CN102758702B - A kind of protective gear of solar energy Stirling engine heat absorber, guard method - Google Patents
A kind of protective gear of solar energy Stirling engine heat absorber, guard method Download PDFInfo
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- CN102758702B CN102758702B CN201210261424.4A CN201210261424A CN102758702B CN 102758702 B CN102758702 B CN 102758702B CN 201210261424 A CN201210261424 A CN 201210261424A CN 102758702 B CN102758702 B CN 102758702B
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- Prior art keywords
- cover plate
- heat absorber
- rotatingshaft
- stirling engine
- aperture
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/068—Devices for producing mechanical power from solar energy with solar energy concentrating means having other power cycles, e.g. Stirling or transcritical, supercritical cycles; combined with other power sources, e.g. wind, gas or nuclear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
- F24S40/10—Protective covers or shrouds; Closure members, e.g. lids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Abstract
The invention discloses a kind of protective gear of solar energy Stirling engine heat absorber, described Stirling engine comprises heat absorber, and described heat absorber has aperture (2); Described protective gear comprises at least one lighttight cover plate (3); described cover plate (3) and described heat absorber precursor (16) are rotationally connected; so that described cover plate (3) turn to the primary importance of blocking described aperture (2), or turn to the second place opening described aperture (2).Adopt this structure, it can be made to be in primary importance by upset cover plate when urgency, realize the object of blocking aperture, cut-out condenser converges in the luminous energy on heat absorption tube, plays the effect of protection heat absorption tube, greatly improves the working life of heat absorber.The present invention also discloses a kind of guard method of solar energy Stirling engine heat absorber.
Description
Technical field
The present invention relates to solar energy generation technology field, particularly relate to a kind of protective gear and guard method of solar energy Stirling engine heat absorber.
Background technique
Solar energy thermal-power-generating utilizes has more and more important society and economic implications.And a kind of important technology route that solar energy thermal-power-generating utilizes is dish-style Stirling system, namely the mode of dish-style condenser collocation Stirling engine is adopted, this mode has modularization very flexibly and disposes ability, very high photothermal conversion efficiency, and very high utilization factor, be thus subject to paying close attention to widely and paying attention to.
In dish-style Stirling solar heat generating system, there are a series of processes of luminous energy, heat energy, mechanical energy, electric energy conversion, and Stirling engine has been that luminous energy is to thermal energy, again to the core component of changes mechanical energy, its life-span and safety in operation directly determine the performance of whole launching system.
Heat absorber is one of critical component of solar energy Stirling engine, and its effect is the solar energy absorbing optical block convergence, and is translated into heat energy, then heat energy is passed to smoothly the working medium of the motor of heat absorption tube internal flow.Stirling engine working substance is generally the micro-molecular gas such as hydrogen or helium, and in order to improve the convection heat exchange ability of working medium and heat absorption tube quality inspection, often makes working medium have very high pressure (reaching as high as more than 15MPa).For the hot-end component of heat absorber, have that density of heat flow rate is large, heated part is uneven, bear the operating characteristics such as High Temperature High Pressure, working environment is very severe, therefore all has very harsh requirement to parameters such as the focal spot energy-distributing features that the material of hot-end component, Temperature Field Control, optical block produce.
For solar energy Stirling engine, once cause engine stop work due to some fault, need fast the focal spot that condenser is formed to be removed from aperture, otherwise a large amount of projects light energy is on heat absorption tube, and heat can not be taken away by the working medium of heat absorption tube inside smoothly, heat absorber hot-end component will be caused to be rapidly heated, in addition the working medium of Stirling engine is all generally the hydrogen or helium that thermal capacitance is very little, hot-end component can be rapidly heated, to the temperature of hot-end component be caused in a short period of time to exceed allowable value, even ablation, to scrap.More seriously, because hydrogen is inflammable gas, once heat absorption tube burns, the high pressure hydrogen in pipe can spray, and sets off an explosion, and causes serious consequence.
And for dish-style condenser, it is that power plant drive tracking action actuating mechanism to realize by a set of legacy systems such as retarders to day tracking action.Because the relative earth movement velocity of the sun is very slow, so the speed ratio of general retarder is very large, the rotating ratio power plant rotating speed also namely following the tracks of action actuating mechanism is much lower.Once need the focal spot by condenser produces to remove from heat absorber aperture, then need long time, even if improve the rotating speed of power plant, in short a few seconds, focal spot can not can be departed from completely the aperture of motor heat absorber, make motor in a safe condition.
In view of this; urgently for above-mentioned technical problem; look for another way and design a kind of protective gear of solar energy Stirling engine heat absorber, so that in case of emergency the quick luminous energy converged in by condenser on the heat absorption tube of heat absorber cuts off, avoid heat absorber heat up further and caused cause thermal damage.
