CN115901162B - Wind and snow environment wind tunnel simulation device - Google Patents
Wind and snow environment wind tunnel simulation device Download PDFInfo
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- CN115901162B CN115901162B CN202310191719.7A CN202310191719A CN115901162B CN 115901162 B CN115901162 B CN 115901162B CN 202310191719 A CN202310191719 A CN 202310191719A CN 115901162 B CN115901162 B CN 115901162B
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Abstract
The invention belongs to the technical field of environment simulation, and particularly relates to a wind and snow environment wind tunnel simulation device for urban and rural construction green development. The invention can perform stable regulation simulation on wind power, wind direction and snow amount, and can intuitively display stress conditions of different points of the house model roof in a test for simulating wind and snow conditions based on experimental simulation of different weather conditions of the house model.
Description
Technical Field
The invention belongs to the technical field of environment simulation, and particularly relates to a wind and snow environment wind tunnel simulation device for green development of urban and rural construction.
Background
At present, in order to accelerate the construction of a new development pattern, the development of high quality is promoted, the urban and rural construction gradually and comprehensively realizes the green development, the addition of photovoltaic panels to the top of a house of residents is an important direction in the green development, the construction of photovoltaic power generation effectively increases the utilization of light energy, and energy sources are saved to create economy.
However, the following problems are also encountered in the development of the application of photovoltaic power generation to urban and rural construction:
1. the addition of the photovoltaic electric plate increases load on the top of a resident house, and further combined action of wind and snow can lead to uneven distribution of snow on the roof of a larger-span structure in cold weather in winter, so that the problem that the roof structure is locally unstable to cause the whole collapse and damage of the house is easily caused, so that a reasonable wind and snow resistance design method is required to be provided, but an experiment system for different wind direction and snow conditions of different snow distribution conditions of the roof of the house is lacking at present, so that theoretical verification cannot be obtained in structural reinforcement of the wind and snow resistance design of the house, and potential safety hazards exist;
2. at present, the reinforcement scheme of the wind and snow resistant structure adopted for houses is not enough in pertinence, and the emphasized wind and snow resistant reinforcement operation can not be carried out on the important stress position of the roof, so that the wind and snow resistant reconstruction speed is low, and the reinforcement resource waste is caused.
Therefore, we propose a wind and snow environment wind tunnel simulation device for green development of urban and rural construction to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems and provides a wind tunnel simulation device for a snowy environment, which aims to overcome the problems.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a wind-snow environment wind tunnel simulation device, includes wind-force generation section, wind direction regulation and control section and test section, direct current fan has been installed to wind-force generation section internal fixation, wind direction regulation and control mechanism has been installed to wind-force generation section's upper end fixed mounting, relative one side inner wall is connected with a plurality of aviation baffles that set up from top to bottom through the transmission shaft rotation around the wind direction regulation and control section, the outside of wind direction regulation and control section is fixed and is installed and be used for driving transmission shaft pivoted angle adjustment mechanism, the upper end fixed mounting of test section has simulated snow mechanism, the step groove has been seted up to the lower extreme of test section, and corresponds step inslot fixed joint has the mounting panel, through locking mechanism fixed joint between test section and the mounting panel, the lower extreme fixed mounting of mounting panel has the rotating electrical machines, the upper end output of rotating electrical machines runs through the upper end of mounting panel, and fixedly connected with rotatory layer board, the upper end fixedly connected with house model, the upper end of house model is installed and is provided with photovoltaic panel model, still evenly distributed installs a plurality of visual display mechanism of atress load, visual display mechanism is installed to the upper end, visual display mechanism is installed at the annular load and is fixed with the annular sensing mechanism of the outside of the rotation of the multistage load regulation and control mechanism, the annular load is connected with the fixed and stable supporting plate.
In the wind tunnel simulation device in the wind and snow environment, the wind force regulation and control mechanism includes the insulating shell, the wrapping post has been installed to the inner wall bottom of insulating shell fixedly, the outer winding of wrapping post has the resistance wire, the relative one side inner wall of upper end of insulating shell is connected with adjusting screw through the bearing rotation, the outside fixed mounting of insulating shell is equipped with accommodate motor, adjusting screw's output and adjusting screw's one end fixed connection, adjusting screw's pole wall has still the screw thread cup jointed the regulating block, the lower extreme fixedly connected with of regulating block connects the electric plate with the contact of resistance wire, the relative one side inner wall of upper end of insulating shell still is fixed with the guide slide bar, the slide hole that cup joints with the guide slide bar slip is seted up to the lateral wall of regulating block.
