CN111537231A - Wind generating set's thermal radiation analogue means and have its system - Google Patents
Wind generating set's thermal radiation analogue means and have its system Download PDFInfo
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Abstract
The invention relates to the technical field of power generation, in particular to a thermal radiation simulation device of a wind generating set and a system with the thermal radiation simulation device. A thermal radiation simulation device of a wind generating set comprises: the first bracket is used for being assembled above a generator of the wind generating set; and the at least one solar radiation mechanism is fixed on the first bracket and used for simulating the solar radiation environment where the generator is positioned. Set up first support through the top at the generator, fixed solar radiation mechanism on the first support can simulate the solar radiation environment of the different geographical position, different time quantums that the generator was located to test the performance under the solar radiation environment of wind generating set place difference, and the structure is simpler, the assembly of being convenient for.
Description
Technical Field
The invention relates to the technical field of power generation, in particular to a thermal radiation simulation device of a wind generating set and a system with the thermal radiation simulation device.
Background
With the increasing of the capacity of a single machine of the generator set, the installation environment of the generator set becomes severer, and the thermal problems of the whole machine, subsystems and subcomponents become great challenges for the design and operation of the generator set. The wind generating set is taken as an example for explanation, in terms of the capacity of a single machine of the set, the capacity level of the single machine is developed to be higher than 8MW and 10MW, the heat production of the set per se reaches hundreds KW or MW level, and the huge heat consumption becomes the largest restriction factor for the temperature rise control of the whole machine, a subsystem and subcomponents; as for the operation environment of the machine assembly machine, the temperature environment of a high-temperature area exceeds 40 ℃, the temperature rise indexes of all subsystems and parts become key restriction factors for ensuring the operation of the machine set in the high-temperature environment.
The wind generating set comprises components such as blades, a hub, a generator, a cabin, a tower and the like, wherein a solar radiation part is a part which contributes to the heat load of the generator except for the heat generated by the generator, so that the influence of external solar radiation on the temperature of equipment needs to be considered from the beginning of the design of the wind generating set, and the wind generating set can have good environmental adaptability and reliability; meanwhile, the contribution degree of external solar radiation to the heat load of the wind generating set is different at different geographical positions, different time periods and different time periods in a day, and further the influence on the temperature distribution of the whole wind generating set is different, so that the performance of the wind generating set is tested by simulating the solar radiation of the wind generating set, and the problem to be solved is urgently solved by the design optimization of the wind generating set.
Disclosure of Invention
The embodiment of the invention mainly aims to provide a thermal radiation simulation device of a wind generating set and a system with the thermal radiation simulation device, wherein the thermal radiation simulation device can be used for carrying out solar radiation simulation on a generator.
In a first aspect, a thermal radiation simulation device of a wind turbine generator system is provided, which includes:
the first bracket is used for being assembled above a generator of the wind generating set;
and the at least one solar radiation mechanism is fixed on the first bracket and used for simulating the solar radiation environment where the generator is positioned.
Set up first support through the top at the generator, fixed solar radiation mechanism on the first support can simulate the solar radiation environment of the different geographical position, different time quantums that the generator was located to test the performance under the solar radiation environment of wind generating set place difference, and the structure is simpler, the assembly of being convenient for.
Optionally, the solar radiation mechanism comprises:
a first body;
the first light source is arranged at the top of the first body;
at least one filter lens is arranged between the first light source and the generator.
Through setting up solar radiation mechanism to including first light source and at least one filter lens, the top of first body is located to first light source, shines the generator from the top of generator, sets up at least one filter lens between generator and first light source, can filter the light of first light source transmission for shine more to match with real sunlight on the generator, better environment of building the sunlight.
Optionally, a plurality of filter lenses are arranged below the first light source; further comprising: the mixing portion is arranged at the bottom of the first body, is positioned below the filter lenses and is used for mixing light emitted by the filter lenses and transmitting the mixed light to the generator.