Summary of the invention
The technical problem to be solved in the present invention is for providing a kind of protective gear and guard method of solar energy Stirling engine heat absorber; it can in case of emergency cut off by the quick luminous energy converged in by condenser on the heat absorption tube of heat absorber, avoids heat absorber heat up further and caused cause thermal damage.
For solving the problems of the technologies described above, the invention provides a kind of protective gear of solar energy Stirling engine heat absorber, described Stirling engine comprises heat absorber, and described heat absorber has aperture; Described protective gear comprises at least one lighttight cover plate, and described cover plate and described heat absorber precursor are rotationally connected, so that described cover plate turn to the primary importance of blocking described aperture, or turn to the second place opening described aperture.
Preferably, also comprise the rotatingshaft being parallel to described aperture end face, and the drive unit driving described rotatingshaft to rotate around its axis, described rotatingshaft is installed on by bearing in the bearing support that is fixedly connected with described heat absorber precursor, and described cover plate is fixedly connected with described rotatingshaft by connecting rod.
Preferably, the number of described rotatingshaft, described cover plate is multiple, the two connects one to one, multiple described rotatingshaft is in turn connected to form by cross axle head and the tail can the ring structure of synchronous axial system, and multiple described cover plate is when turning to described primary importance simultaneously, multiple described cover plate is spliced into the discoid plate blocking described aperture completely.
Preferably, described ring structure is closed ring structure, described drive unit comprises stepper motor, slide rail, sliding seat and is threadedly connected to the threaded stem of described sliding seat center, described slide rail is fixedly connected with described stepper motor, described threaded stem and described slide rail be arranged in parallel, the two ends of described threaded stem are fixedly connected with the live axle of described stepper motor respectively, be rotationally connected with described slide rail, and described sliding seat and described slide rail are slidably connected; Described sliding seat is also connected with collar, and the other end of described collar is rotatably connected to crank, and the other end of described crank is fixedly connected with one in multiple described rotatingshaft, to drive described rotatingshaft to rotate around himself axis.
Preferably, the ring structure that described ring structure is off, described drive unit is specially stepper motor, and the live axle of described stepper motor directly connects the one of two rotatingshafts at described ring structure two end part.
Preferably, described rotatingshaft comprises cloudy semiaxis and positive semiaxis, one end of described cloudy semiaxis and one end of described positive semiaxis to be coordinated with tenon by groove and are fixedly connected with, and the second U-shaped seat that the other end of the other end of described positive semiaxis, described cloudy semiaxis is respectively equipped with horizontally disposed first U-shaped seat, vertically arranges, to be connected with adjacent described rotatingshaft by described cross axle.
Preferably, be often also connected with transition axis by described cross axle between adjacent two described rotatingshafts, described transition axis is also installed in described bearing support by described bearing.
Preferably, the number of described cover plate and described rotatingshaft is one, and described cover plate is the discoid plate blocking described aperture completely, and described drive unit is described stepper motor, and described rotatingshaft is directly connected with the live axle of described stepper motor.
Preferably, the front side surface of described cover plate is also provided with reflector layer.
Preferably, described heat absorber precursor be circumferentially with degree of depth groove radially, described rotatingshaft is located in described groove, and the front side of described groove is provided with light shielding block, and light shielding block is provided with the passage for holding connecting rod, and described passage is communicated with described groove.
The invention provides a kind of protective gear of solar energy Stirling engine heat absorber; it comprises at least one lighttight cover plate; cover plate and heat absorber precursor are rotationally connected, so that cover plate turn to the primary importance of blocking aperture, or turn to the second place opening aperture.
Adopt this structure, during normal work, upset cover plate makes it be in the second place, because now aperture is opened, sunlight through condenser convergence can be incident upon the surface of the heat absorption tube being sealed with high pressure hydrogen or helium working medium by aperture, luminous energy becomes heat energy at heat absorption tube surface conversion, and passes to the working medium in heat absorption tube, makes raise in it to do work for motor.If once solar energy Stirling engine is in an emergency, can overturn cover plate fast makes it be in the first working position, because now cover plate blocks the aperture of heat absorber, and this cover plate is light tight, therefore this cover plate has cut off condenser and has converged in luminous energy on heat absorption tube, stops sunlight to continue to enter aperture.Meanwhile, deflection condenser, makes focal spot remove gradually from heat absorber, avoids heat absorber and continues heat up and caused cause thermal damage, substantially prolongs the physical life of heat absorber, ensure the job security of solar energy Stirling engine.
