CN111442938B - Tracking type gas bomb testing device with flexible photovoltaic support structure - Google Patents
Tracking type gas bomb testing device with flexible photovoltaic support structure Download PDFInfo
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- CN111442938B CN111442938B CN202010251947.5A CN202010251947A CN111442938B CN 111442938 B CN111442938 B CN 111442938B CN 202010251947 A CN202010251947 A CN 202010251947A CN 111442938 B CN111442938 B CN 111442938B
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 238000004080 punching Methods 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 241000252254 Catostomidae Species 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 9
- 238000010248 power generation Methods 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
- H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
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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
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention relates to the field of wind resistance design of new energy photovoltaic power generation engineering, in particular to a gas bomb test device of a tracking type flexible photovoltaic support structure. The aeroelastic test device of the tracking type flexible photovoltaic support structure provided by the invention can ensure effective application of prestress of different horizontal stay cables in the aeroelastic test of the flexible photovoltaic support structure by arranging the prestress application device, can realize continuous stepless adjustment of the arrangement inclination angle of the assembly by arranging the lifting device, can simultaneously meet the requirements of aeroelastic tests of single-row photovoltaic assemblies and multi-row photovoltaic array structures, and provides aeroelastic test technical support for wind resistance design of the tracking type flexible photovoltaic support structure under different structural specification parameters. In addition, the pulley is arranged at the bottom of the aeroelastic test device of the tracking type flexible photovoltaic support structure, so that the requirement of sunlight with different incident azimuth angles can be met, and the incident tracking of the sunlight in all seasons is realized.
Description
Technical Field
The invention belongs to the field of wind resistance design of new energy photovoltaic power generation engineering, and particularly relates to a tracking type aeroelastic test device of a flexible photovoltaic support structure.
Technical Field
Under the background of national strategy for vigorously developing new energy, the photovoltaic power generation technology is rapidly developed due to environmental protection and economy. In order to meet the construction requirements of various complex fields such as mudflats, ponds and the like, a flexible photovoltaic support structure based on a prestressed inhaul cable system is widely favored by the market in recent years. The structural system is characterized in that a prestressed horizontal cable is adopted to replace a main beam of a traditional support structure so as to realize the large-span arrangement of the photovoltaic module. In addition, in order to improve the power generation efficiency, the components on the bracket usually adopt a tracking type form, namely, the arrangement inclination angle of the components can be adjusted along with the change of the sunlight incidence angle. The traceable flexible photovoltaic support structure is generally light in dead weight, large in span and very sensitive to wind load. From the existing engineering case, the bracket structure has obvious wind vibration effect, and the phenomenon of wind-induced damage is frequent. Considering that the structure is a new structure system, the wind resistance design theory and the standard value reference related to the structure are not complete, so that the development of the aeroelastic test of the structure scale model is an effective method for checking the design rationality at present, and the reference can be provided for the wind resistance design of the similar bracket structure. However, in view of the current research and application situations at home and abroad, the current aeroelastic test aiming at the novel traceable flexible photovoltaic support structure is quite rare. In order to ensure the safety and the reasonableness of the wind resistance design of the support structure, a set of aeroelastic test device aiming at the tracking type flexible photovoltaic support structure is necessary to be researched and developed.
Disclosure of Invention
The invention aims to provide a gas bomb test device of a tracking type flexible photovoltaic support structure, so that a parameter value basis is provided for wind resistance design of the photovoltaic support structure.