In the wind and snow environment wind tunnel simulation device, the angle adjusting mechanism comprises two transverse plates which are vertically symmetrically and fixedly connected to the outer side of the wind direction adjusting section, a worm is rotationally connected between the two transverse plates, one end of the transmission shaft penetrates through and extends out of the wind direction adjusting section, a worm wheel meshed with the worm is fixedly connected to the transmission shaft, the upper side of the transmission shaft is located on the upper side of the transmission shaft, a driving motor is fixedly connected to the upper end of the transverse plate, and the output end of the driving motor is fixedly connected with one end of the worm.
In the wind tunnel simulation device for the wind and snow environment, the simulated snow making mechanism comprises an installation shell integrally connected to the upper side of the test section, a positioning plate is fixedly connected in the installation shell, a plurality of water spray nozzles are fixedly connected to the positioning plate, a plurality of liquid nitrogen spray nozzles located between two adjacent water spray nozzles are fixedly connected to the positioning plate, the liquid nitrogen spray nozzles are of a Y-shaped structure, a plurality of water spray nozzles are communicated with one water passage pipeline, a plurality of liquid nitrogen spray nozzles are communicated with one liquid nitrogen pipeline, a high-pressure water pump is arranged on the water passage pipeline, and a liquid nitrogen pump is arranged on the liquid nitrogen pipeline.
In the wind tunnel simulation device for the snow and wind environment, the locking mechanism comprises a first U-shaped locking plate fixedly connected to the lower end of the test section and a second U-shaped locking plate fixedly connected to the lower end of the mounting plate, a clamping plate is clamped and inserted between the first U-shaped locking plate and the second U-shaped locking plate relatively, and the first U-shaped locking plate, the second U-shaped locking plate and the clamping plate are fixedly connected through locking bolts.
In the wind tunnel simulation device in the snow environment, the stress load visual display mechanism comprises a plurality of transparent measurement supporting pipes fixedly connected to the upper ends of the rotary supporting plates, graduated scales are fixedly arranged outside the pipe walls of the transparent measurement supporting pipes, liquid storage cavities communicated with the lower ends of the transparent measurement supporting pipes are formed in the rotary supporting plates, colored liquid is stored in the liquid storage cavities, one-way air supplementing valves are connected to the upper ends of the rotary supporting plates corresponding to the liquid storage cavities in a threaded mode, piston blocks are arranged in the pipe walls of the lower ends of the transparent measurement supporting pipes, electromagnetic blocks are fixedly connected to the tops of the inner walls of the transparent measurement supporting pipes, and permanent magnetic blocks are fixedly connected to the upper ends of the piston blocks.
In the wind tunnel simulation device for the wind and snow environment, the load pressure sensing self-feedback mechanism comprises a support plate fixedly connected to the upper end of the transparent measuring support tube, the upper end of the support plate is fixedly connected with a sealing shell, the upper end of the sealing shell is fixedly connected with a ceramic diaphragm, and the lower end of the ceramic diaphragm is printed with a thick film resistor.
In the wind tunnel simulation device for the wind and snow environment, the annular limiting mechanism comprises a supporting cylinder fixedly connected to the upper end of the mounting plate, an annular limiting plate is fixedly sleeved on the outer side of the rotary supporting plate, and an annular limiting groove matched with the annular limiting plate in sliding connection is formed in the inner side of the upper end of the supporting cylinder.
In the wind and snow environment wind tunnel simulation device, the synchronous multistage experiment regulation and control mechanism comprises a fixed circular shell, a connecting shaft is rotatably connected to the center of the inner wall of the fixed circular shell through a bearing, a stepping motor is fixedly connected to the outer side of the fixed circular shell, the output end of the stepping motor is in transmission connection with the connecting shaft through a belt pulley assembly, a plurality of azimuth electric connection blocks and wind direction electric connection blocks are fixedly arranged on the inner wall of the fixed circular shell at intervals, a wind power electric connection block is fixedly arranged on the inner wall of the fixed circular shell, an extension rod is fixedly sleeved on the shaft wall of the connecting shaft, and one end of the extension rod is fixedly connected with a conductive block.
