CN202886711U

CN202886711U - Reflector and heliostat

Info

Publication number: CN202886711U
Application number: CN2012203013847U
Authority: CN
Inventors: S.赫斯; Z.什维茨; R.巴沃尔; M.斯卢茨基; N.克鲁格曼
Original assignee: Source Industry (israel) Co Ltd Of Light
Current assignee: Source Industry (israel) Co Ltd Of Light
Priority date: 2012-06-21
Filing date: 2012-06-21
Publication date: 2013-04-17
Anticipated expiration: 2022-06-21

Abstract

The utility model provides a reflector used in a reflection apparatus of a heliostat used for a central tower type power station, and also a heliostat. The reflector comprises at least one reflection surface. The heliostat comprises the above reflector.

Description

Catoptron and heliostat

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 the solar electrical energy generation tower.

A kind of typical solar electrical energy generation tower apparatus comprises the array of heliostat 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

One side according to theme disclosed in the utility model, the reflection problems of the catoptron that uses for the reflection unit that overcomes in the prior art heliostat that is used for central tower-type electricity generation station, the catoptron that provides a kind of reflection unit of the heliostat for central tower-type electricity generation station to use, this catoptron comprises at least one reflecting surface.

Catoptron can have rectangular shape, and it highly is that 3300 millimeters and width are 2300 millimeters.The weight of catoptron can be 74.59 kilograms.

Reflecting surface can have at least 92.5% reflectivity.

The back of the catoptron relative with the face with reflecting surface can be provided with protective finish.

According to theme disclosed in the utility model on the other hand, provide a kind of heliostat that comprises aforesaid catoptron.Heliostat can comprise two these type of catoptrons.

The catoptron that the reflection unit of the heliostat that is used for central tower-type electricity generation station that the utility model provides uses has the high reflection surface, and reflecting effect is good.

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 of solar electrical energy generation tower;

Fig. 2 is the skeleton view of the heliostat of the solar electrical energy generation tower shown in Fig. 1;

Fig. 3 A and Fig. 3 B are respectively top perspective and the bottom perspective view according to the reflection unit of theme disclosed in the utility model;

Fig. 4 is the skeleton view of the torque tube of the reflection unit shown in Fig. 3 A and Fig. 3 B;

Fig. 5 A is the front view of the sway brace of the reflection unit shown in Fig. 3 A and Fig. 3 B;

Fig. 5 B is the cut-open view along the sway brace of the intercepting of the line VV among Fig. 5 A;

Fig. 6 A is the front view of the brace of the reflection unit shown in Fig. 3 A and Fig. 3 B;

Fig. 6 B is the nearly skeleton view on the top of the brace shown in Fig. 6 A;

Fig. 6 C is the nearby view of the bottom of the brace shown in Fig. 6 A;

Fig. 7 is the skeleton view of the crossbeam of the reflection unit shown in Fig. 3 A and Fig. 3 B;

Fig. 8 is the truss of the reflection unit shown in Fig. 3 A and Fig. 3 B and the nearly skeleton view of torque tube; And

Fig. 9 A and Fig. 9 B are respectively the center rest of the reflection unit shown in Fig. 3 A and Fig. 3 B and the skeleton view of side bracket.

Embodiment

As shown in Figure 1, provide usually with the 10 solar electrical energy generation towers that represent.Solar electrical energy generation tower 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 included) 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 device 16 of the fixed position in the ground and the heliostat assembly 18 that is supported by base device.

Base device 16 comprises the pylon 20 that is fixed in the ground and the position of especially supporting heliostat assembly 18 and the interface arrangement 22 that is supported by pylon.Base device 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 heliostat assembly 18.

Heliostat assembly 18 comprises the torque tube 28 that supports a plurality of sway braces 30.Some sway braces 30 support the catoptron 32 of the reflecting surface that consists of heliostat 12 by a plurality of carriages 34, each carriage 34 includes the pad 36 that for example is attached to the back side of catoptron by gummed.Also be provided for the brace 38 that supports.Two braces 38 and a sway brace 30 consist of triangular structure together, to provide support.Sway brace 30, catoptron 32, carriage 34 and brace 38 consist of mirror assembly.

Shown in Fig. 3 A and 3B, reflection unit 600 comprises common mirror assemblies with 601 expressions, and torque tube 28.Each sway brace 30 consists of the truss 604 of mirror assembly 601 with two braces 38 and crossbeam 602.Crossbeam 602 also is used for supporting torque tube 28, thereby is convenient to its motion is transferred to catoptron 32.

As shown in Figure 4, torque tube 28 is the hollow tube at both ends open.It comprises a plurality ofly is convenient to various solid elements and passes wherein slit 444,554,606.