For this reason, the above object of the present invention is achieved by adopting the following technical solutions:
the utility model provides a flexible photovoltaic supporting structure's of pursuit formula aeroelastic test device which characterized in that: the aeroelastic testing device of the tracking type flexible photovoltaic support structure comprises a horizontal inhaul cable, a pair of door frames and a prestress applying device, wherein the door frames are positioned on two sides of the horizontal inhaul cable and used for supporting the horizontal inhaul cable; the portal frame comprises a front upright post and a rear upright post which are arranged at an interval of L and a cross beam which is arranged between the front upright post and the rear upright post and has a length of X, X is more than or equal to 1.1L, the top of the front upright post is hinged with one end of the cross beam, the top of the rear upright post is provided with a lifting device, the lifting device can adjust the height of the lifting device, the top of the lifting device is provided with a sliding block, the sliding block is embedded into a bottom sliding groove at the bottom of the cross beam and can slide along the bottom sliding groove, the side part of the cross beam is provided with a side sliding groove, the side sliding groove penetrates through the bottom sliding groove, two sides of the sliding block are respectively provided with a screw rod, the screw rods are respectively embedded into; and the left portal frame is provided with prestress applying devices at the beam positions at the tops of the front upright post and the rear upright post, and the prestress applying devices are used for applying prestress to the horizontal stay cable.
While adopting the technical scheme, the invention can also adopt or combine the following technical scheme:
as a preferred technical scheme of the invention: the lifting device is a jack device.
As a preferred technical scheme of the invention: the prestress applying device comprises an inner shell, a horizontal spring fixed to one end in the inner shell, a connecting piece connected to the other end of the horizontal spring, two sliding plates positioned on the outer side of the inner shell and a connecting diaphragm plate between the sliding plates, wherein the connecting piece penetrates through the connecting diaphragm plate, and a bolt penetrating through the connecting piece and connecting the diaphragm plate is arranged in the middle of the connecting piece and the middle of the connecting diaphragm plate; the sliding plate is provided with a bolt group embedded into the sliding groove of the inner shell so that the sliding plate can slide or be fixed relative to the inner shell.
As a preferred technical scheme of the invention: the connecting piece has great rigidity, and its both ends are the triangle-shaped component of hollowing, and the centre is the rectangle, and the center department of rectangle plane is equipped with the trompil.
As a preferred technical scheme of the invention: the inner shell comprises an upper cover plate, a lower cover plate, a front side plate, a rear side plate and a left end plate, the horizontal spring is fixed on the inner side of the left end plate, and the outer side of the left end plate is fixed on the cross beam.
As a preferred technical scheme of the invention: two rows of pulleys and 4 suckers are arranged at the bottoms of the front upright post and the rear upright post of the portal frame.
As a preferred technical scheme of the invention: one end of the horizontal guy cable is connected with the connecting piece of the prestress applying device of the left portal frame, the other end of the horizontal guy cable is connected with the punching end plate arranged on the cross beam of the right portal frame, and the punching end plate on the same horizontal guy cable and the connecting piece of the prestress applying device are always at the same height
As a preferred technical scheme of the invention: the bottom spout of crossbeam bottom and the spout scope of side spout are that the crossbeam is in under the horizontality between the free end of crossbeam to the rear column top, and crossbeam bottom and both sides between preceding, the rear column all seal, the sideslip groove top or the below of crossbeam are equipped with the angle scale, can directly read the inclination of subassembly through the position of the even bolt of slider side.
As a preferred technical scheme of the invention: the prestress applying device at the top cross beam of the rear upright post of the left portal frame is connected with the cross beam in a bolt sleeve type manner, so that the prestress applying device can move and be fixed along the cross beam to facilitate the adjustment of the distance between the front horizontal stay cable and the rear horizontal stay cable; the punching end plate at the top cross beam of the right side portal rear upright post is also connected in a bolt sleeve type manner so as to keep consistent height with the connecting piece of the prestress applying device above the left side portal rear upright post. When synchronous test needs to be carried out on a plurality of rows of photovoltaic module arrays, the prestress applying devices with corresponding number can be added on the left portal cross beam in a bolt sleeve connection mode, and the punching end plates with the number corresponding to the prestress applying devices are added on the right portal cross beam.
As a preferred technical scheme of the invention: the inner shell of the prestress applying device is provided with distance scales, and the stretching length of the spring can be reflected through the moving distance of the sliding plate so as to determine the applied prestress.