The present invention also provides a kind of guard method of solar energy Stirling engine heat absorber, and described Stirling engine comprises heat absorber, and described heat absorber has aperture; Described guard method comprises the steps:
1) arrange at least one lighttight cover plate at described protective gear, described cover plate and described heat absorber precursor are rotationally connected, so that described cover plate turn to the primary importance of blocking described aperture, or turn to the second place opening described aperture;
2) when described Stirling engine normally works, overturn described cover plate and make it be in the second place, so that described Stirling engine absorbs luminous energy;
When Stirling engine is in an emergency, the described cover plate of upset makes it be in the first working position, to stop sunlight to continue to enter aperture fast.
Because the protective gear of above-mentioned Stirling engine heat absorber has above-mentioned technique effect, therefore, the guard method corresponding with above-mentioned protective gear also should have identical technique effect, does not repeat them here.
Accompanying drawing explanation
Fig. 1 is the positive view of the first embodiment of the protective gear of solar energy Stirling engine heat absorber provided by the present invention, also show the phase diagram that cover plate is positioned at primary importance;
Fig. 2 is the first structural representation of the A direction view of Fig. 1, and shows the phase diagram that cover plate is positioned at primary importance;
Fig. 3 is the second structural representation of the A direction view of Fig. 1, and shows the phase diagram that cover plate is positioned at primary importance;
Fig. 4 is B-B the first structural representation to sectional view of Fig. 1;
Fig. 5 is the second structural representation of B-B to sectional view of Fig. 1;
Fig. 6 is that the C-C of Fig. 1 is to partial sectional view;
Fig. 7 is I place's partial enlarged view of Fig. 1;
Fig. 8 is in the phase diagram of the second place for the cover plate in protective gear shown in Fig. 1;
Fig. 9 is in the phase diagram of the second place for the cover plate in protective gear shown in Fig. 2;
Figure 10 is in the phase diagram of the second place for the cover plate in protective gear shown in Fig. 3;
Figure 11 is the positive view of the second embodiment of the protective gear of solar energy Stirling engine heat absorber provided by the present invention;
Figure 12 is the F direction view of Figure 11;
Figure 13 is that the E-E of Figure 11 is to sectional view;
Figure 14 is the decomposition axonometric drawing of the transmission shaft in Fig. 1, Figure 11;
The assembling schematic diagram that Figure 15 is transmission shaft shown in Figure 14;
Figure 16 is the positive view of the third embodiment of the protective gear of solar energy Stirling engine heat absorber provided by the present invention;
Figure 17 is the G direction view of Figure 16;
Figure 18 is that the H-H of Figure 16 is to sectional view.
Wherein, the reference character in Fig. 1 to Figure 18 and the corresponding relation between component names are:
1---the sunlight 2 of convergence---aperture 3---cover plate
4---connecting rod 5---crank 6---pull bars
7---bearing support 8---bearing 9---sliding seats
10---threaded stem 11---motor cabinet
13---stepper motor 14---body 15 after heat absorber---heat absorption tubes
16---heat absorber precursor 17---light shielding block 18---hinges
19---passage 20---rotatingshaft 21---cross axles
22---hinge pin 23---slide rail 24---transition axises
25---the U-shaped seats of live axle 26---half axle 27---second
28---cloudy semiaxis 29---back-up ring 30---positioning screwns
31---positive semiaxis 32---first U-shaped seat 33---draw-in grooves
34---tenon 35---groove 36---positioning holes
37---bearing
Embodiment
Core of the present invention is for providing a kind of protective gear for solar energy Stirling engine heat absorber and guard method; it can in case of emergency cut off by the quick luminous energy converged in by condenser on the heat absorption tube of heat absorber; avoid heat absorber to heat up further and caused cause thermal damage, strengthening the working life of heat absorber.
In order to make those skilled in the art understand technological scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1 and Fig. 8, Fig. 1 is the positive view of the first embodiment of the protective gear of solar energy Stirling engine heat absorber provided by the present invention, also show the phase diagram that cover plate 3 is positioned at primary importance; Fig. 8 is in the phase diagram of the second place for the cover plate 3 in protective gear shown in Fig. 1.
In a kind of embodiment, as illustrated in figures 1 and 8, the invention provides a kind of protective gear of solar energy Stirling engine heat absorber, Stirling engine comprises heat absorber, this heat absorber is the overall structure that after heat absorber precursor 16 and heat absorber, body 14 is formed, heat absorber precursor 16 is provided with aperture 2, and after heat absorber, body 14 is provided with heat absorption tube 15; Protective gear comprises at least one lighttight cover plate 3, and cover plate 3 and heat absorber precursor 16 are rotationally connected, so that cover plate 3 turn to the primary importance of blocking aperture 2, or turn to the second place opening aperture 2.
