CN106837718B

CN106837718B - Stirling solar power generation device

Info

Publication number: CN106837718B
Application number: CN201710100925.7A
Authority: CN
Inventors: 程路
Original assignee: Ningbo China Stirling Engine Manufacturing Co ltd
Current assignee: Ningbo China Stirling Engine Manufacturing Co ltd
Priority date: 2017-02-23
Filing date: 2017-02-23
Publication date: 2023-09-26
Anticipated expiration: 2037-02-23
Also published as: CN106837718A

Abstract

The invention relates to a Stirling solar power generation device which comprises a main support, a support arm, a Stirling motor and a light gathering assembly, wherein the support arm is arranged on the main support, the Stirling motor and the light gathering assembly are respectively arranged at two ends of the support arm, the light gathering assembly comprises a light gathering support and a plurality of light gathering reflectors which are arranged in a split mode, a yielding gap is formed at the lower part of the light gathering assembly for accommodating a part of the support arm when the light gathering assembly rotates, and the light gathering reflectors arranged at the lower part of the light gathering assembly are arranged at a certain distance to form the yielding gap. The split setting of the light gathering reflector in the light gathering component can reduce the transportation cost and the installation cost, and during installation, the light gathering reflector is only required to be fixed with the light gathering bracket respectively without fixing the relative positions of the light gathering reflector, more importantly, a yielding gap is formed between the light gathering reflectors, so that the light gathering component is larger in rotation angle and cannot collide with the supporting arm.

Description

Stirling solar power generation device

Technical Field

The invention relates to the technical field of solar power generation devices, in particular to a Stirling solar power generation device.

Background

The "Stirling engine" was invented in 1816 as a unique heat engine because their theoretical efficiency was almost equal to the theoretical maximum efficiency, known as the Carnot cycle efficiency. The Stirling engine generates power by expanding the gas under heat and compressing it under cold. This is an external combustion engine in which fuel is continuously combusted, vaporized expansion hydrogen (or helium) is used as a motive gas to move a piston, and the expansion gas is cooled in a cold air chamber, and the cycle is repeatedly performed. In the current solar power generation technology, the Stirling motor is mainly applied to the Stirling motor for power generation, and the principle is as follows, the Stirling motor comprises a hot end and a cold end, the Stirling motor and a light condensing component are respectively arranged at two ends of a support, a light source is enabled to be projected onto the hot end of the Stirling motor by rotating the light condensing component, gas at the hot end is heated, the gas is enabled to expand, a piston is made to move, and an internal excitation structure is driven to work to generate electromotive force, so that power generation work is completed.

The current light-gathering component is of an integral structure, and is particularly a concave dish surface, the dish surface or the dish surface is made of reflective materials, so that a focus can be positioned at the hot end of the Stirling motor, and therefore, the problem exists that the whole volume of the light-gathering component is large, if the transportation cost is required to be reduced, the light-gathering component is divided into a plurality of light-gathering reflectors, and then the light-gathering reflectors are spliced to form the whole dish surface, and therefore, the light-gathering reflectors are required to be welded, so that the light-gathering reflectors are installed, but in addition, the position where the light-gathering reflectors are arranged is required to be considered in the installation process, in order to ensure the rotation angle of the light-gathering component, the whole light-gathering component is prevented from colliding with a main bracket or a supporting arm in the rotation process, and the installation cost is obviously increased.

Disclosure of Invention

The invention aims to provide the Stirling solar power generation device which is convenient to transport and install, and can prevent a light condensing component from colliding with a main bracket or a supporting arm in the rotating process, so that the technical problems are solved;

the technical problems solved by the invention can be realized by adopting the following technical scheme: the utility model provides a Stirling solar power generation device, includes main support, support arm, stirling motor and spotlight subassembly, the support arm set up in on the main support, stirling motor and spotlight subassembly set up respectively in the both ends of support arm, spotlight subassembly includes spotlight support and the spotlight speculum that a plurality of components of a whole that can function independently set up, spotlight subassembly's lower part is formed with the clearance of stepping down for hold when spotlight subassembly rotates the part of main support, set up in the spotlight speculum of spotlight subassembly lower part is separated by certain distance setting so as to form the clearance of stepping down.