The invention provides a gas bomb test device of a tracking type flexible photovoltaic support structure, which can ensure the effective application of prestress of different horizontal guy cables in a gas bomb test of the flexible photovoltaic support structure by arranging a prestress application device, can realize the continuous stepless adjustment of the arrangement inclination angle of an assembly by arranging a lifting device, can simultaneously meet the requirements of the gas bomb test of a single-row photovoltaic assembly and a multi-row photovoltaic array structure, and provides a gas bomb test technical support for the wind resistance design of the tracking type flexible photovoltaic support structure under different structural specification parameters. In addition, the pulley is arranged at the bottom of the aeroelastic test device of the tracking type flexible photovoltaic support structure, so that the requirement of sunlight with different incident azimuth angles can be met, and the incident tracking of the sunlight in all seasons is realized.
Drawings
Fig. 1 is an elevation view of a bomb test apparatus of a tracking flexible photovoltaic support structure provided by the invention.
Fig. 2 is a plan view of a balloon test apparatus of the tracking flexible photovoltaic support structure provided in the present invention.
Fig. 3 is a sectional view taken along a-a in fig. 2.
Fig. 4 is an elevation view of the prestress applying means.
Fig. 5 is a sectional view taken in the direction B-B in fig. 4.
Fig. 6 is an elevation view of the cross beam.
Fig. 7 is a sectional view taken along the direction C-C in fig. 3.
Fig. 8 is a plan view of the right side gantry beam.
Detailed Description
The invention will be further illustrated with reference to the following examples and the accompanying drawings, without limiting the scope of the invention to the examples described below. Any modification and variation made within the spirit of the present invention and the scope of the claims fall within the scope of the present invention.
As shown in FIGS. 1-8, a gas bomb test device of flexible photovoltaic supporting structure of pursuit formula includes: 2 prestressing force applying device 1, 2 horizontal cable 2 and photovoltaic module 3 of left and right sides portal, left side portal. Each side portal consists of a front upright post 4, a rear upright post 5 and a cross beam 6. The distance between the front upright post 4 and the rear upright post 5 is 2 m, and the length of the cross beam 6 is 2.2 m. The top of the front upright post 4 is hinged with one end of the cross beam 6. The top of the rear upright post 5 is provided with a jack 7, and the top of the jack 7 is connected with a slide block 8. The sliding block 8 is embedded in a sliding groove at the bottom of the cross beam 6, and bolts 9 are arranged on two sides of the sliding block 8 in the direction perpendicular to the sliding groove. The bolt 9 passes through the sliding grooves on two sides of the cross beam 6. The prestress applying device 1 is respectively arranged at the connecting end of the cross beam 6 and the front upright post 4 and the connecting part of the cross beam 6 and the rear upright post 5. The prestressing force applying device 1 is composed of an inner housing, a horizontal spring 10, a connecting member 11, sliding plates 12 on both sides of the inner housing, and a connecting diaphragm 13 between the sliding plates 12. The inner housing is composed of upper and lower cover plates 14, front and rear side plates 15, and a left end plate 16. The left end plate 16 is connected to the cross member 6 such that the installation direction of the prestressing force applying device 1 is parallel to the horizontal cable direction. The sliding plates 12 are arranged on the outer sides of the front and rear side plates 15. The sliding plates 12 on the two sides and the front and rear side plates 15 are all provided with hollow sliding grooves, and the sliding plates 12 on each side are connected with the side plates 15 through 3 penetrating bolt groups 17. The 2 sliding plates 12 are connected at the open end of the inner casing by a connecting bulkhead 13. The horizontal spring 10 is connected to the left end plate 16 at one end and to the connecting member 11 at the other end. The other end of the connecting piece 11 is connected with the horizontal pulling cable 2. The connecting piece 11 and the plane center position of the connecting diaphragm 13 are both provided with openings with the same size. The connecting diaphragm 13 is positioned below the connecting piece 11, and the openings of the connecting diaphragm and the connecting piece are positioned on the same plane. The connecting piece 11 and the connecting diaphragm 13 are connected by a bolt 18 extending through the respective openings.
