rainwater, which increases the difficulty of cleaning and reduces the mirror's reflection efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a maintenance-free heliostat double push rod drive device to solve the technical problems of existing heliostat structures, such as a small pitch angle range, the mirror surface facing upwards when not in operation, easy accumulation of dust and sand, and low mirror reflection efficiency.

[0005] This invention provides a maintenance-free heliostat dual-push rod drive device, including a support base, a column, a first push rod module, and a second push rod module;

[0006] The support base is disposed at the top of the column and is rotatably connected to the column;

[0007] The first push rod module is rotatably connected to the support base and is also connected to the date-fixing module on the support base, for driving the date-fixing module to rotate;

[0008] The second push rod module is fixedly mounted on the support base and is used to drive the support base to rotate when the date-fixing module rotates to a preset position, so that the mirror surface of the date-fixing module faces downward.

[0009] Preferably, the first push rod module includes a first retractable push rod and a fixing unit;

[0010] The first retractable push rod is rotatably connected to the bottom end of the side wall of the support base;

[0011] One end of the fixing unit is rotatably connected to the first retractable push rod, and the other end is rotatably connected to the top of the support base;

[0012] The date-fixing module is fixed to the fixing unit.

[0013] Preferably, the first retractable push rod includes a first telescopic rod and a first sleeve;

[0014] The first telescopic rod is rotatably connected to the bottom end of the side wall of the support base;

[0015] The first sleeve is fitted over the outside of the first telescopic rod;

[0016] One end of the fixed unit is connected to the first sleeve via a first rotating component.

[0017] Preferably, the support base includes a base body and a working rotating shaft;

[0018] The working rotation shaft is located at the top of the base body;

[0019] The other end of the fixing unit is connected to the working rotating shaft.

[0020] Preferably, the heliostat module includes a main beam circular tube and a heliostat.

[0021] The main beam circular tube is fixedly mounted on the fixing unit;

[0022] The heliostat is fixed to the main beam tube.

[0023] Preferably, the surface of the seat facing the first retractable push rod is an arc-shaped surface;

[0024] The curvature of the arc surface matches the curvature of the main beam's circular tube.

[0025] Preferably, the second push rod module includes a first extension rod, a second extension rod, and a second telescopic push rod;

[0026] The first extension rod is disposed on the side of the support base away from the first push rod module;

[0027] The second extension rod is mounted on the column and is perpendicular to the axis of the column;

[0028] The second retractable push rod is rotatably connected to both the first extension rod and the second extension rod.

[0029] Preferably, the second retractable push rod includes a second sleeve and a second telescopic rod;

[0030] The second sleeve is rotatably connected to the first extension rod via a second rotating component;

[0031] One end of the second telescopic rod extends into the second sleeve, and the other end is rotatably connected to the second extension rod via a third rotating component.

[0032] Preferably, it further includes a first rotating connector, a second rotating connector, and an inverted rotating shaft;

[0033] The first rotating connector is fixedly connected to the bottom of the support base;

[0034] The second rotating connector is fixed to the top of the column;

[0035] The inverted rotating shaft passes through the first rotating connector and the second rotating connector.

[0036] Preferably, it also includes an azimuth rotary reducer;

[0037] The column includes a rotating portion and a fixed portion that are divided along its axial direction from top to bottom;

[0038] The azimuth rotary reducer is disposed between the fixed part and the rotating part, and is used to drive the rotating part to rotate in the horizontal direction.

[0039] The maintenance-free heliostat double pusher drive device of the present invention has the following advantages compared with the prior art:

[0040] Beneficial effects:

[0041] The heliostat module in the maintenance-free heliostat double push rod drive device of the present invention has a pitch angle between 0° and 180°, so that when not in operation, the mirror surface can be facing downwards to avoid the accumulation of dust, sand and other contaminants. This ensures the mirror reflection efficiency while reducing the cleaning frequency and difficulty. In addition, the structure is simple and easy to mass-produce. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the maintenance-free heliostat double push rod drive device in an embodiment of the present invention when the mirror surface of the heliostat is horizontally upward;

[0043] Figure 2 This is a schematic diagram of the maintenance-free heliostat double push rod drive device in an embodiment of the present invention when the mirror surface of the heliostat is perpendicular;

[0044] Figure 3 This is a schematic diagram of the maintenance-free heliostat double push rod drive device in an embodiment of the present invention when the mirror surface of the heliostat is horizontally downward.

[0045] In the diagram, 11 is the base; 12 is the working rotating shaft; 21 is the rotating part; 22 is the fixed part; 31 is the first sleeve; 32 is the first telescopic rod; 33 is the fixed unit; 34 is the first rotating component; 4 is the main beam round tube; 51 is the second sleeve; 52 is the second telescopic rod; 53 is the second rotating component; 54 is the third rotating component; 55 is the first extension rod; 56 is the second extension rod; 6 is the first rotating connecting body; 7 is the second rotating connecting body; 8 is the inverted rotating shaft; and 9 is the azimuth rotary reducer. Detailed Implementation

[0046] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0047] This invention provides a maintenance-free heliostat dual-push-rod drive device, such as... Figures 1 to 3 As shown, it includes a support base, a column, a first push rod module, and a second push rod module;

[0048] The support base is located at the top of the column and is rotatably connected to the column.