Adopt this structure, during normal work, upset cover plate 3 makes it be in the second place, because now aperture 2 is opened, sunlight 1 through condenser convergence can be incident upon the surface of the heat absorption tube 15 being sealed with high pressure hydrogen or helium working medium by aperture 2, luminous energy becomes heat energy at heat absorption tube 15 surface conversion, and passes to the working medium in heat absorption tube 15, makes raise in it to do work for motor.If once solar energy Stirling engine is in an emergency, can overturn cover plate 3 fast makes it be in the first working position, because now cover plate 3 blocks the aperture 2 of heat absorber, and this cover plate 3 is light tight, therefore this cover plate 3 has cut off condenser and has converged in luminous energy on heat absorption tube 15, stops sunlight to continue to enter aperture 2.Meanwhile, deflection condenser, makes focal spot remove gradually from heat absorber, avoids heat absorber and continues heat up and caused cause thermal damage, substantially prolongs the physical life of heat absorber, ensure the job security of solar energy Stirling engine.
The concrete structure of above-mentioned protective gear can also be set further.
In another kind of embodiment, above-mentioned protective gear can also comprise the rotatingshaft 20 being parallel to aperture 2 end face, and the drive unit driving rotatingshaft 20 to rotate around its axis.Heat absorber precursor 16 is provided with bearing 8, and bearing 8 is provided with bearing support 7, and rotatingshaft 20 is installed in this bearing support 7 by bearing 37, and cover plate 3 is fixedly connected with rotatingshaft 20 by connecting rod 4.
Adopt this structure, rotatingshaft 20 is formed by bearing 37, bearing support 7 and heat absorber precursor 16 and is rotatably connected, when needs cover plate 3 overturns, accessory drive is only needed to drive rotatingshaft 20 to rotate around himself axis, then drive connecting rod 4 and then drive cover plate 3 to rotate thereupon, simply, easily cover plate 3 can be turned to the second place from primary importance, realize the aperture 2 blocking or open heat absorber.Certainly, above-mentioned protective gear only for adopting rotatingshaft 20 to realize being rotatably connected of cover plate 3 and heat absorber precursor 16, can not also adopt other rotary way.
Please refer to Fig. 2 and Fig. 9, Fig. 2 is the first structural representation of the A direction view of Fig. 1, and shows the phase diagram that cover plate 3 is positioned at primary importance; Fig. 9 is in the phase diagram of the second place for the cover plate 3 in protective gear shown in Fig. 2.
In concrete scheme, as shown in Figure 2 and Figure 9, the number of above-mentioned rotatingshaft 20, cover plate 3 can be multiple, the two connects one to one, namely each rotatingshaft 20 all connects a cover plate 3 by a connecting rod 4, multiple rotatingshaft 20 is in turn connected to form by cross axle 21 head and the tail can the ring structure of synchronous axial system, and when multiple cover plate 3 turn to primary importance simultaneously, multiple cover plate 3 is spliced into the discoid plate blocking aperture 2 completely.
Adopt this structure, rotatingshaft 20 is driven to rotate by drive unit, whole ring structure can be driven to rotate, each rotatingshaft 20 in this ring structure drives the corresponding cover plate 3 connected with it to overturn, as shown in Figure 2, when each cover plate 3 all turn to primary importance, the split of multiple cover plate 3 is discoid plate, block aperture 2 completely, play the effect cut off and enter the luminous energy of heat absorption tube 15; As shown in Figure 9, when each cover plate 3 all turn to the second place, whole aperture 2 is opened, and makes heat absorption tube 15 continue to gather luminous energy.As can be seen here, the ring structure that above-mentioned multiple rotatingshaft 20 connects into can realize the synchronization motion of each cover plate 3, plays stable protective action to heat absorber.
It should be noted that, in above-mentioned embodiment, do not limit the number of cover plate 3 and rotatingshaft 20, as shown in Figure 2 and Figure 9,12 rotatingshafts 20 and cover plate 3 can be evenly set in the circumference of heat absorber precursor 16.In addition, as shown in figs. 3 and 10, Fig. 3 is the second structural representation of the A direction view of Fig. 1, and shows the phase diagram that cover plate 3 is positioned at primary importance; Figure 10 is in the phase diagram of the second place for the cover plate 3 in protective gear shown in Fig. 3; Also six rotatingshafts 20 and cover plate 3 can be evenly set in the circumference of heat absorber precursor 16.These evenly arrange and can ensure that each cover plate 3 uniform force, split are tight further for the cover plate 3 of even number, better to the occlusion effect of aperture 2.Certainly, can also adopt cover plate 3 and the rotatingshaft 20 of other numbers, user can select as required voluntarily.
Introduce the concrete form of above-mentioned ring structure and the drive unit of correspondence thereof below in two kinds of situation.