Compared with the prior art, the invention has the beneficial effects that:
through wind power generation section, wind direction regulation and control section, test section, direct current fan, wind-force regulation and control mechanism, transmission shaft, aviation baffle, angle adjustment mechanism and the simulation of making snow mechanism that set up, can construct complete wind tunnel based on the wind snow environment, and can carry out stable regulation and control simulation to wind-force, wind direction and snowing volume, based on the experimental simulation of the different weather conditions of house model for obtain theoretical verification in the structural reinforcement to the design of house anti-wind snow, improve the accuracy of reinforcement construction.
Through step groove, mounting panel, locking mechanism, rotating electrical machines, rotatory layer board, house model, photovoltaic electric plate model that set up, can carry out quick adjustment to the relative position of house model, and then satisfy the simulation experiment of different position house model atress analysis.
Through the stress load visual display mechanism and the load pressure sensing self-feedback mechanism, the stress conditions of different point positions of the house model roof can be visually displayed in the test of simulating the wind and snow conditions, and the stress positions of the roof can be emphasized to resist wind and snow reinforcement operation, so that the wind and snow resistance transformation speed is effectively improved, and the resource utilization is better.
Through the synchronous multistage test regulation and control mechanism that sets up, can carry out hierarchical self-regulating operation to house model's test position, wind direction angle and wind strength automatically, need not artifical direct intervention, can satisfy the test demand of different snow and wind environments, the test intensity regulation and control of step-by-step incremental is more accurate, has effectively guaranteed test quality.
To sum up: the invention can perform stable regulation simulation on wind power, wind direction and snow amount, and can intuitively display stress conditions of different points of the house model roof in a test for simulating wind and snow conditions based on experimental simulation of different weather conditions of the house model.
Drawings
FIG. 1 is a schematic diagram of a wind tunnel simulation device in a snowy and snowy environment;
FIG. 2 is a schematic structural view of a wind power regulating mechanism of the wind tunnel simulation device in a snowy and snowy environment;
FIG. 3 is a schematic diagram of the angle adjusting mechanism of the wind tunnel simulation device in the snow and wind environment;
FIG. 4 is a schematic diagram of a part of an enlarged structure of a wind tunnel simulation device in a snowy environment;
FIG. 5 is a schematic structural view of a visual display mechanism for the stress load of the wind tunnel simulation device in the snowy and wind environment;
FIG. 6 is a schematic structural view of a locking mechanism of a wind tunnel simulator in a snowing environment;
FIG. 7 is a schematic diagram of a cross-sectional structure of a synchronous multistage test regulation mechanism of a wind and snow environment wind tunnel simulation device provided by the invention;
fig. 8 is a schematic side view structure of a synchronous multistage test regulation mechanism of the wind and snow environment wind tunnel simulation device provided by the invention.
In the figure: 1. a wind generating section; 2. a wind direction control section; 3. a test section; 4. a direct current fan; 5. a wind power regulation mechanism; 51. an insulating case; 52. a winding post; 53. a resistance wire; 54. adjusting a screw; 55. adjusting a motor; 56. an adjusting block; 57. a power connection sheet; 58. a guide slide bar; 6. a transmission shaft; 7. an air deflector; 8. an angle adjusting mechanism; 81. a cross plate; 82. a worm; 83. a worm wheel; 84. a driving motor; 9. simulating a snow making mechanism; 91. a mounting shell; 92. a positioning plate; 93. a water mist spray head; 94. a liquid nitrogen spray head; 95. a water passage; 96. a liquid nitrogen pipeline; 97. a high pressure water pump; 98. a liquid nitrogen pump; 10. a step groove; 11. a mounting plate; 12. a locking mechanism; 121. a first U-shaped locking plate; 122. a second U-shaped locking plate; 123. a clamping plate; 13. a rotating electric machine; 14. rotating the supporting plate; 15. a house model; 16. a photovoltaic panel model; 17. a visual display mechanism for the stress load; 171. a transparent measurement support tube; 172. a graduated scale; 173. a liquid storage cavity; 174. a one-way air compensating valve; 175. a piston block; 176. an electromagnetic block; 177. permanent magnet blocks; 18. the load pressure induction self-feedback mechanism; 181. a support plate; 182. a sealed housing; 183. a ceramic membrane; 184. a thick film resistor; 19. an annular limiting mechanism; 191. a support cylinder; 192. an annular limiting plate; 193. an annular limit groove; 20. a synchronous multistage test regulation mechanism; 201. fixing the round shell; 202. a connecting shaft; 203. a stepping motor; 204. a pulley assembly; 205. azimuth electric connection blocks; 206. a wind direction electric connection block; 207. a wind power electric connection block; 208. an extension rod; 209. and a conductive block.