[0049] The first push rod module is rotatably connected to the support base and to the heliostat module on the support base, and is used to drive the heliostat module to rotate; the first push rod module of this embodiment of the invention can realize the maximum rotation of the heliostat mirror surface in the heliostat module from the horizontal upward direction to the vertical direction.

[0050] The second pusher module is fixedly mounted on the support base and is used to drive the support base to rotate when the heliostat module rotates to a preset position, so that the mirror surface of the heliostat module faces downward. In this embodiment of the invention, the second pusher module can achieve maximum rotation of the heliostat mirror surface from the vertical direction to facing downward. During use, the heliostat mirror surface can be tilted downward or completely downward.

[0051] The heliostat module in the maintenance-free heliostat double push rod drive device of the present invention has a pitch angle between 0° and 180°, so that when not in operation, the mirror surface can be facing downwards to avoid the accumulation of dust, sand and other contaminants. This ensures the mirror reflection efficiency while reducing the cleaning frequency and difficulty. In addition, the structure is simple and easy to mass-produce.

[0052] The first push rod module in this embodiment of the invention includes a first retractable push rod and a fixing unit 33;

[0053] The first telescopic push rod is rotatably connected to the bottom end of the side wall of the support base;

[0054] One end of the fixed unit 33 is rotatably connected to the first telescopic push rod, and the other end is rotatably connected to the top of the support base;

[0055] The date-fixing module is fixed on the fixed unit 33.

[0056] For example, the first retractable push rod of the present invention includes a first telescopic rod 32 and a first sleeve 31;

[0057] The first telescopic rod 32 is rotatably connected to the bottom end of the side wall of the support base;

[0058] The first sleeve 31 is fitted onto the outside of the first telescopic rod 32;

[0059] One end of the fixed unit 33 is connected to the first sleeve 31 via the first rotating member 34.

[0060] In this embodiment of the invention, a first rotating member 34 is used to connect the first sleeve 31 and the fixed unit 33, which enables the fixed unit 33 to rotate relative to the first sleeve 31, thereby facilitating the smooth rotation of the date-fixing module.

[0061] The first push rod module of this embodiment of the invention can realize the conversion of the date-setting module from Figure 1 The black solid triangle in the middle is facing upwards (mirror side facing upwards). Rotate to its maximum position as shown. Figure 2 The solid black triangle shown, facing left (mirror perpendicular to the ground), ensures stable rotation of the heliostat module and has a simple structure. In this embodiment, the first push rod module is driven by a motor.

[0062] The support base of this invention includes a base body 11 and a working rotation shaft 12;

[0063] The working rotation shaft 12 is located at the top of the base 11;

[0064] The other end of the fixed unit 33 is connected to the working rotating shaft 12.

[0065] To ensure the stability of the heliostat module, the heliostat module in this embodiment of the invention includes a main beam circular tube 4 and a heliostat mirror;

[0066] The main beam circular tube 4 is fixedly mounted on the fixed unit 33;

[0067] The heliostat is fixed on the main beam circular tube 4.

[0068] To reduce the pressure on the first push rod module when the date-fixing module rotates, the surface of the base 11 facing the first retractable push rod in this embodiment of the invention is an arc-shaped surface;

[0069] The curvature of the arc surface matches the curvature of the main beam circular tube 4, thereby transferring part of the gravity of the heliostat module to the base 11, reducing the stress on the first push rod module, preventing its damage, and extending its service life.

[0070] The second push rod module of this embodiment of the invention includes a first extension rod 55, a second extension rod 56, and a second telescopic push rod;

[0071] The first extension rod 55 is located on the side of the support body 11 away from the first push rod module;

[0072] The second extension rod 56 is mounted on the column and is perpendicular to the axis of the column;

[0073] The second telescopic push rod is rotatably connected to the first extension rod 55 and the second extension rod 56 respectively.

[0074] The second telescopic rod includes a second sleeve 51 and a second telescopic rod 52;

[0075] The second sleeve 51 is rotatably connected to the first extension rod 55 via the second rotating member 53.

[0076] One end of the second telescopic rod 52 extends into the second sleeve 51, and the other end is rotatably connected to the second extension rod 56 via the third rotating member 54.

[0077] In this embodiment of the invention, the support seat can be rotated on the column by extending and retracting the second telescopic rod 52.

[0078] This invention uses a second pusher module to realize the conversion of the date-setting module from... Figure 2 Rotate the solid black triangle in the middle to the left (with the mirror perpendicular to the ground) until... Figure 3 The black solid triangle in the middle is in a downward-facing state (mirror-facing state), thus achieving the inverted snapping of the mirror surface. In this embodiment of the invention, the second push rod module is driven by a motor.

[0079] The movement angles of the first push rod module and the second push rod module of the present invention are both between 0° and 90°.