Slit

554 and 606 can vertically arrange along the length direction of torque tube 28, and slit 444 is with respect to

slit

554 and 606 radial deflection slightly.Slit 444,554 is convenient to be connected to the motor element of heliostat 12, and slit 606 is convenient to be connected to truss 604, thereby helps mechanical energy is transferred to mirror assembly from the motor element of heliostat.Torque tube 28 can be made by any suitable material, and has enough physical strengths, transfers to mirror assembly 601 with the mechanical energy of the form that will rotatablely move, and remarkable distortion can not occur, and namely reaches this distortion and will adversely affect the degree of its work.

Provide sway brace 30 with along its width supporting reflex mirror 32.Usually, provide several (for example, three) sway braces 30 spaced in parallel to each other for each catoptron 32.For example see from Fig. 5 A and Fig. 5 B, each sway brace 30 forms the slender member with general L shaped profile, and it has king plank 608 and substantially vertically from the shorter bottom sides of wherein stretching out along 610.Sway brace 30 can be by extruding or forming by any other suitable method.The king plank 608 of each sway brace 30 form have a plurality of such as lower through-hole: eight

carriage mounting hole

612a, 612b, 612c and 612d(are hereinafter, the carriage mounting hole will be unified by 612 expressions) form along the coboundary 614 of sway brace, two brace mounting holes 616 are formed at the opposite side of sway brace, and crossbeam mounting hole 618 is formed near the length mid point of sway brace or its, and this moment is near the bottom sides edge of sway brace.

Hole 612,616,618 can arrange around perpendicular axes of symmetry X support bar, and wherein this axle X support bar separates support bar 30 in short transverse, and passes the length mid point of sway brace.In addition, other hole 620 can be formed in the support bar 30.When using or dispose mirror assembly 601, these holes are without any function and usage, but it is formed to be convenient to the manufacturing of mirror assembly 601, for example with hook or other similar supporting member it is hung up when making or dispose mirror assembly or its parts by being convenient to.

Mid point between six outmost

carriage mounting hole

612a, 612b and 612c and the carriage mounting hole 612d can be along the length of sway brace 30 equi-spaced apart each other.These holes can form along parabolic path, and the wherein spaced furthest of innermost carriage mounting hole 612d and coboundary 614, and the summit of parabolic path is between two innermost carriage mounting hole 612d, that is, this parabolical opening is towards catoptron 32.The para-curve of carriage mounting hole 612 is arranged and is made catoptron 32 be parabolic shape in the direction that is parallel to sway brace 30 length.

As mentioned above, brace mounting hole 616 is formed at the opposite side of sway brace.They form symmetrically, namely with axle X support bar equi-spaced apart.

Shown in Fig. 6 A and Fig. 6 B, each brace 38 forms the slender member with general L shaped profile, and it has king plank 622 and the inferior lath 624 from wherein stretching out substantially vertically.Brace 38 can be by extruding or forming by any other suitable method.Shown in Fig. 6 C, but bottom 626 angulations of each brace 38, that is and, its side margins 628 is straight, and forms non-perpendicular angle with top 629a and the bottom margin 629b of king plank 622.In assembling during truss 604, the sharp angle α that is formed between the bottom margin 629b of side margins 628 and king plank 622 can be identical with the acute angle that is formed between brace 38 and the sway brace 30.Equally, but also angulation of the top 630 of each brace 38, so the king plank 622 of brace has trapezoidal shape.The king plank 622 of each brace 38 forms has two through holes 632,634, and each through hole is all near its end.From Fig. 6 B, be clear that, the inferior lath 624 of brace can form the through hole 636 with contiguous its top 630, when using or dispose mirror assembly 601, this through hole is without any function and usage, but it can be formed to be convenient to the manufacturing of mirror assembly 601, for example with hook or other similar supporting member it is hung up when making or dispose mirror assembly or its parts by being convenient to.

As shown in Figure 7, each crossbeam 602 forms the slender member with general planar shape.It comprises the hole 638 near its top 640, and two holes 642 near its bottom 644.When assembling during truss 604, crossbeam 602 can be formed between sway brace 30 and two braces 38 triangular structure separately.

Truss 604 assemblings are as follows:

Two braces 38 are provided, the top 630 of each brace by fixedly passing each brace hole 632 and one the clamp structure (it can be for example high-strength anti-fatigue rivet) in the brace mounting hole 616 of sway brace be fixed to sway brace 30;

The bottom 626 of each brace 38 by fixedly passing each brace hole 634 and one clamp structure in the hole 642 that forms near the bottom 644 of crossbeam be fixed to crossbeam 602; And

Crossbeam 602 passes two of torque tube 28 slits 606 that relatively are shaped, then this crossbeam 602 by fixedly passing sway brace crossbeam mounting hole 618 and be fixed to sway brace 30 near the clamp structure in the hole 638 of top 640 formation of crossbeam.

Should understand, when assembling truss 604, if identical with the acute angle that forms between brace 38 and sway brace 30 in the sharp angle α that forms between the bottom margin 629b of side margins 628 and king plank 622, then the edge of two braces is with parallel to each other or flush, as being clear that from Fig. 8.