Through setting up the filter lens into a plurality ofly, can filter out a plurality of light of first light source respectively to on transmitting the generator after mixing each light, because real sunlight is the complex of multiple light also, make the light of shining on the generator can be close with real sunlight as far as possible, better environment of building the sunlight.
Optionally, a plurality of the filter lenses are sequentially arranged along the propagation direction of the light emitted by the first light source.
The plurality of filter lenses include an ultraviolet filter lens, a visible light filter lens, and an infrared filter lens.
Since most of the solar radiation spectrum is ultraviolet rays, visible light and infrared rays, the mixed light rays emitted by the first light source and irradiated to the generator are matched with the sunlight more by arranging the plurality of filter lenses to include the ultraviolet filter lens, the visible light filter lens and the infrared filter lens.
Optionally, a plane perpendicular to the propagation direction of the light emitted by the first light source is selected to make a cross section of the first body, and the ultraviolet filter lens, the visible light filter lens and the infrared filter lens are sequentially arranged along the outward direction of the center of the cross section.
The first body is provided with a plane perpendicular to the propagation direction of light emitted by the first light source, and the plane is used as a cross section of the first body, and the ultraviolet light filter lens, the visible light filter lens and the infrared light filter lens are sequentially arranged along the outward direction of the center of the cross section.
Optionally, the first body is a cylindrical structure.
Through setting up first body into cylindric structure, the route of light in first body also is cylindric, more accords with the propagation path of real sunlight.
Optionally, the number of the solar radiation mechanisms is multiple, and the multiple solar radiation mechanisms are independently arranged on the first support.
Through setting up solar radiation mechanism into a plurality ofly, and a plurality of solar radiation mechanism mutually independent locate on the first support for each solar radiation mechanism can control alone in the course of the work, the maintenance in the later stage of being convenient for.
Optionally, the number of the solar radiation mechanisms is multiple, and every two or every four of the solar radiation mechanisms are connected to each other and arranged on the first support in a group.
Through setting up solar radiation mechanism into a plurality ofly, and per two solar radiation mechanisms or per four solar radiation mechanism interconnect, locate on the first support in groups for each solar radiation mechanism can control in groups in the course of the work, and need not every solar radiation mechanism and all dispose the control box during earlier stage installation, makes overall structure simpler.
Optionally, the first support is in a fan ring structure.
Through setting up first support as fan ring structure for solar radiation mechanism is wider in the scope of setting up on first support, except can sending out the sunlight directly over the generator, can also radiate the sunlight to the both sides of generator, and is closer with real solar radiation environment.
Optionally, an included angle between the first edge of the fan ring structure and the second edge of the fan ring structure is 150 °, and an included angle between the first edge of the fan ring structure and a horizontal plane is 15 °.
The included angle between the first edge and the second edge of the fan ring structure is set to be 150 degrees, and the included angle between the first edge of the fan ring structure and the horizontal plane is 15 degrees, so that the sunlight radiation range is greatly attached to the generation mechanism of real solar radiation.
Optionally, the heat radiation simulation device of the wind turbine generator system further includes:
a second bracket for fitting under the generator;
and the ground radiation mechanism is fixed on the second support and used for simulating the ground radiation environment where the generator is located.
Set up the second support through the below at the generator, fixed ground radiation mechanism on the second support, can simulate the ground radiation environment that the generator was located, because in the generator in-service use process, except that daytime solar radiation can produce the influence to its performance, still can receive ground radiation's influence at night, therefore, set up ground radiation mechanism in the below of generator simultaneously, can simulate the solar radiation environment and the ground radiation environment of generator simultaneously, be convenient for test the performance of generator under two kinds of radiation environment.
Optionally, the ground radiation mechanism comprises:
a second body;
the second light source is arranged at the end part of the second body far away from the generator;
and the infrared filter lens is arranged on one side of the second light source close to the generator and is used for transmitting the light emitted by the infrared filter lens to the generator.
Through setting up ground radiation mechanism to include second light source and infrared ray filter lens, because the earth's surface temperature is lower relatively, the energy of ground radiation mainly concentrates on the infrared ray region, consequently directly sets up infrared ray filter lens on ground radiation mechanism, when can simulate real ground radiation, the structure is simpler.