Please refer to Fig. 4 to Fig. 8, Fig. 4 is B-B the first structural representation to sectional view of Fig. 1; Fig. 5 is the second structural representation of B-B to sectional view of Fig. 1; Fig. 6 is that the C-C of Fig. 1 is to partial sectional view; Fig. 7 is I place's partial enlarged view of Fig. 1; Fig. 8 is in the phase diagram of the second place for the cover plate 3 in protective gear shown in Fig. 1.
The first situation, as shown above, above-mentioned ring structure can for closed ring structure, drive unit comprises stepper motor 13, slide rail 23, sliding seat 9 and is threadedly connected to the threaded stem 10 of sliding seat 9 center, slide rail 23 is fixedly connected with the motor cabinet 11 of stepper motor 13, threaded stem 10 and slide rail 23 be arranged in parallel, and the two ends of threaded stem 10 are fixedly connected with stepper motor 13 live axle 25 respectively, be rotationally connected with slide rail 23, and sliding seat 9 and slide rail 23 are slidably connected; Sliding seat 9 is also connected with collar 6 by hinge pin 22, and the other end of collar 6 is rotatably connected to crank 5 by hinge 18, and the other end of crank 5 is fixedly connected with one in multiple rotatingshaft 20, to drive rotatingshaft 20 to rotate around himself axis.
Adopt this structure, when needs upset cover plate 3, starting stepper motor 13 makes it rotate, the live axle 25 of stepper motor 13 drives the threaded stem 10 be fixedly connected with it to rotate, thus driving the sliding seat 9 be threaded with threaded stem 10 along slide rail 23 to-and-fro motion, the pull bar 6 on sliding seat 9 drives crank 5 to rotate, and then drives a rotation in multiple rotatingshaft 20, namely drive the ring mechanism unitary rotation of synchronization motion, realize the upset to multiple cover plate 3.As can be seen here, the drive unit of this structure only need be rotated clockwise by the live axle 25 of control step motor 13 or be rotated counterclockwise and cover plate 3 can be realized to turn to primary importance or the second place, overall driving process is simple, convenient, and power transmission process is compact, reliable.
Please refer to Figure 11 to Figure 13, Figure 11 is the positive view of the second embodiment of the protective gear of solar energy Stirling engine heat absorber provided by the present invention; Figure 12 is the F direction view of Figure 11; Figure 13 is that the E-E of Figure 11 is to sectional view.
The second situation, as shown above, a certain group of rotatingshaft 20 in above-mentioned ring structure is replaced with a half axle 26, the ring structure that such ring structure is off, drive unit is specially stepper motor 13, and the live axle 25 of stepper motor 13 directly connects the one of two rotatingshafts 20 at ring structure two end part.
Adopt this structure, when needs upset cover plate 3, start stepper motor 13, the live axle 25 of stepper motor 13 directly drives the rotatingshaft 20 of ring structure end to rotate, this rotatingshaft 20 drives rotatingshaft 20 adjacent with it to rotate, move successively, the rotatingshaft 20 realized in whole ring structure all drives cover plate 3 corresponding with it to overturn, and the aperture 2 of heat absorber is blocked or opens in final realization.As can be seen here, the driving device structure of this structure is more simple, has easy to operate, feature efficiently.
The concrete structure of above-mentioned rotatingshaft 20 can also be set further.
Please refer to Figure 14 and Figure 15, Figure 14 is the decomposition axonometric drawing of the transmission shaft in Fig. 1, Figure 11; The assembling schematic diagram that Figure 15 is transmission shaft shown in Figure 14.
In another kind of embodiment, as shown in Figure 14 and Figure 15, above-mentioned rotatingshaft 20 comprises cloudy semiaxis 28 and positive semiaxis 31, cloudy one end of semiaxis 28 and one end of positive semiaxis 31 are coordinated by groove 35 and tenon 34 and are fixedly installed, and the second U-shaped seat 27 that the other end of positive semiaxis 31, the other end of cloudy semiaxis 28 are respectively equipped with horizontally disposed first U-shaped seat 32, vertically arrange, to be connected with adjacent rotatingshaft 20 by cross axle 21.
In concrete installation process, tenon 34 on sun semiaxis 31 is plugged in the groove 35 on cloudy semiaxis 28, after positioning hole 36 alignment of the two, be screwed into wherein by positioning screwn 30, cloudy semiaxis 28 and positive semiaxis 31 be connected, the outer wall of the two connection part coordinates with bearing 37, and back-up ring 29 is set in bearing 37 both sides, this back-up ring 29 is in the draw-in groove 33 of two semiaxis respectively, and bearing 37 is in bearing support 7, and bearing support 7 is fixedly connected with heat absorber precursor 16 by bearing 8.This cooperation can realize being fixedly connected with of cloudy semiaxis 28 and positive semiaxis 31, and the U-shaped seat 27 of first of rotatingshaft 20 two ends the U-shaped seat 32, second can realize the connection with cross axle 21 easily, ensure the transmission of power of the cross axle 21 that rotatingshaft 20 is adjacent, and then form the ring structure of synchronous axial system.