Further, each light-gathering reflector is fixed with the light-gathering bracket through a manual reversing structure; the manual reversing structure comprises

The reversing protrusion is integrally arranged with the light gathering reflector;

the directional frame is provided with a reversing groove, and the reversing protrusion is clamped in the reversing groove and rotates in the reversing groove;

and the manual fastener is arranged on the orientation frame and used for fixing the reversing protrusion on the orientation frame so as to limit the reversing protrusion to rotate in the reversing groove.

Further, the number of the light gathering reflectors is at least 6, and 6 light gathering reflectors are distributed around the center of the light gathering bracket.

Further, the fixing positions of each light-gathering bracket and the light-gathering reflector are on the same curved surface.

Further, the main bracket is connected with the supporting arm through a reversing driving structure, the reversing driving structure comprises a first rotating unit, a second rotating unit and a rotating bracket,

the first rotating unit comprises a first inner ring, a first outer ring and a first driving motor, wherein the first inner ring and the first outer ring are concentrically arranged, and when the first driving motor works, the first inner ring and the first outer ring relatively rotate;

the second rotating unit comprises a second inner ring, a second outer ring and a second driving motor, wherein the second inner ring and the second outer ring are concentrically arranged, and the second inner ring and the second outer ring relatively rotate when the second driving motor works;

the rotating support is fixed on the main support through a first rotating unit, a plane where the first inner ring and the first outer ring rotate relatively is perpendicular to the axis of the main support, the supporting arm is fixed on the rotating support through a second rotating unit, and a plane where the second inner ring and the second outer ring rotate relatively is parallel to the axis of the main support and the axis of the supporting arm.

Further, the light-gathering bracket comprises a light-gathering support body and a plurality of arched support beams, wherein the light-gathering support body is arranged on the support arm, a plurality of limit grooves are formed in the end face, away from the support arm, of the light-gathering support body, and the number of the limit grooves corresponds to that of the arched support beams; the central part of each arch-shaped supporting beam is welded in the corresponding limit groove and is in contact with the inner wall of the corresponding limit groove.

Further, the number of the arched support beams is 3, and the arched support beams comprise a first arched support beam, a second arched support beam and a third arched support beam; correspondingly, the limit grooves are arranged as a first limit groove, a second limit groove and a third limit groove.

Further, a first yielding groove is formed in the first arched supporting beam, two second yielding grooves are formed in the second arched supporting beam, a third yielding groove is formed in the third arched supporting beam, and the first yielding groove and the third yielding groove can be matched with the two second yielding grooves respectively to fix the first arched supporting beam, the second arched supporting beam and the third arched supporting beam.

Further, the condensing reflector is hexagonal.

Further, the second rotating unit is fixedly provided with a circular pipe hoop, and the supporting arm is locked through the circular pipe hoop so as to fix the second rotating unit and the supporting arm; the circular tube hoop is used for loosening or locking the supporting arm through the fastening component.

The beneficial effects are that: by adopting the technical scheme, the light-gathering reflectors in the light-gathering assembly are arranged in a split mode, so that the transportation cost and the installation cost can be reduced, and when the light-gathering assembly is installed, the light-gathering reflectors are only required to be respectively fixed with the light-gathering bracket without fixing the relative positions of the light-gathering reflectors, and more importantly, a yielding gap is formed between the light-gathering reflectors, so that the light-gathering assembly has a larger rotating angle and cannot collide with the supporting arm in the rotating process.

Drawings

FIG. 1 is a schematic diagram of a Stirling solar power generation device according to the invention;

FIG. 2 is a schematic view of a condensing assembly according to the present invention;

FIG. 3 is a schematic view of a concentrating bracket according to the present invention;

FIG. 4 is a schematic view of a concentrating support according to the present invention;

FIG. 5a is a schematic view of a first arched support beam of the present invention;

FIG. 5b is a schematic view of a second arched support beam according to the present invention

FIG. 5c is a schematic view of a third arched support beam of the present invention;

FIG. 6 is a schematic diagram of a Stirling solar power generation device according to the invention;

FIG. 7 is a schematic diagram of a Stirling solar power plant according to the invention;

FIG. 8A is a schematic view of a first rotary unit according to the present invention;

FIG. 8B is a schematic view of a second rotary unit according to the present invention;

fig. 9 is a schematic diagram of the manual reversing structure of the invention.