Optionally, the second support is in a fan ring structure.
Through setting up the second support into the fan ring structure for ground radiation mechanism is wider in the scope of setting up on the second support, except radiating under the generator, can also radiate the both sides of generator, and is closer with real ground radiation environment.
Optionally, the heat radiation simulation device of the wind turbine generator system further includes:
and the lifting translation structure is fixedly connected with the first support and is used for driving the first support to do lifting motion or horizontal motion relative to the generator.
Through setting up the lift translation structure with first support fixed connection, can drive first support and make elevating movement or horizontal direction motion relatively the generator for first support can the generator of more models of adaptation and size, has improved heat radiation analogue means's suitability.
Optionally, the heat radiation simulation device of the wind turbine generator system further includes:
the input module is used for acquiring input information, wherein the input information comprises time and/or longitude and latitude and/or weather information;
the controller comprises a calculation module and a control regulation module; the computing module is connected with the input module and is used for computing and generating solar radiation intensity and/or ground radiation intensity according to the input information; the control and regulation module is connected with the calculation module and is used for regulating the radiation intensity of a first light source of the solar radiation mechanism according to the solar radiation intensity; and/or adjusting the radiation intensity of the second light source of the ground radiation mechanism according to the ground radiation intensity.
In a second aspect, a system with a thermal radiation simulator is provided, comprising a generator and a thermal radiation simulator as described above.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a heat radiation simulation device of a wind turbine generator system according to an embodiment of the present invention;
FIG. 2 is a distribution diagram of a solar radiation mechanism in an embodiment of the present invention;
FIG. 3 is a distribution diagram of a solar radiation mechanism in another embodiment of the present invention;
FIG. 4 is a distribution diagram of a solar radiation mechanism in another embodiment of the present invention;
FIG. 5 is a cross-sectional view of a solar radiation mechanism in an embodiment of the present invention;
FIG. 6 is a cross-sectional view of a solar radiation mechanism in an embodiment of the present invention;
FIG. 7 is a cross-sectional view of a ground radiation mechanism in an embodiment of the present invention;
FIG. 8 is a cross-sectional view of a ground radiation mechanism in an embodiment of the invention;
fig. 9 is a partial structural view of a system having a heat radiation simulation apparatus in an embodiment of the present invention;
fig. 10 is a control schematic diagram of a heat radiation simulation apparatus of a wind turbine generator set in an embodiment of the present invention;
fig. 11 is a schematic view of solar radiation.
Description of reference numerals:
1-a first scaffold; 2-a solar radiation mechanism; 3-a first body; 4-a first light source; 5-a mixing section; 6-ultraviolet filter lens; 7-visible light filter lens; 8-infrared filter lens; 9-first side; 10-a second edge; 11-a second support; 12-ground radiation means; 13-a second body; 14-a second light source; 15-a delivery section; 16-a first support; 17-adjusting the stent; 18-a second seat; 19-a generator; 20-a nacelle; 21-a thermal environment simulation device; 22-a calculation module; 23-controlling the regulating module; 24-input module.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 9, the present embodiment provides a heat radiation simulation apparatus for a wind turbine generator system, including: a first support 1 and a solar radiation mechanism 2.
A first bracket 1 for being assembled above a generator 19 of a wind generating set; and a plurality of solar radiation mechanisms 2 which are fixed on the first bracket 1 at intervals and used for simulating the solar radiation environment of the generator 19. Specifically, a plurality of solar radiation mechanisms 2 can be uniformly arranged on the first support 1, the overall size of the plurality of solar radiation mechanisms 2 is close to that of the first support 1, for convenience of assembly, a plurality of through holes can be arranged on the first support 1, and one solar radiation mechanism 2 is clamped in each through hole. Through setting up first support 1 in the top of generator 19, fixed solar radiation mechanism 2 on first support 1 can simulate the solar radiation environment of the different geographical position, different time quantums that generator 19 was located to test the performance of wind generating set under the solar radiation environment of difference, and the structure is simpler, the assembly of being convenient for. As an alternative embodiment, the plurality of solar radiation mechanisms 2 may be fixed to the first support 1 at intervals, and may be disposed non-uniformly. As an alternative embodiment, the solar radiation mechanism 2 may be provided as one unit and disposed at the center of the first frame 1, and in this case, the size of the solar radiation mechanism 2 may be set to be large and substantially close to the size of the first frame 1.
