CN202711070U - Heliostat and elevation drive of heliostat - Google Patents
Heliostat and elevation drive of heliostat Download PDFInfo
- Publication number
- CN202711070U CN202711070U CN201220366141.1U CN201220366141U CN202711070U CN 202711070 U CN202711070 U CN 202711070U CN 201220366141 U CN201220366141 U CN 201220366141U CN 202711070 U CN202711070 U CN 202711070U
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- elevation angle
- heliostat
- driver
- piston
- component
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Abstract
The utility model provides an elevation drive of a heliostat for a central tower type power station. The elevation drive is constructed into an elevation for controlling a reflecting surface of the heliostat, wherein the reflecting surface is supported by a first component of the heliostat and is rotationally hinged to a second component of the heliostat in a fixed position. The elevation drive is hinged to the first component through a first mounting element and is hinged to the second component through a second mounting element. The elevation drive is constructed to enable the first component to rotate by moving the first mounting element relative to the second mounting element. According to the elevation drive of the heliostat for the central tower type power station, the elevation of the reflecting surface of the heliostat is well controlled. According to another aspect of the disclosed theme of the utility model, a heliostat comprising the elevation drive is provided.
Description
Technical field
The disclosure relates to the solar electrical energy generation tower, and is particularly related to the heliostat that designs for this solar electrical energy generation tower, and is specifically related to its parts.
Background technology
Energy supplier is being devoted to seek substituting primary energy always.A kind of such energy is sun power, and a kind of mode of sun power of utilizing is for adopting central tower-type electricity generation station.
A kind of typical central tower-type electricity generation station arrangement comprises the heliostat array and collects tower.Each heliostat all is configured to follow the tracks of the sun and daylight is reflected to the groove of collecting tower, thereby heats this groove and content thereof.The heat-transfer fluid (it can be the liquid of fused salt for example or deep fat) that consists of heat transport medium is contained in the above-mentioned groove.
The hot fluid of heating is delivered to power house (for example steam power station), and wherein the heat energy of hot fluid is used for driving its one or more turbines, in order to generate electricity as being connected to generator by the wheel shaft with each turbine in a conventional manner.
The utility model content
According to the one side of theme disclosed in the utility model, a kind of elevation angle driver of the heliostat for central tower-type electricity generation station is provided, solved the problem at the elevation angle of the reflecting surface that can not control well heliostat in the prior art.
The technical solution of the utility model is: a kind of elevation angle driver of the heliostat for central tower-type electricity generation station, described elevation angle driver is configured for the elevation angle of the reflecting surface of control heliostat, described reflecting surface is supported by the first component of heliostat and rotary hinge is connected to the second component that heliostat has the fixed position, described elevation angle driver is hinged to first component and is hinged to second component by the second installation elements by the first installation elements, and is configured to by making the first installation elements move to cause the first component rotation with respect to the second installation elements.
Elevation angle driver can comprise piston, and described piston has the piston rod that vertically is hinged in the piston shell, and one in the wherein said installation elements is rigidly connected to piston rod, and in the described installation elements another is rigidly connected to the piston shell.
Described piston can be electric piston, wherein uses electric energy that piston rod is hinged in the piston shell.
Described piston can comprise threaded shaft, and the piston rod that is connected to nut component is configured to cooperate with at least a portion of threaded shank, so that the rotation of threaded shaft causes nut component vertically moving in the piston shell.
Can limit the rotary moving of nut component in the piston shell.
Described elevation angle driver can further comprise control device, and it is configured to utilize electric energy to make the threaded shaft rotation.Described control device can comprise stepper motor.
Described elevation angle driver can further comprise gearing, and it is by described motor-driven and be constructed such that the threaded shaft rotation.Described gearing can comprise planetary gear system.
According to the elevation angle driver of the heliostat for central tower-type electricity generation station of the present utility model, controlled well the elevation angle of the reflecting surface of heliostat.
According to theme disclosed in the utility model on the other hand, provide a kind of heliostat that comprises aforesaid elevation angle driver.