Reference numerals: 100. a main support; 200. a support arm; 300. a Stirling motor; 400. a light gathering assembly; 410. a light-gathering bracket; 411. a condensing support; 412. an arched support beam; 412a, a first arched support beam; 412b, a second arched support beam; 412c, a third arched support beam; 413. a limit groove; 413a, a first limit groove; 413b, a second limit groove; 413c, third limit grooves; 414. a central support beam; 415a, a first relief groove; 415b, a second relief groove; 415c, a third relief groove; 420. a condensing mirror; 430. a manual reversing structure; 431. a reversing protrusion; 432. a reversing groove; 433. a manual fastener; 434. a power-assisted sleeve; 440. a relief gap; 510. a first rotating unit; 511. a first inner ring; 512. a first outer ring; 513. a first driving motor; 520. a second rotation unit; 521. a second inner ring; 522. a second outer ring; 523. a second driving motor; 530. rotating the bracket; 531. a first plate body; 532. a second plate body; 533. a third plate body; 540. and (5) a circular tube hoop.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.

Referring to fig. 1, a stirling solar power generation device includes a main bracket 100, a support arm 200, a stirling motor 300 and a condensation module 400, the support arm 200 is disposed on the main bracket 100, the stirling motor 300 and the condensation module 400 are respectively disposed at two ends of the support arm 200, the condensation module 400 includes a condensation bracket 410 and a plurality of condensation mirrors 420 disposed separately, a yielding gap 440 is formed at a lower portion of the condensation module 400 to accommodate a portion of the main bracket 100 when the condensation module 400 rotates, and the condensation mirrors 420 disposed at a lower portion of the condensation module 400 are disposed at a certain distance to form the yielding gap 440, as shown in the figure, the yielding gap 440 can provide a rotating space of the support arm 200.

The condensing bracket 410 includes a condensing support 411 and a plurality of arched support beams 412, and the condensing support 411 is preferably provided in a cylindrical shape to enhance a fixing effect. The light-gathering support body 411 is mounted on the support arm 200, a plurality of limit grooves 413 are formed in the end face, facing away from the support arm 200, of the light-gathering support body 411, the number of the limit grooves 413 corresponds to that of the arched support beams 412, the spacing angles between the limit grooves 413 are equal and are 120 degrees, and the three grooves transversely penetrate through the light-gathering support body 411; the central portion of each arch-shaped support beam 412 is welded in the corresponding limit groove 413 and is in contact with the inner wall of the corresponding limit groove 413. First, as shown in fig. 3 and 4, the arch-shaped support beam 412 is embedded in the limit groove 413 and contacts the inner wall of the limit groove 413, so that an initial positioning effect can be achieved. The arc of each arched support beam 412 is equal, so that the structure of the condensing bracket 410 shown in fig. 3 can be formed, and the condensing effect is better.