As shown in fig. 5, the solar radiation mechanism 2 in the present embodiment includes: a first body 3; the first light source 4 is arranged at the top of the first body 3; at least one filter lens is arranged between the first light source 4 and the generator 19. By arranging the solar radiation mechanism 2 to comprise the first light source 4 and at least one filter lens, the first light source 4 is arranged at the top of the first body 3, the generator 19 is illuminated from the upper part of the generator 19, and the at least one filter lens is arranged between the generator 19 and the first light source 4, light emitted by the first light source 4 can be filtered, so that the light irradiated on the generator 19 is more matched with real sunlight, and the environment of the sunlight is better created.
Specifically, a plurality of filter lenses are arranged below the first light source 4; the solar radiation mechanism 2 further comprises a mixing part 5, which is arranged at the bottom of the first body 3, is positioned below the plurality of filter lenses, and is used for mixing the light emitted by the plurality of filter lenses and transmitting the mixed light to the generator 19. The filter lenses are arranged in a plurality of manners, so that a plurality of light rays of the first light source 4 can be filtered out respectively, and the mixed light rays are transmitted to the power generator 19, and the real sunlight is also a compound of the light rays, so that the light irradiated on the power generator 19 can be close to the real sunlight as much as possible, and the environment of the sunlight is better created. As an alternative embodiment, the filter may be provided as one filter, for example, the filter corresponding to the light with the largest ratio in the solar radiation spectrum is selected, or the filter corresponding to other light in the solar radiation spectrum is also selected.
The plurality of filter lenses in the present embodiment are sequentially arranged along the propagation direction of the light emitted from the first light source 4. As an alternative embodiment, a plurality of filter lenses may be arranged in parallel on the same horizontal plane on the first body 3.
Since the vast majority of the energy in the solar radiation spectrum is ultraviolet, visible, and infrared, with ultraviolet (wavelength < 0.38 μm) accounting for about 7%, visible (wavelength range 0.38-0.78 μm) accounting for about 47%, and infrared (wavelength > 0.78 μm) accounting for about 46%, the plurality of filter lenses in this embodiment include an ultraviolet filter lens 6, a visible filter lens 7, and an infrared filter lens 8. By arranging a plurality of filter lenses including the ultraviolet filter lens 6, the visible light filter lens 7 and the infrared filter lens 8, the mixed light of the light emitted from the first light source 4 and irradiated onto the generator 19 is more matched with the sunlight.
As shown in fig. 6, a plane perpendicular to the propagation direction of the light emitted by the first light source 4 is selected to make a cross section of the first body 3, an ultraviolet filter lens 6, a visible light filter lens 7 and an infrared filter lens 8 are sequentially arranged along the outward direction of the center of the cross section, and the ratio of the cross section areas of the ultraviolet filter lens 6, the visible light filter lens 7 and the infrared filter lens 8 is 7: 47: 46. by making a cross section of the first body 3 with a plane perpendicular to the propagation direction of the light emitted from the first light source 4, and sequentially arranging the ultraviolet filter lens 6, the visible light filter lens 7, and the infrared filter lens 8 in the direction outward from the center of the cross section, the ratio of ultraviolet light, visible light, and infrared light is relatively small, so that the ratio of ultraviolet light, visible light, and infrared light is relatively convenient to set.
In order to better conform to the real sunlight propagation path, the first body 3 in this embodiment has a cylindrical structure. As an alternative embodiment, the first body 3 may have a rectangular parallelepiped structure, a square structure, or another structure.