Description of drawings
In order to understand theme disclosed in the utility model and how to implement in order to understand in practice the utility model, now come embodiment is described with unrestriced way of example with reference to the accompanying drawings and only, wherein:
Fig. 1 is the schematic diagram at central tower-type electricity generation station;
Fig. 2 is the skeleton view of the heliostat at the central tower-type electricity generation station shown in Fig. 1;
Fig. 3 A is the skeleton view of the elevation angle driver of the heliostat shown in Fig. 2;
Fig. 3 B is the skeleton view of the elevation angle driver shown in Fig. 3 A, has wherein removed main shell;
Fig. 4 A is the skeleton view of the control device of the elevation angle driver shown in Fig. 3 A;
Fig. 4 B is the viewgraph of cross-section along the intercepting of the line IV-IV among Fig. 4 A;
Fig. 5 A is the skeleton view of the planetary gear system of the control device shown in Fig. 4 A and the 4B;
Fig. 5 B is the viewgraph of cross-section along the intercepting of the line V-V among Fig. 5 A;
Fig. 5 C is the exploded view of the planetary gear system shown in Fig. 5 A;
Fig. 6 is the skeleton view of the secondary annulus body of the planetary gear system shown in Fig. 5 A;
Fig. 7 A is the skeleton view of the electric piston of the elevation angle driver shown in Fig. 3 A;
Fig. 7 B is the viewgraph of cross-section along the intercepting of the line VII-VII among Fig. 7 A;
Fig. 8 A is the skeleton view of the nut component of the electric piston shown in Fig. 7 A and the 7B;
Fig. 8 B is the skeleton view of the nut of the nut component shown in Fig. 8 A;
Fig. 8 C is the skeleton view of the sliding members of the nut component shown in Fig. 8 A;
Fig. 9 is the close-up perspective view of the bottom of the elevation angle driver shown in Fig. 3 A;
Figure 10 is the skeleton view of the end cap of the elevation angle driver shown in Fig. 3 A;
Figure 11 is the skeleton view of bottom of the threaded shank of the electric piston shown in Fig. 7 A and the 7B; And
Figure 12 is the skeleton view of the elevation angle driver shown in Fig. 3 A, and it is depicted as the torque tube that is installed to the interface arrangement shown in Fig. 2 and heliostat.
Embodiment
As shown in Figure 1, provide substantially with the 10 central tower-type electricity generation stations that represent.Central authorities tower-type electricity generation station 10 comprises the array of heliostat 12, and it is configured to the solar radiation of collecting tower 14 reflection bumps.Thereby collecting tower 14 contains by the solar radiation heating of reflection and for the hot fluid (not shown) that electric power is provided to the power house.The power house can be for example hydropower, and in this case, the hot fluid of heating is used for making water overheated, and these water are subsequently by turbine expansion, to obtain the useful energy and to generate electricity.
As shown in Figure 2, each heliostat 12 includes and is configured to heliostat is supported on the base unit 16 of the fixed position in the ground and the mirror assembly 18 that is supported by base unit.
Base unit 16 comprises and will be fixed on the interface arrangement 22 of pylon 20 and the especially position of supporting reflex mirror assembly 18 in the ground.Base unit also comprises position angle driver 24 and elevation angle driver 26, and it controls respectively position angle and the elevation angle of the reflecting surface of mirror assembly 18.
Mirror assembly 18 comprises the torque tube 28 that supports a plurality of sway braces 30.Sway brace 30 supports one or more catoptrons 32, and these catoptrons consist of the reflecting surface of heliostat 12.In addition, provide power control module (PCM) assembly 34 that can be mounted to mirror assembly 18.
Shown in Fig. 3 A and Fig. 3 B, elevation angle driver 26 comprises control device 320, main shell 322, electric piston 324 and cable 326.Control device 320 is configured to instruct the operation of elevation angle driver 26, and utilizes electric energy to provide mechanical energy to electric piston 324.Electric piston 324 is configured to utilize mechanical energy to extend and/or retraction with respect to main shell 322, thereby causes torque tube 28 around the relative rotation of interface arrangement 22, and makes the reflecting surface of heliostat 12 pivot to regulate its elevation angle, below will lay down a definition to this.Cable 326 is configured to promote and the communicating by letter of control device 320, and provides electric power to it.
Shown in Fig. 4 A and Fig. 4 B, control device 320 is included in the electric machine 328 in the electric machine shell 330, and the gearing in drive housing 334 332.
Electric machine 328 is configured to provide electric piston 324 needed mechanical energy.Thereby its can comprise such as Fig. 4 B motor 336 and the controller (not shown) shown in the best.