Referring to fig. 3 and 4, the number of arch support beams 412 is set to 3, including a first arch support beam 412a, a second arch support beam 412b, and a third arch support beam 412c; correspondingly, the limit grooves 413 are provided as a first limit groove 413a, a second limit groove 413b and a third limit groove 413c, and since the limit grooves 413 are communicated with each other, the first limit groove 413a has a greater groove depth than the second limit groove 413b and the third limit groove 413c in a top view of the condensing support 411. Referring to fig. 5a-5c, a first arched support beam 412a is provided with a first relief groove 415a, and when the first arched support beam 412a is placed in the first limit groove 413a, the first relief groove 415a communicates with the second limit groove 413b to form a groove area for fixing the central portion of the second arched support beam 412 b; the second arched support beam 412b is provided with a second relief groove 415b, and when the second arched support beam 412b is disposed in the groove formed by the second limit groove 413b and the first relief groove 415a, the second relief groove 415b is communicated with the third limit groove 413c to form a groove for fixing the central portion of the third arched support beam 412 c. The condensing unit includes a plurality of split condensing reflectors 420, each condensing reflector 420 is fixed to the condensing bracket 410, that is, the first yielding groove 415a can be matched with the second yielding groove 415b to fix the first arched supporting beam 412a and the second arched supporting beam 412b, and meanwhile, the second yielding groove 415b and the third yielding groove 415c can be fixed to fix the second arched supporting beam 412b and the third arched supporting beam 412c, and the thickness of each arched supporting beam is smaller than the width thereof. As shown in fig. 2, two condensing reflectors 420 are respectively fixed at two ends of each arched support beam 412. The condensing bracket 410 further includes a central supporting beam 414 fixedly disposed at a central position of the end surface of the condensing support 411 away from the supporting arm 200, and a condensing mirror 420 is fixedly disposed on the central supporting beam 414. The fixed positions of the light-gathering reflector 420 and the arched support beam 412 and the fixed positions of the light-gathering reflector 420 and the central support beam 414 are located on the same curved surface. The condensing mirror 420 has a hexagonal shape, preferably a regular hexagonal shape, and increases the light receiving area. The mirror surface of the light-gathering reflector 420 is provided with an inward concave cambered surface, so that the light-receiving area and the light-gathering effect are improved.

The main bracket 100 and the support arm 200 are connected by a reversing driving structure, which includes a first rotating unit 510, a second rotating unit 520 and a rotating bracket 530,

the first rotating unit 510 includes a first inner ring 511, a first outer ring 512 and a first driving motor 513, wherein the first inner ring 511 and the first outer ring 512 are concentrically arranged, and when the first driving motor 513 works, the first inner ring 511 and the first outer ring 512 relatively rotate;

the second rotating unit 520 including a second inner ring 521, a second outer ring 522, and a second driving motor 523, the second inner ring 521 and the second outer ring 522 being concentrically disposed, and the second inner ring 521 and the second outer ring 522 being relatively rotated when the second driving motor 523 operates;

the structure of the reversing unit is shown in fig. 8A and 8B, the inner ring and the outer ring inside are driven to rotate relatively through the rotation of the driving motor, the worm is driven to rotate through the worm wheel, the rotation angle is convenient to adjust, more applications exist in the market, and the rotation of the supporting arm 200 is realized through the two reversing units, meanwhile, the rotation angle is adjustable, and the light following effect is realized.

The rotating bracket 530 is fixed to the main bracket 100 by the first rotating unit 510, and the plane in which the first inner ring 511 and the first outer ring 512 relatively rotate is perpendicular to the axis of the main bracket 100, and the support arm 200 is fixed to the rotating bracket 530 by the second rotating unit 520, and the plane in which the second inner ring 521 and the second outer ring 522 relatively rotate is parallel to the axis of the main bracket 100 and the axis of the support arm 200. Fig. 1 and fig. 6 are schematic diagrams showing the change of the support arm 200 under the driving of the first rotating unit 510, in which the stirling motor 300 and the condensing module 400 are hidden in fig. 6 for more visual representation, it can be seen that, since the first inner ring 511 and the first outer ring 512 of the first rotating unit 510 can rotate relatively, when the first driving motor 513 works, the relative rotation force acts on the support arm 200 to drive the support arm 200 to rotate in the circumferential direction of the main support 100, so as to achieve a rotation effect. In fig. 1 and fig. 7, the second rotating unit 520 drives the support arm 200, and the second inner ring 521 and the second outer ring 522 of the second rotating unit 520 can rotate relatively, so that when the second driving motor 523 works, the rotating bracket 530 is fixed on the main bracket 100, and thus, the support arm 200 is driven to rotate on the plane of the main bracket 100, and the state shown in fig. 7 can be achieved, and thus, a light tracking effect can be achieved through the first rotating unit 510 and the second rotating unit 520.