As shown in fig. 2, a plurality of solar radiation mechanisms 2 in the present embodiment are independently provided on the first frame 1, and each solar radiation mechanism 2 is connected to a control line for controlling the operation thereof. Through setting up solar radiation mechanism 2 to a plurality ofly, and a plurality of solar radiation mechanism 2 locate first support 1 mutually independently for each solar radiation mechanism 2 can control alone in the course of the work, the maintenance of the later stage of being convenient for.
As an alternative embodiment, as shown in fig. 3 and 4, every two solar radiation mechanisms 2 or every four solar radiation mechanisms 2 or every three solar radiation mechanisms 2 or more solar radiation mechanisms 2 may be connected to each other and set on the first frame 1. Through setting up solar radiation mechanism 2 into a plurality ofly, and per two solar radiation mechanisms 2 or per four solar radiation mechanism 2 interconnect locate first support 1 in groups for each solar radiation mechanism 2 can be controlled in groups in the course of the work, and need not every solar radiation mechanism 2 and all dispose the control box when installing earlier stage, makes overall structure simpler.
The first support 1 in this embodiment is a fan-ring structure. Through setting up first support 1 to the fan ring structure for solar radiation mechanism 2 is wider in the scope of setting up on first support 1, except can sending out the sunlight directly over generator 19, can also radiate the sunlight to generator 19's both sides, and is closer with real solar radiation environment.
Specifically, the angle between the first side 9 of the fan ring structure and the second side 10 of the fan ring structure is 150 °, and the angle between the first side 9 of the fan ring structure and the horizontal plane is 15 °. The included angle between the first edge 9 and the second edge 10 of the fan ring structure is set to be 150 degrees, and the included angle between the first edge 9 of the fan ring structure and the horizontal plane is 15 degrees, so that the sunlight radiation range is greatly attached to the generation mechanism of real solar radiation. As an alternative embodiment, the first side 9 and the second side 10 of the fan ring structure may be arranged at other angles.
The thermal radiation simulation device in this embodiment includes a ground radiation simulation device in addition to the solar radiation simulation device, wherein the ground radiation simulation device includes: a second bracket 11 for fitting under the generator 19; and a plurality of ground radiation mechanisms 12 which are fixed on the second bracket 11 at intervals and used for simulating the ground radiation environment of the generator 19. Specifically, a plurality of ground radiation mechanisms 12 may be uniformly disposed on the second support 11, the overall size of the plurality of ground radiation mechanisms 12 is similar to the size of the second support 11, for convenience of assembly, a plurality of through holes may be disposed on the second support 11, and one ground radiation mechanism 12 is clamped in each through hole. Through setting up second support 11 in the below at generator 19, fixed ground radiation mechanism 12 on second support 11, can simulate the ground radiation environment that generator 19 was located, because in the actual use of generator 19, except that the solar radiation of daytime can produce the influence to its performance, still can receive the influence of ground radiation at night, consequently, set up ground radiation mechanism 12 in the below of generator 19 simultaneously, can simulate the solar radiation environment and the ground radiation environment of generator 19 simultaneously, be convenient for test the performance of generator 19 under two kinds of radiation environment. As an alternative embodiment, a plurality of ground radiation mechanisms 12 may be fixed to the second support 11 at intervals, or may be non-uniformly disposed. Alternatively, the ground radiation means 12 may be provided in one piece at the center of the second frame 11, and in this case, the ground radiation means 12 may be provided to have a larger size substantially similar to the size of the second frame 11.
When the ground radiation mechanisms 12 are controlled, the same manner as the control of the solar radiation mechanisms 2 can be adopted, that is, a plurality of ground radiation mechanisms 12 are independently arranged on the second bracket 11, and each ground radiation mechanism 12 is connected with a control line for controlling the work thereof. As an alternative embodiment, every second or every fourth or every third or more solar radiation means 2 may be connected to each other and arranged in groups on the carrier.