Description of the embodiments
The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.
As shown in fig. 1-8, a wind and snow environment wind tunnel simulation device comprises a wind generating section 1, a wind direction regulating section 2 and a test section 3, wherein a direct-current fan 4 is fixedly arranged in the wind generating section 1, a wind force regulating mechanism 5 is fixedly arranged at the upper end of the wind generating section 1, the wind force regulating mechanism 5 comprises an insulating shell 51, a winding post 52 is fixedly arranged at the bottom of the inner wall of the insulating shell 51, a resistance wire 53 is wound outside the winding post 52, an adjusting screw 54 is rotatably connected to the inner wall of one side opposite to the upper end of the insulating shell 51 through a bearing, an adjusting motor 55 is fixedly arranged at the outer side of the insulating shell 51, the output end of the adjusting motor 55 is fixedly connected with one end of the adjusting screw 54, an adjusting block 56 is sleeved on the rod wall of the adjusting screw, an electric connecting piece 57 in contact with the resistance wire 53 is fixedly connected to the lower end of the adjusting block 56, a guide slide rod 58 is fixedly arranged on the inner wall of one side opposite to the upper end of the insulating shell 51, and a slide hole in sliding connection with the guide slide rod 58 is formed in the side wall of the adjusting block 56.
The inner wall of the front side and the back side of the wind direction regulating section 2 are rotationally connected with a plurality of wind deflectors 7 which are arranged up and down through a transmission shaft 6, an angle regulating mechanism 8 which is used for driving the transmission shaft 6 to rotate is fixedly arranged on the outer side of the wind direction regulating section 2, the angle regulating mechanism 8 comprises two transverse plates 81 which are vertically symmetrically and fixedly connected with the outer side of the wind direction regulating section 2, a worm 82 is rotationally connected between the two transverse plates 81, one end of the transmission shaft 6 penetrates through and extends out of the wind direction regulating section 2, a worm wheel 83 which is meshed with the worm 82 is fixedly connected with the end, meshed with a driving motor 84, of the upper end of the upper transverse plate 81 is fixedly connected with the output end of the driving motor 84 and one end of the worm 82.
The upper end fixed mounting of test section 3 has simulated snow mechanism 9, simulated snow mechanism 9 includes the installation shell 91 of body coupling in test section 3 upside, fixedly connected with locating plate 92 in the installation shell 91, fixedly connected with a plurality of water smoke shower nozzles 93 on the locating plate 92, still fixedly connected with a plurality of liquid nitrogen shower nozzles 94 that lie in between two adjacent water smoke shower nozzles 93 on the locating plate 92, liquid nitrogen shower nozzle 94 is Y-shaped structure, the intercommunication has same water passage pipeline 95 on a plurality of water smoke shower nozzles 93, the intercommunication has same liquid nitrogen pipeline 96 on a plurality of liquid nitrogen shower nozzles 94, install high-pressure water pump 97 on the water passage pipeline 95, install liquid nitrogen pump 98 on the liquid nitrogen pipeline 96.
The step groove 10 has been seted up to the lower extreme of test section 3, and correspond step groove 10 internal fixation joint has mounting panel 11, pass through locking mechanism 12 fixed joint between test section 3 and the mounting panel 11, locking mechanism 12 includes the first U-shaped locking plate 121 of fixed connection at test section 3 lower extreme and the second U-shaped locking plate 122 of fixed connection at the mounting panel 11 lower extreme, the card has inserted card solid board 123 between relative first U-shaped locking plate 121 and the second U-shaped locking plate 122, pass through locking bolt fixed connection between first U-shaped locking plate 121 and second U-shaped locking plate 122 and the card solid board 123.