Motor 336 can be for electric energy conversion is become mechanical energy, for example the arbitrarily suitable equipment of rotation energy.It can comprise the stepper motor by controller control.It can further comprise installing plate 340, have stator module 342 and the output shaft 344 of stepping motor rotor (not shown).In addition, usually provide the cable (not shown) to promote and the communicating by letter and provide controller from electric power to motor 336.
Use is that such as the advantage of the stepper motor of motor 336 it can be used for making torque tube 28 rotations with little increment.Another advantage is its moment of torsion reducing and increase with its speed.Thereby because its speed is very low during use, it can provide relatively high power, such as offsetting such as the external force on the reflecting surface of acting on from wind etc.
Although this description discloses the motor that the rotation energy is provided, and will understand, motor can provide another kind of mechanical energy (for example, it can comprise linear activated mechanism); Those skilled in the art will recognize that, should provide suitable transmission and/or gear drive element that the conversion of motion that is provided by motor is become to make the necessary motion of torque tube 28 rotations.
Provide gearing 332 will be transferred to from the mechanical energy of motor 336 electric piston 324.Like this, the speed of the mechanical energy that it can reduce to provide, and increase its moment of torsion (or vice versa).Such as Fig. 4 B the best illustrate, drive housing 334 is rigidly attached to motor 336 on its top, and is attached to main shell 322 in its bottom.It further comprises compound planetary gear train system 348.
Figure is shown in Fig. 5 A to Fig. 5 C, and planetary gear system 348 comprises central gear 350, and central gear 350 is installed on the output shaft 344 of motor 336 so that with its rotation.Central gear 350 and three planet wheel 352 engagements, described three gears mesh with the first and second annular wheels 354,356 again.
Each planet wheel 352 can comprise two independent gears that are rotatably installed on coaxial 360, and is described coaxial across between two carriages 362 and be installed on two carriages 362.Planetary gear system 348 is designed such that the independent gear on each axle 360 rotates jointly.(for example, can be by arrangement plan 350 so that in the independent gear one realizes this common rotation with the first and second annular wheels 354,356 both engagements.)
The first and second annular wheels 354,356 are respectively formed on the first and second internal tooth wheel bodys 364,366 the inside surface.Annular wheel 354,356 has the different numbers of teeth.For example, the first annular wheel 354 has 40 teeth can have 40 teeth, and secondary annulus 356 has 37 teeth.
Such as Fig. 5 A the best illustrate, the first internal tooth wheel body 354 comprises spline 368, spline 368 and the corresponding recesses (not shown) engagement that is formed on drive housing 346 inside surfaces, thus guarantee that the first internal tooth wheel body 354 is jointly mobile with drive housing 346.When the main shell 322 of drive housing 346 and elevation angle driver 26 was rigidly connected to each other, the first internal tooth wheel body 364 did not move with respect to the main shell of elevation angle driver.
As shown in Figure 6, secondary annulus body 366 comprises the central through-hole 370 that forms with spline 372.In addition, described annular wheel body forms at least one side opening 374, and at least one forms with groove 376.Below will explain the purpose of this structure.
In the operation of planetary gear system 348, motor 336 turns round so that its output shaft 344 rotates, thereby makes central gear 350 rotations.The rotary actuation planet wheel 352 of central gear 350, so that axle 360 separately bears the rotation (being retrained because the motion of the first internal tooth wheel body 364 is rigidly attached to the motion of the drive housing 346 of motor 336, so the first annular wheel 354 does not rotate) of output shaft 344.Because the number of teeth of the first annular wheel 354 is different from the number of teeth of secondary annulus 356, so planet wheel 352 is different from gear ratio between each annular wheel.As a result, cause relative rotation between two annular wheels with the rotation of planet wheels 352 of two annular wheels 354,356 engagements.Because the first annular wheel 354 is fixed with respect to drive housing 346, so thereby main shell 322, secondary annulus 356 and secondary annulus body 366 with respect to the rotation of the main shell of elevation angle driver 26.
Shown in Fig. 7 A and Fig. 7 B, electric piston 324 comprises piston rod 378, and piston rod 378 forms threaded shaft 380 (it can be ball screw) and is accommodated in wherein hollow tubular, so that both are suitable for relative to each other vertically moving.The main shell 322 of elevation angle driver 26 consists of the piston shell of electric piston 324.In addition, electric piston comprises bracing strut 349, and nut component 351.