Specifically, as shown in fig. 7, the ground radiation mechanism 12 in the present embodiment includes: a second body 13; the second light source 14 is arranged at the end part of the second body 13 far away from the generator 19; the infrared filter lens 8 is arranged on one side of the second light source 14 close to the generator 19; and a transmission part 15 provided between the infrared filter 8 and the power generator 19, for transmitting the light emitted from the infrared filter 8 to the power generator 19. By arranging the ground radiation means 12 to include the second light source 14 and the infrared filter 8, since the ground surface temperature is relatively low and the energy of the ground radiation is mainly concentrated in the infrared region, the infrared filter 8 is directly arranged on the ground radiation means 12, so that the structure is simple while the real ground radiation can be simulated. As an alternative embodiment, the transmission unit 15 may not be provided.
The first light source 4 and the second light source 14 in this embodiment are both halogen lamps. As an alternative embodiment, the first light source 4 and the second light source 14 may be both xenon lamps or LED lamps; alternatively, the first light source 4 and the second light source 14 are each a combination of any two of the above-described lamps.
In this embodiment, the second body 13 is a cylindrical structure, the second support 11 is a fan-ring structure, an included angle between the first edge 9 of the fan-ring structure and the second edge 10 of the fan-ring structure is 150 °, and an included angle between the first edge 9 of the fan-ring structure and a horizontal plane is 15 °. Through setting up second support 11 to the fan ring structure for ground radiation mechanism 12 is wider in the scope of setting up on second support 11, in addition radiate under generator 19, can also radiate generator 19's both sides, and is closer with real ground radiation environment, and the setting of the contained angle of fan ring structure's first limit 9 and second limit 10 also more accords with the production mechanism of real ground radiation. As an alternative embodiment, the second body 13 may have a rectangular parallelepiped structure, a square structure, or another structure.
As shown in fig. 1, the heat radiation simulation apparatus of the wind turbine generator system in this embodiment further includes: and the lifting translation structure is fixedly connected with the first support 1 and is used for driving the first support 1 to do lifting movement or horizontal movement relative to the generator 19. Through setting up the lift translation structure with 1 fixed connection of first support, can drive 1 relative generator 19 of first support and make elevating movement or horizontal direction motion for first support 1 can the more models of adaptation and the generator 19 of size, has improved heat radiation analogue means's suitability.
As shown in fig. 9, there are many specific forms of the lifting and translating structure, and the lifting and translating structure in this embodiment includes: the first support 16, the first support 16 is equipped with the concrete chute; one end of the adjusting bracket 17 is provided with a sliding rail which is matched with the sliding groove to slide, and the other end of the adjusting bracket is fixedly connected with the first bracket 1; the lifting electric cylinder is connected to the first support 16 in a sliding manner and is fixedly connected with the adjusting bracket 17, and the lifting electric cylinder can drive the adjusting bracket 17 to drive the first bracket 1 to do lifting motion; the horizontal migration formula's electronic jar, with adjust support 17 fixed connection, can drive and adjust support 17 and drive first support 1 and make the motion of horizontal direction. As an alternative embodiment, any other elevating/translating mechanism may be used as long as it can realize both the elevating movement and the horizontal movement.
The second bracket 11 in this embodiment is fixed below the generator 19 by a second mount 18. As an alternative embodiment, the elevation/translation structure may also be fixedly connected to the second support 11.
Because the scenes that factor such as different years, different days, different time, different longitude and latitude, different weather conditions correspond are different, and solar radiation intensity and ground radiation intensity are also different, in order to adapt to the simulation of various scenes, the thermal radiation simulation device in this embodiment still includes: the input module 24 is configured to acquire input information, where the input information includes time and/or longitude and latitude and/or weather information; a controller including a calculation module 22 and a control adjustment module 23; the calculation module 22 is connected with the input module 24 and is used for calculating and generating the solar radiation intensity and/or the ground radiation intensity according to the input information; the control and regulation module 23 is connected with the calculation module 22 and is used for regulating the radiation intensity of the first light source 4 of the solar radiation mechanism 2 according to the solar radiation intensity; and/or adjusting the radiation intensity of the second light source 14 of the ground radiation mechanism 12 according to the ground radiation intensity.