The lower extreme fixed mounting of mounting panel 11 has rotating electrical machines 13, the upper end output of rotating electrical machines 13 runs through the upper end of mounting panel 11, and fixedly connected with rotatory layer board 14, the upper end fixedly connected with house model 15 of rotatory layer board 14, photovoltaic electric plate model 16 has been installed to the upper end of house model 15, still evenly distributed installs a plurality of atress load visual display mechanism 17 on rotatory layer board 14, atress load visual display mechanism 17 includes a plurality of transparent measurement stay tubes 171 of fixed connection in rotatory layer board 14 upper end, transparent measurement stay tube 171's pipe wall external fixation has scale 172, offer in the rotatory layer board 14 with transparent measurement stay tube 171 lower extreme intercommunication's stock solution chamber 173, the interior colored liquid of stock solution chamber 173 stores, the upper end screw thread connection of rotatory layer board 14 corresponds stock solution chamber 173 has unidirectional air compensating valve 174, be equipped with piston 175 in transparent measurement stay tube 171's the lower extreme pipe wall, transparent measurement stay tube 171's inner wall top fixedly connected with electromagnetism piece 176, piston 175's upper end fixedly connected with permanent magnetism piece 177.
The upper end of the stress load visual display mechanism 17 is fixedly provided with a load pressure sensing self-feedback mechanism 18 which is abutted against the top of the inner wall of the house model 15, the load pressure sensing self-feedback mechanism 18 comprises a support plate 181 fixedly connected to the upper end of the transparent measurement support tube 171, the upper end of the support plate 181 is fixedly connected with a sealing shell 182, the upper end of the sealing shell 182 is fixedly connected with a ceramic membrane 183, and the lower end of the ceramic membrane 183 is printed with a thick film resistor 184.
The upper end of the mounting plate 11 is also fixedly provided with an annular limiting mechanism 19 for stably rotating the rotary supporting plate 14, the annular limiting mechanism 19 comprises a supporting cylinder 191 fixedly connected to the upper end of the mounting plate 11, an annular limiting plate 192 is fixedly sleeved on the outer side of the rotary supporting plate 14, and an annular limiting groove 193 matched with the annular limiting plate 192 in sliding connection is formed in the inner side of the upper end of the supporting cylinder 191.
The outside fixedly connected with synchronous multistage experimental regulation and control mechanism 20 of wind direction regulation and control section 2, synchronous multistage experimental regulation and control mechanism 20 includes fixed circular shell 201, the inner wall center department of fixed circular shell 201 is connected with connecting axle 202 through the bearing rotation, the outside fixedly connected with step motor 203 of fixed circular shell 201, step motor 203's output passes through belt pulley assembly 204 and is connected with the connecting axle 202 transmission, a plurality of position electric connection piece 205 and wind direction electric connection piece 206 are fixedly installed to the inner wall interval of fixed circular shell 201, a wind power electric connection piece 207 has still been fixedly installed to the inner wall of fixed circular shell 201, the extension rod 208 has been fixedly cup jointed to the axle wall that connecting axle 202 is located fixed circular shell 201, the one end fixedly connected with conducting block 209 of extension rod 208.