In this embodiment, the front and rear pillars 4 and 5 are in a liftable form of inner and outer sleeves. The bottom seats 19 of the front and rear uprights 4 and 5 are each provided with 2 rows of pulleys 20 and 4 suction cups 21.
In this embodiment, one end of each horizontal cable 2 is connected to the connecting member 11 of the left prestress applying device 1, and the other end is connected to the triangular perforated end plate 22 on the right gantry beam. The left side portal attachment member 11 is at the same height as the right side portal drilling end plate 22. And the photovoltaic modules 3 are arranged on the 2 horizontal inhaul cables 2.
In this embodiment, the bottom sliding groove and the side sliding grooves on both sides of the cross beam 6 range from the free end (i.e., non-hinged end) of the cross beam 6 in the horizontal state to the cross beam at the top position of the rear pillar. And the bottom and both sides of the cross beam 6 between the front upright 4 and the rear upright 5 are closed. The crossbeam 6 is marked above its both sides face spout and is equipped with the angle scale, can read photovoltaic module's inclination in real time.
In this embodiment, the prestress applying device 1 above the rear pillar 5 is connected to the cross beam 6 by a bolt-and-tube connection method. The prestress applying device 1 can be moved along the cross beam by tightening or loosening the bolt sleeves. The prestressing force applying device 1 above the front upright post 4 is connected with the cross beam 6 in a fixed connection mode. In order to correspond to the left portal, the perforated end plate 22 at the top cross beam of the right portal rear upright 5 is also connected in a bolt sleeve type, and the perforated end plate 22 at the top of the right portal front upright 4 is also connected with the cross beam 6 in a fixed manner. The bolt sleeves are vertically hung on the cross beam, the bolt sleeves are vertically connected with the prestress applying device, and the punching end plate is also vertically connected with the corresponding bolt sleeves. If N rows of photovoltaic modules need to be added in the test, 2N prestress applying devices 1 can be added on the cross beam 6 of the left portal frame in a bolt sleeve mode, and 2N perforated end plates 22 are added on the cross beam 6 of the right portal frame. The height of the odd-numbered horizontal cables and the height of the even-numbered horizontal cables are adjusted, namely the length of bolt sleeves on the prestress applying devices connected with the odd-numbered horizontal cables and the length of bolt sleeves on the corresponding punching end plates are adjusted, and the length of bolt sleeves on the prestress applying devices connected with the even-numbered horizontal cables and the length of bolt sleeves on the corresponding punching end plates are adjusted, so that the heights of the highest edge and the lowest edge of each row of photovoltaic modules in the photovoltaic arrays are respectively the same.
In this embodiment, the displacement scale is marked on the inner shell on the prestress applying device 1, and the scale can directly reflect the stretching length of the spring, so that the prestress applied to the horizontal stay cable can be controlled.
In this embodiment, the connecting member 11 is made of high-strength steel, the two end portions of the connecting member are welded into a hollow triangle by high-strength round steel rods, and the center of the plane of the connecting member 11 is provided with an opening.
In the specific implementation process of the embodiment, the bolts 9 are firstly loosened, and the height of the jack 7 is adjusted, so that the cross beam 6 reaches the target component inclination angle. The bolts 9 are then tightened to fix the inclination of the slide 8 and the cross-beam 6. The bolts 18 are pulled out so that the connecting piece 11 and the connecting diaphragm 13 are disengaged from each other. The application of prestress is accomplished by loosening the bolts 17, adjusting the link 11 and slide plate 12 so that the spring elongation satisfies the desired prestress value, then tightening the bolts 17 and inserting the bolts 18 into the openings of the link 11 and the connecting diaphragm 13.
The above-described embodiments are intended to illustrate the present invention, but not to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit of the present invention and the scope of the claims fall within the scope of the present invention.