Certainly, above-mentioned rotatingshaft is not limited in said structure, and every rotatingshaft 20 that can connect into ring structure by cross axle 21 all should be worked as and be belonged in protection scope of the present invention.
More specifically in scheme, as shown in Figure 4, often adjacent two rotatingshafts 20 in ring structure are directly connected by cross axle 21, and this structure is suitable for the protective gear that number is more, setting is closeer of cover plate 3.In addition; as shown in Figure 5; often also be connected with transition axis 24 by cross axle 21 between adjacent two rotatingshafts 20; transition axis 24 is also installed in bearing support 7 by bearing 37; this structure can realize the transition connection of often adjacent two rotatingshafts 20 by transition axis 24; ensure to form the arching trajectory of whole ring structure, this structure is suitable for the less protective gear of the number of cover plate 3.User can select according to actual needs voluntarily.
Please refer to Figure 16 to Figure 18, Figure 16 is the positive view of the third embodiment of the protective gear of solar energy Stirling engine heat absorber provided by the present invention; Figure 17 is the G direction view of Figure 16; Figure 18 is that the H-H of Figure 16 is to sectional view.
In another kind of embodiment, as shown in Figure 16 to Figure 18, the number of above-mentioned cover plate 3 and rotatingshaft 20 can also be one, and cover plate 3 is the discoid plate blocking aperture 2 completely, drive unit is stepper motor 13, and rotatingshaft 20 is directly connected with the live axle 25 of stepper motor 13.
Adopt this structure, when needs upset cover plate 3, starting stepper motor 13 makes it rotate, the live axle 25 of stepper motor 13 drives rotatingshaft 20 to rotate, thus directly drive cover plate 3 to overturn, realize the aperture 2 blocking or open heat absorber, avoid in case of emergency burning out heat absorber, extend the working life of heat absorber.
In another kind of embodiment, the front side surface of above-mentioned cover plate 3 is also provided with reflector layer.Like this, in case of emergency, cover plate 3 can not only block the aperture 2 of heat absorber, plays a protective role to heat absorber; The sunlight 1 of convergence can also reflect away by the reflector layer on cover plate 3 surface, avoids due to the too strong generation to phenomenons such as the ablations that cover plate 3 causes of light, further increases working stability and the reliability of protective gear.
In another kind of embodiment, above-mentioned heat absorber precursor 16 be circumferentially with degree of depth groove radially, bearing support 7, bearing 37 and rotatingshaft 20 are all located in this groove, the front side of this groove is also provided with light shielding block 17, light shielding block 17 is provided with the passage 19 for arranging connecting rod 4 and/or crank 5, and passage 19 is communicated with groove.
Particularly; when protective gear adopts cover plate 3 and the rotatingshaft 20 of multiple number; above-mentioned groove can be specially the circular groove be located on heat absorber precursor 16; the radial direction of multiple bearing support 7, bearing 37 and cover plate 3 annularly groove is evenly arranged, and the crank 5 connected with each cover plate 3, connecting rod 4 is corresponding is arranged in passage 19.When protective gear adopts a cover plate 3 and a rotatingshaft 20; above-mentioned groove can be only a bit of straight-line groove or curve bath; for holding bearing support 7, bearing 37 and rotatingshaft 20, and the connecting rod 4 connecting cover plate 3 and rotatingshaft 20 is located in the passage 19 of light shielding block 17.
Adopt this structure; light shielding block 17 on front side of groove 35 can play a protective role to assemblies such as bearing 37, rotatingshafts 20; even if the foozle due to condenser reflective surface makes part sunlight can not enter the aperture 2 of heat absorber; also can be blocked block 17 to tackle; and the temperature of the parts such as bearing support 7, rotatingshaft 20 can not be made too high, strengthen the protected effect of protective gear further.
It should be noted that, the noun of locality " forward and backward " occurred herein to refer in Fig. 1 direction from right to left, from left to right respectively, and the noun of locality " radial direction " refers to the direction of upper downward-extension in Fig. 1; Should be appreciated that the appearance of these nouns of locality is that benchmark is set up with Figure of description, their appearance should not affect protection scope of the present invention.
In addition, the present invention also provides a kind of guard method of solar energy Stirling engine heat absorber, and Stirling engine comprises heat absorber, and heat absorber has aperture 2; Guard method comprises the steps:
S11: at least one lighttight cover plate 3 is set at protective gear, cover plate 3 and heat absorber precursor 16 are rotationally connected, so that cover plate 3 turn to the primary importance of blocking aperture 2, or turn to the second place opening aperture 2;
S12: when Stirling engine normally works, upset cover plate 3 makes it be in the second place, so that Stirling engine absorbs luminous energy;
When Stirling engine is in an emergency, upset cover plate 3 makes it be in the first working position, to stop sunlight to continue to enter aperture 2 fast.