The principle of operation of the present invention will now be described as follows: through the wind generating section 1, the wind direction regulating section 2, the test section 3, the direct current fan 4, the wind force regulating mechanism 5, the transmission shaft 6, the wind deflector 7, the angle regulating mechanism 8 and the simulated snow making mechanism 9, the direct current fan 4 carries out wind making operation in the wind generating section 1, provides wind force of the whole experiment, regulates the wind direction through a plurality of wind deflectors 7, further acts on the house model 15 in the test section 3 to carry out the experiment, the high pressure water pump 97 and the liquid nitrogen pump 98 draw water source and liquid nitrogen from an external water pipe and a liquid nitrogen pipe, and are matched with the water pipe 95 and the liquid nitrogen pipe 96 to convey water and liquid nitrogen into the water mist spray head 93 and the liquid nitrogen spray head 94, the water mist spray head 93 sprays atomized water, the liquid nitrogen spray head 94 sprays liquid nitrogen, the liquid nitrogen is gasified and absorbs heat, a low-temperature cooling environment is manufactured, the sprayed water is synchronously solidified into snow flakes, and automatically drips down, the snowflakes fall on different positions on the house model 15 under the action of wind power and wind direction, the adjusting motor 55 is started according to the wind power of the experiment required, the adjusting motor 55 drives the adjusting screw 54 to rotate, the adjusting block 56 drives the power receiving piece 57 to relatively move on the resistance wire 53 outside the winding post 52 in cooperation with the limit guide of the guide sliding rod 58, the resistance of the power supply circuit connected with the direct-current fan 4 is changed, when the resistance of the resistance wire 53 is reduced, the current in the whole power supply circuit is increased, the voltage connected with the direct-current fan 4 is increased because the resistance of the direct-current fan 4 is unchanged, the rotating speed of the direct-current fan 4 is further increased, larger wind power is provided, otherwise, the wind power of the direct-current fan 4 can be reduced, when the wind direction is required to be changed, the driving motor 84 is started, the driving motor 84 drives the worm 82 to rotate, the transmission shaft 6 is driven to drive the air deflector 7 to deflect at an angle through the meshing action of the worm 82 and the worm gear 83, so that the experimental wind direction is rapidly changed and adjusted; the wind tunnel based on the wind and snow environment can be constructed completely, stable regulation and control simulation can be carried out on wind power, wind direction and snow amount, and based on experimental simulation of different weather conditions of the house model 15, theoretical verification is obtained in structural reinforcement of house wind and snow resistance design, and accuracy of reinforcement construction is improved;
through the step groove 10, the mounting plate 11, the locking mechanism 12, the rotating motor 13, the rotating supporting plate 14, the house model 15 and the photovoltaic panel model 16, when the house model 15 is mounted in the test section 3, the house model 15 is fixedly connected to the upper end of the rotating supporting plate 14, the mounting plate 11 is clamped and embedded at the lower end of the step groove 10, at the moment, the positions of the first U-shaped locking plate 121 and the second U-shaped locking plate 122 are opposite, the clamping plate 123 is inserted into the first U-shaped locking plate 121 and the second U-shaped locking plate 122, so that the mounting plate 11 and the test section 3 are stably mounted, the rotating motor 13 is started during experiments, the rotating motor 13 drives the rotating plate to rotate, the relative positions of the house model 15 can be quickly adjusted, and then simulation experiments of stress analysis of the house model 15 in different positions are met;
through the stress load visual display mechanism 17 and the load pressure sensing self-feedback mechanism 18, after the experiment of the house model 15, snow on the top of the house model 15 is unevenly distributed, different snow loads are caused to different positions of the house model 15, snow load pressure acts on the house cover, further, load pressure directly acts on the upper surface of the ceramic membrane 183, the membrane generates tiny deformation, the thick film resistor 184 is printed on the back of the ceramic membrane 183 and is connected into a Wheatstone bridge, due to the piezoresistance effect of the piezoresistor, the bridge generates a voltage signal which is in direct proportion to the pressure and in direct proportion to excitation voltage, namely, the larger the load pressure on the top of the house model 15 is, the smaller the resistance is, the larger the power on the electromagnetic block 176 is, the magnetism is stronger, the electromagnetic block 176 and the permanent magnet block 177 are in opposite magnetism, at the moment, the permanent magnet block drives the piston block 175 to move upwards, the colored liquid in the liquid storage cavity 173 is sucked into the transparent measurement support tube 171, the relative visual display of the colored liquid is carried out by matching with the scale 172, the situation that the relative height of the colored liquid can be directly displayed by the aid of the transparent measurement support tube 171, and the stress load can be better displayed by the position of the house model 15, and the stress resistance can be better against the situation of the strong wind-stressed position of the house model 15, and the stress situation can be improved by using the different positions of the stress-resistant performance of the house model;