Claims (9)
1. The utility model provides a flexible photovoltaic supporting structure's of pursuit formula aeroelastic test device which characterized in that: the aeroelastic testing device of the tracking type flexible photovoltaic support structure comprises a horizontal inhaul cable, a pair of door frames and a prestress applying device, wherein the door frames are positioned on two sides of the horizontal inhaul cable and used for supporting the horizontal inhaul cable; the portal frame comprises a front upright post and a rear upright post which are arranged at an interval of L and a cross beam which is arranged between the front upright post and the rear upright post and has a length of X, X is more than or equal to 1.1L, the top of the front upright post is hinged with one end of the cross beam, the top of the rear upright post is provided with a lifting device, the lifting device can adjust the height of the lifting device, the top of the lifting device is provided with a sliding block, the sliding block is embedded into a bottom sliding groove at the bottom of the cross beam and can slide along the bottom sliding groove, the side part of the cross beam is provided with a side sliding groove, the side sliding groove penetrates through the bottom sliding groove, two sides of the sliding block are respectively provided with a screw rod, the screw rods are respectively embedded into; the left portal frame is provided with prestress applying devices at the positions of the beams at the tops of the front upright post and the rear upright post, and the prestress applying devices are used for applying prestress to the horizontal stay cables;
the prestress applying device comprises an inner shell, a horizontal spring fixed to one end in the inner shell, a connecting piece connected to the other end of the horizontal spring, two sliding plates positioned on the outer side of the inner shell and a connecting diaphragm plate between the sliding plates, wherein the connecting piece penetrates through the connecting diaphragm plate, and a bolt penetrating through the connecting piece and connecting the diaphragm plate is arranged in the middle of the connecting piece and the middle of the connecting diaphragm plate; the sliding plate is provided with a bolt group embedded into the sliding groove of the inner shell so that the sliding plate can slide or be fixed relative to the inner shell.
2. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: the lifting device is a jack device.
3. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: the two ends of the connecting piece are hollowed triangular members, the middle of the connecting piece is rectangular, and the center of the rectangular plane is provided with an opening.
4. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: the inner shell comprises an upper cover plate, a lower cover plate, a front side plate, a rear side plate and a left end plate, the horizontal spring is fixed on the inner side of the left end plate, and the outer side of the left end plate is fixed on the cross beam.
5. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: two rows of pulleys and 4 suckers are arranged at the bottoms of the front upright post and the rear upright post of the portal frame.
6. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: one end of the horizontal guy cable is connected with a connecting piece of the prestress applying device of the left portal frame, the other end of the horizontal guy cable is connected with a punching end plate arranged on a cross beam of the right portal frame, and the punching end plate on the same horizontal guy cable is always at the same height with the connecting piece of the prestress applying device.
7. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: the bottom spout of crossbeam bottom and the spout scope of side spout are that the crossbeam is in under the horizontality between the free end of crossbeam to the rear column top, and crossbeam bottom and both sides between preceding, the rear column all seal, the sideslip groove top of crossbeam or below are equipped with the angle scale.
8. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: the prestress applying device at the top cross beam of the rear upright post of the left portal frame is connected with the cross beam in a bolt sleeve type manner, so that the prestress applying device can move and be fixed along the cross beam to facilitate the adjustment of the distance between the front horizontal stay cable and the rear horizontal stay cable; the punching end plate at the top cross beam of the right side portal rear upright post also adopts a bolt sleeve type connection mode so as to keep consistent height with the connecting piece of the prestress applying device above the left side portal rear upright post.
9. The aeroelastic testing device of the tracked flexible photovoltaic supporting structure, according to claim 1, is characterized in that: and distance scales are arranged on the inner shell of the prestress applying device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010251947.5A CN111442938B (en) | 2020-04-01 | 2020-04-01 | Tracking type gas bomb testing device with flexible photovoltaic support structure |
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| CN202010251947.5A CN111442938B (en) | 2020-04-01 | 2020-04-01 | Tracking type gas bomb testing device with flexible photovoltaic support structure |
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| CN111442938A CN111442938A (en) | 2020-07-24 |
| CN111442938B true CN111442938B (en) | 2021-02-02 |
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| CN115478697A (en) * | 2022-10-08 | 2022-12-16 | 河北优沃钢结构有限公司 | Construction method of flexible photovoltaic power station |
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