Above the protective gear of a kind of solar energy Stirling engine heat absorber provided by the present invention and guard method are described in detail.Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (9)
1. a protective gear for solar energy Stirling engine heat absorber, described Stirling engine comprises heat absorber, and described heat absorber has aperture (2); It is characterized in that, described protective gear comprises at least one lighttight cover plate (3), described cover plate (3) and described heat absorber precursor (16) are rotationally connected, so that described cover plate (3) turn to the primary importance of blocking described aperture (2) completely, or turn to the second place opening described aperture (2);
Also comprise the rotatingshaft (20) being parallel to described aperture (2) end face, and the drive unit driving described rotatingshaft (20) to rotate around its axis, described rotatingshaft (20) is installed on by bearing (37) in the bearing support (7) that is fixedly connected with described heat absorber precursor (16), and described cover plate (3) is fixedly connected with described rotatingshaft (20) by connecting rod (4);
The number of described rotatingshaft (20), described cover plate (3) is multiple, the two connects one to one, multiple described rotatingshaft (20) is in turn connected to form by cross axle (21) head and the tail can the ring structure of synchronous axial system, and multiple described cover plate (3) is when turning to described primary importance simultaneously, multiple described cover plate (3) is spliced into the discoid plate blocking described aperture (2) completely.
2. the protective gear of solar energy Stirling engine heat absorber according to claim 1, it is characterized in that, described ring structure is closed ring structure, described drive unit comprises stepper motor (13), slide rail (23), sliding seat (9) and be threadedly connected to the threaded stem (10) of described sliding seat (9) center, described slide rail (23) is fixedly connected with described stepper motor (13), described threaded stem (10) and described slide rail (23) be arranged in parallel, the two ends of described threaded stem (10) are fixedly connected with the live axle (25) of described stepper motor (13) respectively, be rotationally connected with described slide rail (23), described sliding seat (9) and described slide rail (23) are slidably connected, described sliding seat (9) is also connected with collar (6), the other end of described collar (6) is rotatably connected to crank (5), the other end of described crank (5) is fixedly connected with one in multiple described rotatingshaft (20), to drive described rotatingshaft (20) to rotate around himself axis.
3. the protective gear of solar energy Stirling engine heat absorber according to claim 1; it is characterized in that; the ring structure that described ring structure is off; described drive unit is specially stepper motor (13), and the live axle (25) of described stepper motor (13) directly connects the one of two rotatingshafts (20) at described ring structure two end part.
4. the protective gear of the solar energy Stirling engine heat absorber according to any one of claim 1-3, it is characterized in that, described rotatingshaft (20) comprises cloudy semiaxis (28) and positive semiaxis (31), one end of described cloudy semiaxis (28) is coordinated and is fixedly connected with by groove (35) with tenon (34) with one end of described positive semiaxis (31), and the other end of described positive semiaxis (31), the other end of described cloudy semiaxis (28) is respectively equipped with horizontally disposed first U-shaped seat (32), second U-shaped seat (27) of vertical setting, to be connected with adjacent described rotatingshaft (20) by described cross axle (21).
5. the protective gear of solar energy Stirling engine heat absorber according to claim 4; it is characterized in that; often also be connected with transition axis (24) by described cross axle (21) between adjacent two described rotatingshafts (20), described transition axis (24) is also installed in described bearing support (7) by described bearing (37).
6. the protective gear of solar energy Stirling engine heat absorber according to claim 1; it is characterized in that; the number of described cover plate (3) and described rotatingshaft (20) is one; described cover plate (3) is the discoid plate blocking described aperture (2) completely; described drive unit is described stepper motor (13), and described rotatingshaft (20) is directly connected with the live axle (25) of described stepper motor (13).
7. the protective gear of the solar energy Stirling engine heat absorber according to any one of claim 1-3, is characterized in that, the front side surface of described cover plate (3) is also provided with reflector layer.
8. the protective gear of the solar energy Stirling engine heat absorber according to any one of claim 1-3; it is characterized in that; described heat absorber precursor (16) be circumferentially with degree of depth groove radially; described rotatingshaft (20) is located in described groove; the front side of described groove is provided with light shielding block (17); light shielding block (17) is provided with the passage (19) for holding connecting rod (4), and described passage (19) is communicated with described groove.