through the synchronous multistage experimental regulation and control mechanism 20 that sets up, start step motor 203 in the test, step motor 203 passes through belt pulley assembly 204 and drives connecting axle 202 synchronous rotation, and then drive extension rod 208 drives conducting block 209 and shift in fixed circular shell 201 internal rotation, when conducting block 209 and position electric connection piece 205 contact, the intercommunication is to the power supply circuit of rotating electrical machines 13, make rotating electrical machines 13 drive house model 15 rotatory, regulate and control different experimental orientations of house model 15, and after house model 15 is rotatory a week, at this moment conducting block 209 removes to wind direction electric connection piece 206 department, the intercommunication is to the power supply circuit of driving motor 84, and then carry out quantitative regulation to the angle of aviation baffle 7, after all wind direction angles of aviation baffle 7 all are experimental to accomplish, at this moment conducting block 209 removes to wind direction electric connection piece 207 department, the intercommunication is to the power supply circuit of accommodate motor 55, and then adjust wind power size, and at this moment synchronous intercommunication is to the reverse power supply circuit of driving motor 84, make aviation baffle 7 reset to initial position, carry out the experimental preparation of next stage, can be automatic to the experimental orientation of house model 15, wind direction angle and intensity of wind direction electric connection piece 206, the manual operation of stage is carried out, the manual intervention operation such as to the automatic stage is satisfied, the automatic experiment is more accurate, the automatic regulation and control quality is tested, the demand of the snow is more accurate is met, the step-by stage experiment has been guaranteed.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (6)
1. The wind and snow environment wind tunnel simulation device comprises a wind generation section (1), a wind direction regulating section (2) and a test section (3), and is characterized in that a direct-current fan (4) is fixedly arranged in the wind generation section (1), a wind regulating mechanism (5) is fixedly arranged at the upper end of the wind generation section (1), a plurality of wind deflectors (7) which are arranged up and down are rotatably connected to the inner wall of one side of the wind direction regulating section (2) on the front side and the rear side through a transmission shaft (6), an angle regulating mechanism (8) which is used for driving the transmission shaft (6) to rotate is fixedly arranged at the outer side of the wind direction regulating section (2), a simulated snow making mechanism (9) is fixedly arranged at the upper end of the test section (3), a step groove (10) is formed in the lower end of the test section (3), a mounting plate (11) is fixedly clamped in the corresponding step groove (10), a rotating motor (13) is fixedly arranged at the lower end of the mounting plate (11) through a locking mechanism (12), a rotating model (15) is fixedly arranged at the upper end of the rotating motor (13), a model (15) is fixedly connected to the upper end of the rotating model (14), a plurality of stress load visual display mechanisms (17) are uniformly distributed and installed on the rotary supporting plate (14), a load compression sensing self-feedback mechanism (18) which is propped against the top of the inner wall of the house model (15) is fixedly arranged at the upper end of the stress load visual display mechanism (17), an annular limiting mechanism (19) for stably rotating the rotary supporting plate (14) is fixedly installed at the upper end of the mounting plate (11), and a synchronous multistage experiment regulation mechanism (20) is fixedly connected to the outer side of the wind direction regulation section (2);
the visual display mechanism (17) for the stress load comprises a plurality of transparent measurement supporting pipes (171) fixedly connected to the upper ends of the rotary supporting plates (14), graduated scales (172) are fixedly arranged outside the pipe walls of the transparent measurement supporting pipes (171), liquid storage cavities (173) communicated with the lower ends of the transparent measurement supporting pipes (171) are formed in the rotary supporting plates (14), colored liquid is stored in the liquid storage cavities (173), unidirectional air supplementing valves (174) are connected to the upper ends of the rotary supporting plates (14) corresponding to the liquid storage cavities (173) in a threaded mode, piston blocks (175) are arranged in the pipe walls of the lower ends of the transparent measurement supporting pipes (171), electromagnetic blocks (176) are fixedly connected to the tops of the inner walls of the transparent measurement supporting pipes (171), permanent magnet blocks (177) are fixedly connected to the upper ends of the piston blocks (175), and the electromagnetic blocks (176) and the permanent magnet blocks (177) are of opposite magnetism;
the load pressure sensing self-feedback mechanism (18) comprises a supporting plate (181) fixedly connected to the upper end of the transparent measurement supporting tube (171), the upper end of the supporting plate (181) is fixedly connected with a sealing shell (182), the upper end of the sealing shell (182) is fixedly connected with a ceramic diaphragm (183), and the lower end of the ceramic diaphragm (183) is printed with a thick film resistor (184);
synchronous multistage experimental regulation and control mechanism (20) are including fixed circle shell (201), the inner wall center department of fixed circle shell (201) is connected with connecting axle (202) through the bearing rotation, the outside fixedly connected with step motor (203) of fixed circle shell (201), the output of step motor (203) is connected with connecting axle (202) transmission through belt pulley assembly (204), a plurality of position electric connection piece (205) and wind direction electric connection piece (206) are installed to the inner wall interval fixation of fixed circle shell (201), a wind power electric connection piece (207) are still fixedly installed to the inner wall of fixed circle shell (201), extension rod (208) have been cup jointed to the axle wall fixed that connecting axle (202) are located fixed circle shell (201), one end fixedly connected with conducting block (209) of extension rod (208).