Adjacent truss 604 forms component truss along torque tube 28 with differing heights setting.In the sway brace 30 each is parallel to the sway brace of adjacent stringer structure and extends.In addition, the sway brace 30 of the truss 604 of component truss is along the parabolic path setting, outmost sway brace and torque tube spaced furthest, and innermost sway brace is with interval recently, that is, parabolical opening is towards catoptron 32.The para-curve of sway brace 30 is arranged and is made catoptron 32 be parabolic shape in the direction vertical with sway brace length.

As mentioned above, provide carriage 34, so that support bar 30 supporting reflex mirrors 32.These carriages can be made by any suitable material, for example stamping steel plate.Two types carriage is provided: center rest 34a, it is attached to the center of support bar 30; With side bracket 34b, it is attached to other point of support bar.(should be understood that in this article, center rest 34a and side bracket 34b are referred to as " carriage 34 " or " a plurality of carriage 34 ").

Shown in Fig. 9 A, each center rest 34a comprises the slight curving vertical riser 646 that merges with Upper gasket support section 648 and lower bottom base 650.Pad support section 648 vertically stretches out from vertical tube 646 usually, and comprises the through hole (not shown).Base 650 usually is parallel to vertical tube 646 and forms, and with respect to its horizontal-shift, so this base 650 approximately is arranged in below the hole that is formed at pad support section 648.Base 650 is provided with two through holes 652.Upper and lower supporting construction 654 is formed in the vertical tube 646, to strengthen center rest 34a.Supporting construction 654 interval that is perpendicular to one another, thus centered by carriage 34a certain flexibility is provided.Each supporting construction 654 comprises central vertical rib 656 and around the auxiliary rib 658 of the common U-shaped of its setting.Central rib 656 extends to the end of center rest 34a, that is, it passes the pad support section 648 on its top and the base 650 of its underpart.

Shown in Fig. 9 B, each side bracket 34b comprises the slight curving vertical riser 660 that merges with Upper gasket support section 662 and lower bottom base 664.Pad support section 662 vertically stretches out from vertical tube 660 usually, and comprises the through hole (not shown).Base 664 usually is parallel to vertical tube 660 and forms, and with respect to its horizontal-shift, so this base 664 approximately is arranged in below the hole that is formed at pad support section 662.Base 664 is provided with through hole 666.The vertically extending rib 668 that consists of supporting construction is formed in the vertical tube 660, to strengthen side bracket 34b.Rib 668 extends to the end of master carrier 34b, that is, it passes the pad support section 662 on its top and the base 664 of its underpart.

Each carriage 34 by fixedly pass its through hole 652,666 and the rivet of the carriage mounting hole 612 of sway brace be attached to sway brace 30.For the ease of bracket support catoptron 32, each carriage 34 comprises the pad 36 of the section of being located thereon.Get back to Fig. 9 A and Fig. 9 A, the spacer ring 672 that each pad 36 comprises plane 670 and stretches out downwards, this spacer ring 672 with several (for example, three) from wherein stretching out radially the rib 674 that extends.The hole (not shown) that vertically passes spacer ring 672 is provided.Provide and passed the hole pad 36 is fixed to the pad support section 648 of carriage 34,622 clamp structure (not shown).Upper surface 670 at each pad 36 provides bonding agent (it can be the commercial bonding agent of quick-setting high strength), in order to it is attached to catoptron 32.

Catoptron 32 is for having the plane component on high reflection surface.These catoptrons 32 can be made by ultra-clear glasses or any other suitable material.Each catoptron 32 can be rectangle, and it highly is that 3300 millimeters and width are 2300 millimeters.

These catoptrons 32 should have flexibility slightly at least, for example so that it is bent into aforesaid parabolic shape.The reflectivity of catoptron 32 can be more than 90%, and for example 92.5%.The back of catoptron can be provided with coating, and this coating is designed to protect it not to be subjected to the impact of rugged surroundings (for example desert Environment).

The technician in the field under the theme disclosed in 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

1. catoptron that the reflection unit that is used for the heliostat at central tower-type electricity generation station uses, it is characterized in that: described catoptron comprises at least one reflecting surface.

2. catoptron according to claim 1, it is characterized in that: it has rectangular shape, and it highly is that 3300 millimeters and width are 2300 millimeters.

3. catoptron according to claim 2, it is characterized in that: its weight is 74.59 kilograms.

4. each described catoptron in 3 according to claim 1, it is characterized in that: described reflecting surface has at least 92.5% reflectivity.

5. each described catoptron in 3 according to claim 1, it is characterized in that: its back side relative with the face with described reflecting surface is provided with protective finish.

6. heliostat that comprises according to claim 1 each described catoptron in 3.

7. heliostat according to claim 6, it is characterized in that: it comprises two described catoptrons.