Specifically, as shown in fig. 10, the input module 24 in this embodiment may be an upper computer or a human-computer interaction interface, such as a touch screen, and when in use, a user may input different years and/or different days and/or different hours and/or different minutes and/or different latitudes and/or different weather information on the touch screen, and then the calculating module 22 may automatically calculate corresponding solar radiation intensity and/or ground radiation intensity, and send the solar radiation intensity and/or ground radiation intensity to the control and adjustment module 23, the control and adjustment module 23 may adjust the radiation intensity of the first light source 4 to the solar radiation intensity according to the solar radiation intensity, and/or adjust the radiation intensity of the second light source 14 to the ground radiation intensity according to the ground radiation intensity, and then project the radiation intensity to the surface of the generator 19 through the filter lens, the real radiation spectrum and intensity are obtained, of course, for the working condition in daytime, the two areas of the upper half circumference of the solar radiation and the lower half circumference of the ground radiation work simultaneously, and for the working condition at night, only the lower half circumference area of the ground radiation works. Alternatively, the solar radiation intensity and the ground radiation intensity may also be correlated with altitude for different altitude areas, and altitude may also be added to the input information.
As shown in fig. 11, the calculation of the solar radiation intensity G can be calculated with reference to the following formula:
G＝fdirScRecosθ
wherein S iscIs the solar radiation constant, Sc＝1367W/m2(ii) a Theta represents the angle of incidence of the sun; f. ofdirRepresents the direct solar coefficient (0 ≦ f)dir≤1)；ReThe following formula can be used for calculation:
Re＝1.00011+0.034221cos(αd)+0.00128sin(αd)+0.000719cos(2αd)+0.000077sin(2αd)
θ＝90-θr
θr＝α+f(-90°≤θr≤90°)
α＝90-Z
Z＝cos-1{sin(Dc)sin(La)+cos(Dc)cos(La)cos(βh)} (0°≤Z≤99°)
Dc＝sin-1{sin(Oe)sin(Le)}
βh＝Lm-Ra(-180°≤βh≤180°)
Lm＝15tg+L0(0°≤Lm≤360°)
tg＝6.697375+0.0657098242te+UTC (0≤tg≤24)
te＝dj-51545
Oe＝23.439-(4×107)te
Le＝Lm+1.915sin(Am)+0.02sin(2Am)(0°≤Le≤360°)
Am＝357.528+0.9856te(0°≤Am≤360°)
Lm＝280.46+0.9856te(0°≤Lm≤360°)
wherein: t ishRepresents the number of hours; t ismRepresents the number of minutes; t istzRepresenting the number of time zones; y represents a certain year; dyRepresenting a day of the year; l is0Represents a regional geographic longitude; l isaRepresenting the geographic latitude of the region.
The ground radiation intensity can be calculated by using a calculation formula in the prior art, and redundant description is not repeated here.
As shown in fig. 9, the present embodiment also provides a system having a thermal radiation simulator, which includes a generator and the thermal radiation simulator as described above, wherein the generator 19 is a generator for driving a thermal radiation environment to be simulated on a test stand.
The system with the thermal radiation simulation device in the embodiment of the invention also comprises a thermal environment simulation device 21 which can simulate an actual radiation scene and a thermal environment scene on a transmission test bed of the generator 19, and further can consider the influence of external thermal load on the temperature rise of the generator 19, so that the self heat exchange and the corresponding temperature rise level of the generator 19 can be predicted and ascertained more accurately; through the simulation to different regions, different weather conditions, different time corresponding to different solar radiation intensity of heat radiation analogue means, different ground radiation intensity etc. do not receive the influence of the external environment of four seasons throughout the year, can evaluate the environmental suitability of generator 19 more accurately, and then can realize the customization thermal design of generator 19, realize the design of becoming more meticulous.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (15)
1. A wind generating set's heat radiation analogue means characterized in that includes:
a first bracket (1) for fitting above a generator (19) of the wind power plant;
at least one solar radiation mechanism (2) fixed on the first bracket (1) and used for simulating the solar radiation environment where the generator (19) is located.