Referring to fig. 8A and 8B, the main support 100 is fixed to the first inner ring 511, the main support 100 may be directly fixed to the first inner ring 511, the fixing manner may be welding or screw connection, the rotating support 530 is fixed to the first outer ring 512, and may be fixedly connected or screw connected. The rotating bracket 530 is fixed to the second inner ring 521, and the support arm 200 is fixed to the second outer ring 522. It is also possible to fix the second rotating unit 520 to the side of the rotating bracket 530 adjacent to the support arm 200 by welding or screw connection, and the rotating bracket 530 includes a first fixing plate fixed to the first rotating unit 510 and a second fixing plate fixed to the second rotating unit 520, which are perpendicular to each other. The second fixed plate includes the first plate body 531 and the second plate body 532 that are located the coplanar, and first plate body 531 is connected with first fixed plate, and the second plate body 532 is formed by the axial extension of first plate body 531 to support arm 200, and the second rotates the unit 520 and is fixed in on the second plate body 532, staggers the axle center setting with first rotation unit 510 and second rotation unit 520, then second rotation unit 520 just can not be located the axis of first rotation unit 510, then support arm 200 just can not collide main support 100 when rotating with the position of second rotation unit 520 as the centre of a circle, has improved pivoted angle greatly. The perpendicular arrangement of the rotation plane of the first rotation unit 510 and the rotation plane of the second rotation unit 520 can be achieved by the L-shaped rotating frame.

Another embodiment of the drive structure is where main support 100 is fixed to first outer ring 512 and rotating support 530 is fixed to first inner ring 511.

Another embodiment of the driving structure is that the rotating bracket 530 is fixed to the second outer ring 522, and the supporting arm 200 is fixed to the second inner ring 521, and if the second rotating unit 520 is disposed on the side of the rotating bracket 530 away from the supporting arm 200, a relief hole needs to be formed on the rotating bracket 530, and the second inner ring 521 of the second rotating unit 520 is fixed to the supporting arm 200 through a connecting piece.

As another embodiment of the driving structure, a circular tube hoop 540 may be fixed on the second rotating unit 520, and the supporting arm 200 is locked by the circular tube hoop 540 to fix the second rotating unit 520 and the supporting arm 200. The round tube hoop 540 is secured by a fastener assembly to loosen or lock the support arm 200. Thus, the rotary center position of the supporting arm 200 can be adjusted through the circular tube hoop 540, so that the weight balance of the light condensation assembly 400 and the Stirling motor 300 can be realized, and further, the balance weight can be arranged on the light condensation assembly 400, so that the balance effect is improved.

Referring to fig. 2, the condensing reflectors 420 are arranged in a regular hexagon, and the condensing reflectors 420 are arranged in 7, wherein 1 condensing reflector 420 is arranged at the center of the condensing bracket 410, and the remaining 6 condensing reflectors 420 are distributed around the center of the condensing bracket 410, and each condensing bracket 410 and the fixed position of the condensing reflector 420 are on the same curved surface. The area that just can not influence the normal rotation of each spotlight speculum 420 to a certain extent to the setting as far as possible that can increase its light-receiving, can not appear wearing and tearing, guarantees result of use and life, and the mirror surface of spotlight speculum 420 sets up to the cambered surface of indent, and the radian is unfavorable to set up great, and the preferred radian with the cambered surface that spotlight speculum 420 and spotlight support 410 tie point formed is the same, can further improve spotlight effect and light-receiving area. Each condensing reflector 420 is fixed with the condensing bracket 410 through a manual reversing structure 430; referring to fig. 9, the manual reversing arrangement 430 includes

A reversing protrusion 431, wherein the reversing protrusion 431 is integrally arranged with the light gathering reflector 420; the diverting protrusion 431 is provided in a spherical shape. The fixing of the condensing reflector 420 is realized through the universal ball structure, so that the firmness in fixing can be ensured, and a larger rotation angle can be realized, thereby being convenient for focusing.