[0080] In this embodiment of the invention, the heliostat is composed of multiple plane mirrors and has an inverted channel, wherein the width of the inverted channel is greater than the diameter of the column.

[0081] When the heliostat's mirror is switched between facing up and down, the inverted channel passes through the column, preventing the column from affecting the adjustment of the heliostat's pitch angle, thus enabling the pitch angle to switch between 0° and 180°.

[0082] To improve the stability of the rotatable connection between the support base and the column, this embodiment of the invention also includes a first rotatable connector 6, a second rotatable connector 7, and an inverted rotatable shaft 8;

[0083] The first rotating connecting body 6 is fixedly connected to the bottom of the support base;

[0084] The second rotating connector 7 is fixed to the top of the column;

[0085] The inverted rotating shaft 8 passes through the first rotating connector 6 and the second rotating connector 7.

[0086] The cross-section of the intersection of the first rotating connector 6 and the second rotating connector 7 is triangular, and the inverted rotating shaft 8 passes through the triangular area, which makes the force more uniform and ensures the stability of the rotating connection while facilitating rotation.

[0087] To further increase the directional maneuverability of the heliostat module, this embodiment of the invention also includes an azimuth rotary reducer 9;

[0088] At this point, the column is divided into a rotating part 21 and a fixed part 22 along its axial direction from top to bottom; and a support base is provided at the top of the rotating part 21.

[0089] The azimuth rotary reducer 9 is located between the fixed part 22 and the rotating part 21. Its bottom is fixedly connected to the fixed part 22 and its top is fixedly connected to the rotating part 21. It is used to drive the rotating part to rotate in the horizontal direction, thereby enabling the soothing module to perform a wide range of pitch angle adjustments while rotating in a circle in the horizontal direction.

[0090] The maintenance-free heliostat double push rod drive device of the present invention has a simple structure, low cost, and is easy to mass-produce. The pitch angle of the heliostat module is between 0° and 180°, so that when not in operation, the mirror can be tilted downward or completely downward to avoid the accumulation of dust, sand and other contaminants. This ensures the mirror's reflection efficiency while reducing the cleaning frequency and difficulty.

[0091] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A maintenance-free heliostat double-push rod drive device, characterized in that, Includes a support base, a column, a first push rod module, and a second push rod module; The support base is disposed at the top of the column and is rotatably connected to the column; The first push rod module is rotatably connected to the support base and is also connected to the date-fixing module on the support base, for driving the date-fixing module to rotate; The second push rod module is fixedly mounted on the support base and is used to drive the support base to rotate when the date-fixing module rotates to a preset position, so that the mirror surface of the date-fixing module faces downward. The first push rod module includes a first retractable push rod and a fixing unit; the first retractable push rod is rotatably connected to the bottom end of the side wall of the support base; one end of the fixing unit is rotatably connected to the first retractable push rod, and the other end is rotatably connected to the top end of the support base. The date-fixing module is fixed to the fixing unit; The first telescopic push rod includes a first telescopic rod and a first sleeve; the first telescopic rod is rotatably connected to the bottom end of the side wall of the support base; the first sleeve is sleeved on the outside of the first telescopic rod; one end of the fixing unit is connected to the first sleeve through a first rotating member; The support base includes a base body and a working rotating shaft; the working rotating shaft is disposed at the top end of the base body; the other end of the fixing unit is connected to the working rotating shaft; The second push rod module includes a first extension rod, a second extension rod, and a second telescopic push rod; the first extension rod is disposed on the side of the support base away from the first push rod module; the second extension rod is disposed on the column and perpendicular to the axis of the column; the second telescopic push rod is rotatably connected to the first extension rod and the second extension rod respectively. The second telescopic push rod includes a second sleeve and a second telescopic rod; the second sleeve is rotatably connected to the first extension rod via a second rotating member; one end of the second telescopic rod extends into the second sleeve, and the other end is rotatably connected to the second extension rod via a third rotating member; It also includes a first rotating connector, a second rotating connector, and an inverted rotating shaft; the first rotating connector is fixedly connected to the bottom of the support base; the second rotating connector is fixed to the top of the column; the inverted rotating shaft passes through the first rotating connector and the second rotating connector.

2. The maintenance-free heliostat double-push rod drive device according to claim 1, characterized in that, The heliostat module includes a main beam circular tube and a heliostat. The main beam circular tube is fixedly mounted on the fixing unit; The heliostat is fixed to the main beam tube.

3. The maintenance-free heliostat double-push rod drive device according to claim 2, characterized in that, The surface of the seat facing the first retractable push rod is an arc-shaped surface; The curvature of the arc surface matches the curvature of the main beam's circular tube.

4. The maintenance-free heliostat double pusher drive device according to claim 1, characterized in that, It also includes azimuth rotary reducers; The column includes a rotating portion and a fixed portion that are divided along its axial direction from top to bottom; The azimuth rotary reducer is disposed between the fixed part and the rotating part, and is used to drive the rotating part to rotate in the horizontal direction.

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