2. Heat radiation simulation device of a wind park according to claim 1, characterised in that the solar radiation mechanism (2) comprises:
a first body (3);
the first light source (4) is arranged at the top of the first body (3);
at least one filter lens, which is arranged between the first light source (4) and the generator (19).
3. The thermal radiation simulation device of a wind turbine generator set according to claim 2, characterized in that said filter lens is provided in plurality, below said first light source (4); further comprising:
the mixing part (5) is arranged at the bottom of the first body (3), is positioned below the filter lenses and is used for mixing the light emitted by the filter lenses and transmitting the mixed light to the generator (19).
4. The thermal radiation simulation device of a wind turbine according to claim 3, characterised in that a plurality of said filter lenses are arranged in succession along the propagation direction of the light emitted by said first light source (4).
5. The thermal radiation simulation device of a wind turbine generator set according to claim 3, characterized in that said plurality of filter lenses comprises an ultraviolet filter lens (6), a visible filter lens (7) and an infrared filter lens (8).
6. The thermal radiation simulation device of a wind turbine generator set according to claim 5, characterized in that a plane perpendicular to the propagation direction of the light emitted by said first light source (4) is chosen to cross said first body (3), said ultraviolet filter (6), visible filter (7) and infrared filter (8) being arranged in sequence along the direction outwards of the centre of said cross section.
7. The thermal radiation simulation device of a wind turbine generator set according to claim 2, characterized in that said first body (3) is of cylindrical configuration.
8. The thermal radiation simulation device of a wind power plant according to claim 1, characterized in that said solar radiation means (2) are plural and said plural solar radiation means (2) are provided on said first support (1) independently of each other; alternatively, the first and second electrodes may be,
the solar radiation mechanisms (2) are multiple, every two solar radiation mechanisms (2) or every four solar radiation mechanisms (2) are connected with each other and arranged on the first support (1) in groups.
9. The thermal radiation simulation device of a wind turbine generator set according to claim 1, characterized in that said first support (1) presents a fan-ring structure.
10. Heat radiation simulation device of a wind park according to claim 9, characterised in that the angle between the first side (9) of the fan ring structure and the second side (10) of the fan ring structure is 150 ° and the angle between the first side (9) of the fan ring structure and the horizontal plane is 15 °.
11. Heat radiation simulation device of a wind park according to any of the claims 1-10, further comprising:
a second bracket (11) for fitting under the generator (19);
and the ground radiation mechanism (12) is fixed on the second bracket (11) and is used for simulating the ground radiation environment where the generator (19) is positioned.
12. Heat radiation simulation device of a wind park according to claim 11, wherein the ground radiation means (12) comprise:
a second body (13);
the second light source (14) is arranged at the end part of the second body (13) far away from the generator (19);
and the infrared filter lens (8) is arranged on one side of the second light source (14) close to the generator (19) and is used for transmitting the light emitted by the infrared filter lens (8) to the generator (19).
13. Heat radiation simulation device of a wind park according to any of the claims 1-10, further comprising:
the lifting translation structure is fixedly connected with the first support (1) and used for driving the first support (1) to do lifting movement or horizontal movement relative to the generator (19).
14. The thermal radiation simulation device of a wind turbine generator set as set forth in claim 11, further comprising:
the input module (24) is used for acquiring input information, and the input information comprises time and/or longitude and latitude and/or weather information;
a controller comprising a calculation module (22) and a control regulation module (23); the computing module (22) is connected with the input module (24) and is used for computing and generating solar radiation intensity and/or ground radiation intensity according to the input information; the control and regulation module (23) is connected with the calculation module (22) and is used for regulating the radiation intensity of the first light source (4) of the solar radiation mechanism (2) according to the solar radiation intensity; and/or adjusting the radiation intensity of a second light source (14) of the ground radiation mechanism (12) according to the ground radiation intensity.
15. A system with a heat radiation simulation device, characterized in that it comprises a generator and a heat radiation simulation device according to any of claims 1-14.
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