9. a guard method for solar energy Stirling engine heat absorber, described Stirling engine comprises heat absorber, and described heat absorber has aperture (2); It is characterized in that, described guard method comprises the steps:
1) at least one lighttight cover plate (3) is set at protective gear, described cover plate (3) and described heat absorber precursor (16) are rotationally connected, so that described cover plate (3) turn to the primary importance of blocking described aperture (2) completely, or turn to the second place opening described aperture (2);
The rotatingshaft (20) being parallel to described aperture (2) end face is also set, and the drive unit driving described rotatingshaft (20) to rotate around its axis, described rotatingshaft (20) is installed on by bearing (37) in the bearing support (7) that is fixedly connected with described heat absorber precursor (16), and described cover plate (3) is fixedly connected with described rotatingshaft (20) by connecting rod (4);
The number of described rotatingshaft (20), described cover plate (3) is multiple, the two connects one to one, multiple described rotatingshaft (20) is in turn connected to form by cross axle (21) head and the tail can the ring structure of synchronous axial system, and multiple described cover plate (3) is when turning to described primary importance simultaneously, multiple described cover plate (3) is spliced into the discoid plate blocking described aperture (2) completely;
2) when described Stirling engine normally works, overturn described cover plate (3) and make it be in the second place, so that described Stirling engine absorbs luminous energy;
When Stirling engine is in an emergency, the described cover plate of upset (3) makes it be in the first working position, to stop sunlight to continue to enter aperture (2) fast.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210261424.4A CN102758702B (en) | 2012-07-26 | 2012-07-26 | A kind of protective gear of solar energy Stirling engine heat absorber, guard method |
| PCT/CN2013/080090 WO2014015812A1 (en) | 2012-07-26 | 2013-07-25 | Protection device and protection method of heat absorber of solar stirling engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210261424.4A CN102758702B (en) | 2012-07-26 | 2012-07-26 | A kind of protective gear of solar energy Stirling engine heat absorber, guard method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102758702A CN102758702A (en) | 2012-10-31 |
| CN102758702B true CN102758702B (en) | 2015-08-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210261424.4A Expired - Fee Related CN102758702B (en) | 2012-07-26 | 2012-07-26 | A kind of protective gear of solar energy Stirling engine heat absorber, guard method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102758702B (en) |
| WO (1) | WO2014015812A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758702B (en) * | 2012-07-26 | 2015-08-26 | 湘电集团有限公司 | A kind of protective gear of solar energy Stirling engine heat absorber, guard method |
| CN103353182A (en) * | 2013-07-03 | 2013-10-16 | 湘电集团有限公司 | Protective device of solar Stirling engine heat absorber |
| CN103604230B (en) * | 2013-11-26 | 2016-09-07 | 湘电集团有限公司 | A kind of protection device of Dish solar thermal power system |
| CN104390373B (en) * | 2014-10-27 | 2017-07-07 | 西安航空动力股份有限公司 | Dish-style Stirling engine heat collector port heat shield arrangement and its application in solar power generation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475538A (en) * | 1983-11-30 | 1984-10-09 | United Stirling Ab | Window for solar receiver for a solar-powered hot gas engine |
| US4502466A (en) * | 1983-11-30 | 1985-03-05 | United Stirling Ab | Protective shield for a solar energy concentrator |
| CN101014810A (en) * | 2004-07-06 | 2007-08-08 | 舍奇实验室－阳光氢能量公司 | Solar energy control |
| WO2008000282A1 (en) * | 2006-06-26 | 2008-01-03 | R & B Energy Research Sarl | Protective device for a solar panel collector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004332672A (en) * | 2003-05-12 | 2004-11-25 | Taiyoko Kenkyusho:Kk | Stirling engine power-generating device using solar light and heat |
| US20120067338A1 (en) * | 2009-09-16 | 2012-03-22 | 101 Celsius, Llc | Solar energy conversion system |
| CN102758702B (en) * | 2012-07-26 | 2015-08-26 | 湘电集团有限公司 | A kind of protective gear of solar energy Stirling engine heat absorber, guard method |
-
2012
- 2012-07-26 CN CN201210261424.4A patent/CN102758702B/en not_active Expired - Fee Related
-
2013
- 2013-07-25 WO PCT/CN2013/080090 patent/WO2014015812A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475538A (en) * | 1983-11-30 | 1984-10-09 | United Stirling Ab | Window for solar receiver for a solar-powered hot gas engine |
| US4502466A (en) * | 1983-11-30 | 1985-03-05 | United Stirling Ab | Protective shield for a solar energy concentrator |
| CN101014810A (en) * | 2004-07-06 | 2007-08-08 | 舍奇实验室－阳光氢能量公司 | Solar energy control |
| WO2008000282A1 (en) * | 2006-06-26 | 2008-01-03 | R & B Energy Research Sarl | Protective device for a solar panel collector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014015812A1 (en) | 2014-01-30 |
| CN102758702A (en) | 2012-10-31 |
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