2. The wind and snow environment wind tunnel simulation device according to claim 1, wherein the wind force regulation mechanism (5) comprises an insulating shell (51), a winding column (52) is fixedly arranged at the bottom of the inner wall of the insulating shell (51), a resistance wire (53) is wound outside the winding column (52), an adjusting screw (54) is rotatably connected to the inner wall of one side opposite to the upper end of the insulating shell (51) through a bearing, an adjusting motor (55) is fixedly arranged at the outer side of the insulating shell (51), the output end of the adjusting motor (55) is fixedly connected with one end of the adjusting screw (54), an adjusting block (56) is further sheathed on the rod wall of the adjusting screw (54) through threads, a power connection piece (57) in contact with the resistance wire (53) is fixedly connected to the lower end of the adjusting block (56), a guide sliding rod (58) is fixedly arranged on the inner wall of one side opposite to the upper end of the insulating shell (51), and a sliding hole in sliding connection with the guide sliding rod (58) is formed in the side wall of the adjusting block (56).
3. The wind and snow environment wind tunnel simulation device according to claim 1, wherein the angle adjusting mechanism (8) comprises two transverse plates (81) which are vertically symmetrically and fixedly connected to the outer side of the wind direction adjusting section (2), a worm (82) is rotatably connected between the two transverse plates (81), one end of the transmission shaft (6) penetrates through the outer side of the wind direction adjusting section (2), a worm wheel (83) meshed with the worm (82) is fixedly connected, a driving motor (84) is fixedly connected to the upper end of the transverse plate (81) on the upper side, and the output end of the driving motor (84) is fixedly connected with one end of the worm (82).
4. The wind and snow environment wind tunnel simulation device according to claim 1, wherein the simulated snow making mechanism (9) comprises an installation shell (91) integrally connected to the upper side of the test section (3), a positioning plate (92) is fixedly connected to the installation shell (91), a plurality of water spray nozzles (93) are fixedly connected to the positioning plate (92), a plurality of liquid nitrogen spray nozzles (94) located between two adjacent water spray nozzles (93) are fixedly connected to the positioning plate (92), the liquid nitrogen spray nozzles (94) are of a Y-shaped structure, a plurality of water spray nozzles (93) are communicated with one water pipeline (95), a plurality of liquid nitrogen spray nozzles (94) are communicated with one liquid nitrogen pipeline (96), a high-pressure water pump (97) is arranged on the water pipeline (95), and a liquid nitrogen pump (98) is arranged on the liquid nitrogen pipeline (96).
5. The wind and snow environment wind tunnel simulation device according to claim 1, wherein the locking mechanism (12) comprises a first U-shaped locking plate (121) fixedly connected to the lower end of the test section (3) and a second U-shaped locking plate (122) fixedly connected to the lower end of the mounting plate (11), a clamping plate (123) is inserted between the first U-shaped locking plate (121) and the second U-shaped locking plate (122), and the first U-shaped locking plate (121) and the second U-shaped locking plate (122) are fixedly connected with the clamping plate (123) through locking bolts.
6. The wind and snow environment wind tunnel simulation device according to claim 1, wherein the annular limiting mechanism (19) comprises a supporting cylinder (191) fixedly connected to the upper end of the mounting plate (11), an annular limiting plate (192) is fixedly sleeved on the outer side of the rotary supporting plate (14), and an annular limiting groove (193) matched with the annular limiting plate (192) in sliding connection is formed in the inner side of the upper end of the supporting cylinder (191).
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