The directional frame is provided with a reversing groove 432, and the reversing protrusion 431 is clamped inside the reversing groove 432 and rotates in the reversing groove 432; the directional frame is provided with a first threaded hole, the shape of the reversing groove 432 is arranged corresponding to the reversing protrusion 431, the radius of the notch of the reversing groove 432 is smaller than that of the reversing protrusion 431, the locking and preventing of the reversing protrusion 431 from falling out of the reversing groove 432 is achieved, and the limiting effect is achieved.

A manual fastener 433, the manual fastener 433 is disposed on the orientation frame for fixing the reversing protrusion 431 to the orientation frame to limit the rotation of the reversing protrusion 431 inside the reversing groove 432. The manual fastener 433 includes a first threaded shaft that mates with the first threaded bore. The one end that first screw rod deviates from manual fastener 433 is provided with helping hand cover 434, and helping hand cover 434 and first screw rod fixed connection and the both sides at first screw rod form and grab the ear, so, can rotate when needs are fixed and grab the ear, just can form a rotation support stress surface in the position that needs to be fixed, improve fixed effect, it is more laborsaving simultaneously. The one end that first screw rod deviates from helping hand cover 434 is provided with compresses tightly rubber, through compressing tightly the setting of rubber, can improve the bellied 431 effect of locking switching-over, improves structural stability.

The manual reversing structure is matched with the driving structure, so that each mirror surface can be focused accurately, the light-following precision is improved, and the light-following effect is ensured.

The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.

Claims

1. The Stirling solar power generation device comprises a main support, a support arm, a Stirling motor and a light gathering assembly, wherein the support arm is arranged on the main support, and the Stirling motor and the light gathering assembly are respectively arranged at two ends of the support arm;

the main support and the support arm are connected through a reversing driving structure, the reversing driving structure comprises a first rotating unit, a second rotating unit and a rotating support,

the rotating support is fixed on the main support through a first rotating unit, a plane where the first inner ring and the first outer ring relatively rotate is perpendicular to the axis of the main support, the supporting arm is fixed on the rotating support through a second rotating unit, and a plane where the second inner ring and the second outer ring relatively rotate is parallel to the axis of the main support and the axis of the supporting arm;

the main support is fixedly connected with the first inner ring, and the rotating support is fixed with the first outer ring.

2. The stirling solar power apparatus of claim 1 wherein each of said concentrating mirrors is secured to said concentrating bracket by a manual reversing mechanism; the manual reversing structure comprises:

3. The stirling solar power apparatus of claim 1 wherein at least 6 of said concentrating mirrors are provided, 6 of said concentrating mirrors being distributed about the center of said concentrating bracket.

4. The stirling solar power apparatus of claim 1 wherein each of said concentrator supports is positioned on the same curved surface as the fixed location of said concentrating mirror.

5. The Stirling solar power generation device according to claim 1, wherein the light-gathering bracket comprises a light-gathering support body and a plurality of arched support beams, the light-gathering support body is arranged on the support arm, a plurality of limit grooves are formed in the end face, facing away from the support arm, of the light-gathering support body, and the number of the limit grooves corresponds to the number of the arched support beams; the central part of each arch-shaped supporting beam is welded in the corresponding limit groove and is in contact with the inner wall of the corresponding limit groove.

6. The stirling solar power apparatus of claim 5, wherein the number of arched support beams is 3, including a first arched support beam, a second arched support beam, and a third arched support beam; correspondingly, the limit grooves are arranged as a first limit groove, a second limit groove and a third limit groove.

7. The stirling solar power generation device of claim 6, wherein a first curved support beam is provided with a first relief groove, a second curved support beam is provided with two second relief grooves, a third curved support beam is provided with a third relief groove, and the first relief groove and the third relief groove can respectively cooperate with the two second relief grooves to fix the first curved support beam, the second curved support beam and the third curved support beam.

8. The stirling solar power generator of claim 1 wherein the concentrating mirrors are hexagonal.

9. The Stirling solar power generation device according to claim 1, wherein the second rotating unit is fixedly provided with a circular pipe hoop, and the support arm is locked through the circular pipe hoop so as to fix the second rotating unit and the support arm; the circular tube hoop is used for loosening or locking the supporting arm through the fastening component.