At least a portion of threaded shaft 380 is threaded; Perhaps, it can be threaded along its whole length.Threaded shaft is configured to 366 rotations of secondary annulus body, thereby with respect to main shell 322 rotations.The top 382 of threaded shaft 380 is threaded, and (not shown among Fig. 7 A and Fig. 7 B with the restriction bolt 384 of planetary gear system 348; Can the best in Fig. 5 B find out) cooperate.Get back to Fig. 5 B and Fig. 5 C, the threaded shaft 380 under restriction bolt 384 provides pad 386.Pad 384 comprises and upwarps end 388, upwarp end 388 against and flush with one of side of restriction bolt 386 so that separately relative to each other movement of restriction.In addition, pad 386 comprises downward protrusion 390, and downwards protrusion 390 can be the groove 376 in the addressing hole 374 that is formed on secondary annulus body 366, so that separately relative to each other movement of restriction.Groove 392 is formed on threaded shaft 380 near in the side on its top 382.Threaded shaft 380 is inserted through the central through-hole 370 of secondary annulus body 366, so that the spline 372 of internal tooth wheel body is accommodated in the groove 392, thereby guarantees that threaded shaft and secondary annulus body rotate jointly.According to above configuration, the rotation of secondary annulus body 366 (rotation by the output shaft 344 of motor 336 causes) causes threaded shaft 380 rotations, and can not cause limiting bolt 342 with respect to its rotation and therefore from its disengaging.
Provide bracing strut 349 to think that threaded shaft 380 provides stability, below will lay down a definition to this.Described bracing strut comprises axle bush 394 and several bearings 396.Bearing 396 rigidity are installed in the shell 334 of gearing 332.Bracing strut 349 comprises the through hole 398 that passes axle bush 394 and bearing 396.Taking in of the bracing strut 349 of this configuration promotion threaded shaft 380.
Shown in Fig. 8 A to Fig. 8 C, nut component 351 comprises the nut 400 that can be the bulb nut, and sliding members 402.
Such as Fig. 8 B the best illustrate, nut 400 comprises top 404, bottom 406 and through hole 408.Top 404 is with non-circular formation.For example, it can comprise flattened side alternately and circle side 410,412.Bottom 406 comprises spline 414.Through hole 408 is configured to cooperate with the threaded section of threaded shaft 380.
Such as Fig. 8 C the best illustrate, sliding members 402 comprises through hole 416, the shape of through hole 416 is corresponding to the top 404 of nut 400, for example has flattened side alternately and circle side 418,420.In addition, it comprises two pairs of ridges 422, every pair of groove produced in therebetween 424.Groove 424 is corresponding to the ridge (not shown) of main shell 322 inside that are formed on elevation angle driver 26.In nut component 351 is installed in main shell 322, so that groove 424 is when being accommodated in ridge wherein, thereby has limited the rotation of nut component in main shell, and allowed its vertically moving in main shell.
As mentioned above, piston rod 378 exists with the form of hollow tubular.Get back to Fig. 7 A, its top 428 forms in order to be assemblied on the bottom 406 of nut 400.It is formed with oncus 432 and vertically moves with it in order to guarantee.In addition, its in the generation type of inside so that the spline 414 of itself and bottom 406 pastes assembles suitablely, so that with rotation therewith.Piston rod 378 further has the end cap 434 at its 436 places, bottom, as shown in Figure 9.
As shown in figure 10, end cap 434 comprises upper end 437 and the bottom 440 with spline 438, and the bottom forms cylinder and comprises the through hole 442 that runs through wherein.In addition, the generation type of the bottom 436 of piston rod 378 is to above similar with reference to described its top 428 of figure 7A, specifically, its generation type so that its be assemblied on the upper end 436 of end cap 434.
Threaded shaft 380 is passed bracing strut 349 and nut component 351, and almost extends through the whole length of piston rod 378.For preventing its moving radially in threaded shank 380, be provided at the ring 444 at place, threaded shaft 380 bottoms, as shown in figure 11.The external diameter of described ring approximates the internal diameter of piston rod 378, and is assemblied on the threaded shaft in order to promote its rotation in piston rod.
Get back to Fig. 9, the bottom of main shell 322 comprises side direction ridge 446.Ridge 446 can form with shell is whole, or as shown in the figure, as the parts with 448 separate elements that firmly are installed to main shell 322 that represent.Ridge comprises the through hole 450 that runs through wherein.
As shown in figure 12, elevation angle driver 26 is installed to interface arrangement 22 via end cap 434, and namely the mounting rod of interface arrangement rotatably is accommodated in the through hole 442 of end cap.In addition, it is installed to torque tube 28 via ridge 446, and the installation elements that namely is attached to torque tube rotatably is accommodated in the through hole 450 of ridge.Therefore end cap 434 and ridge 446 have consisted of the installation elements of elevation angle driver 26.
In use, controller is to motor 336 transmitted signals so that 344 rotations of its output shaft.As mentioned above, this causes the rotation of threaded shaft 380.Because threaded shaft 380 being spirally connected in nut component 351, the rotation of threaded shaft causes nut component in main shell 322 interior longitudinal sliding motions, thereby cause piston rod 378 with respect to extension or the retraction of main shell, and caused thus being attached to the end cap 434 of piston rod with respect to extension or the retraction of main shell.This of end cap 434 moves the change of distance between the through hole 450 of the through hole 442 that causes end cap 434 and ridge 446.Because torque tube 28 is connected to interface arrangement around the axle rotary hinge that represents with X among Figure 12, and both tie points of the through hole 450 of the through hole 442 of described axle and end cap 434 and ridge 446 separate, so the change of distance causes the pivot of torque tube 28, and caused thus the pivot of mirror assembly 18, so caused the change at the elevation angle of reflecting surface.
Those skilled in the art under the utility model is easy to understand, in the situation that does not break away from the utility model (necessary revision) scope, can carry out multiple variation, change and modification to it in addition.
Claims (10)
1. elevation angle driver that is used for the heliostat at central tower-type electricity generation station, described elevation angle driver is configured for the elevation angle of the reflecting surface of the described heliostat of control, described reflecting surface is supported by the first component of described heliostat and rotary hinge is connected to the second component that described heliostat has the fixed position, it is characterized in that: described elevation angle driver is hinged to described first component and is hinged to described second component by the second installation elements by the first installation elements, and is configured to by making described the first installation elements move to cause described first component rotation with respect to described the second installation elements.
2. the elevation angle according to claim 1 driver, it is characterized in that: comprise piston, described piston has the piston rod that vertically is hinged in the piston shell, one in the wherein said installation elements is rigidly connected to described piston rod, and in the described installation elements another is rigidly connected to described piston shell.
3. the elevation angle according to claim 2 driver, it is characterized in that: described piston is electric piston, wherein said piston rod is to use electric energy and be hinged in the described piston shell.
4. the elevation angle according to claim 3 driver, it is characterized in that: described piston comprises threaded shaft, the described piston rod that is connected to nut component is configured to cooperate with at least a portion of described threaded shank, so that the rotation of described threaded shaft causes described nut component vertically moving in described piston shell.
5. the elevation angle according to claim 4 driver, it is characterized in that: the rotary moving of described nut component in described piston shell is restricted.
6. the elevation angle according to claim 3 driver, it is characterized in that: further comprise control device, described control device is configured to utilize electric energy so that the rotation of described threaded shaft.
7. the elevation angle according to claim 6 driver, it is characterized in that: described control device comprises stepper motor.
8. the elevation angle according to claim 7 driver, it is characterized in that: further comprise gearing, described gearing is by described motor-driven and be constructed such that described threaded shaft rotation.
9. the elevation angle according to claim 8 driver, it is characterized in that: described gearing comprises planetary gear system.
10. a heliostat is characterized in that: comprise according to each described elevation angle driver in the aforementioned claim.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220366141.1U CN202711070U (en) | 2012-07-26 | 2012-07-26 | Heliostat and elevation drive of heliostat |
| CN201380011871.7A CN104136863B (en) | 2012-03-01 | 2013-02-28 | Heliostats, and methods and apparatus for assembly thereof |
| PCT/IB2013/051601 WO2013128403A1 (en) | 2012-03-01 | 2013-02-28 | Heliostats, and methods and apparatus for assembly thereof |
| US14/380,347 US20150015975A1 (en) | 2012-03-01 | 2013-02-28 | Heliostats, and methods and apparatus for assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220366141.1U CN202711070U (en) | 2012-07-26 | 2012-07-26 | Heliostat and elevation drive of heliostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202711070U true CN202711070U (en) | 2013-01-30 |
Family
ID=47591352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220366141.1U Expired - Fee Related CN202711070U (en) | 2012-03-01 | 2012-07-26 | Heliostat and elevation drive of heliostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202711070U (en) |
-
2012
- 2012-07-26 CN CN201220366141.1U patent/CN202711070U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20180726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |