CN110542531A - Material model environment experiment bin based on improvement of coal power generation efficiency - Google Patents
Material model environment experiment bin based on improvement of coal power generation efficiency Download PDFInfo
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- CN110542531A CN110542531A CN201910873069.8A CN201910873069A CN110542531A CN 110542531 A CN110542531 A CN 110542531A CN 201910873069 A CN201910873069 A CN 201910873069A CN 110542531 A CN110542531 A CN 110542531A
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- 239000000463 material Substances 0.000 title claims abstract description 44
- 238000002474 experimental method Methods 0.000 title claims abstract description 16
- 239000003245 coal Substances 0.000 title claims abstract description 14
- 238000010248 power generation Methods 0.000 title abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 48
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims description 24
- 230000008602 contraction Effects 0.000 claims description 18
- 230000007613 environmental effect Effects 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000009792 diffusion process Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010024796 Logorrhoea Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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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
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a material model environment experiment bin based on improvement of coal power generation efficiency. The method comprises the following steps: the wind tunnel comprises a wind tunnel body which is at least provided with a power section and is shaped like a Chinese character 'hui', wherein at least one group of corresponding nozzle sections are arranged on the wind tunnel body, the nozzle sections are used for being connected with a material model to be tested, and a door sealing structure is arranged at the downstream position of each nozzle section along the advancing direction of airflow. The device disclosed by the embodiment of the invention can realize different detection requirements of various tests, has strong functionality, reduces the test cost, and greatly improves the test accuracy and the test efficiency.
Description
Technical Field
The invention relates to the technical field of hydromechanics, in particular to a material model environment experiment bin based on improvement of coal power generation efficiency.
Background
The thermal power generation process includes: combustible materials (such as coal) are heated to generate steam during combustion, chemical energy of the fuel is converted into heat energy, the steam pressure pushes a steam turbine to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives a generator to rotate, and the mechanical energy is converted into electric energy. In the energy conversion process, a series of pipeline connecting devices are involved, wherein the energy is influenced most obviously by external environment wind in the transmission process, and in order to reduce energy loss and improve the power generation efficiency, a material model of a pipeline connecting structure of a power plant is manufactured and a wind tunnel test is carried out on the material model when people design pipelines.
In the correlation technique, the material model research device is comparatively single, often needs many sets of testing arrangement to the work simulation of material model under the pressure environment of difference or different operating condition, has not only increased experimental cost, and the installation is comparatively convenient, and the calibration of parameter is comparatively complicated between the different equipment, greatly increased experimental implementation degree of difficulty.
Disclosure of Invention
In order to overcome the problems in the related art, improve the functionality of a material model testing device and reduce the testing difficulty, the invention discloses and provides a material model environment testing bin based on the improvement of coal power generation efficiency.
The utility model provides a based on improve coal generating efficiency material model environment experiment storehouse which characterized in that includes: the wind tunnel comprises a wind tunnel body which is at least provided with a power section and is shaped like a Chinese character 'hui', wherein at least one group of corresponding nozzle sections are arranged on the wind tunnel body, the nozzle sections are used for being connected with a material model to be tested, and a door sealing structure is arranged at the downstream position of each nozzle section along the advancing direction of airflow.
In a possible implementation mode, the nozzle section comprises a first nozzle section and a second nozzle section along the advancing direction of the airflow, the first nozzle section and the second nozzle section are respectively located on two sides of the power section, and a gas-solid injector, a material model and a dust removal device are sequentially connected between the first nozzle section and the second nozzle section.
In a possible implementation manner, the door sealing structure is connected with the wind tunnel body through a flange, the door sealing structure comprises a door frame and a revolving door, the revolving door is connected with a rotating handle through a connecting shaft, and the revolving door is driven to rotate through the rotating handle.
In a possible implementation mode, the juncture of the outer edge of the revolving door and the door frame is provided with a step structure, the step structure comprises a first sheet metal part and a second sheet metal part, the distance between the first sheet metal part and the inner wall of the wind tunnel body is smaller than that between the second sheet metal part, and the inner wall of the wind tunnel body is provided with a fixed block.
In a possible implementation manner, a rubber pad is arranged between the first sheet metal part and the second sheet metal part.
In a possible realization, the outside of the flange is provided with a sealing cover.
In a possible implementation manner, a plurality of test sections are continuously arranged on the wind tunnel body, and the plurality of tests are movably connected with one another.
In a possible implementation manner, the wind tunnel body is further provided with a contraction section, the contraction section is connected with one end of the test section, and the inner diameter of an inlet of the contraction section is larger than the inner diameter of an outlet of the contraction section along the advancing direction of the airflow.
In a possible implementation manner, a stable section is arranged at the upstream position of the contraction section along the air flow advancing direction, and a honeycomb device and at least one layer of damping net are sequentially arranged in the stable section along the air flow direction.
In one possible implementation, the honeycomb is made of stainless steel material.
In a possible realization mode, a downstream position of the test section and a downstream position of the power section are respectively provided with a first diffusion section and a second diffusion section along the airflow advancing direction.
In a possible implementation manner, the power section, the first diffusion section of the stabilizing section and the second diffusion section are all provided with access holes.
In a possible implementation manner, corner sections are respectively arranged at four corner positions of the wind tunnel body, and flow deflectors are arranged in the corner sections.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: the invention discloses a wind tunnel body in a shape like a Chinese character 'hui', which is used for closed wind tunnel test simulation, such as the test of a pitot tube and an anemometer, wherein a nozzle section is arranged on the wind tunnel body in the shape like the Chinese character 'hui', and is used for connecting a material to be tested, a material model to be tested can be connected with a single nozzle section for test in an open environment, and can also be simultaneously connected with a group of corresponding nozzle sections for test in a closed environment.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as disclosed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the present disclosure.
FIG. 1 is a schematic diagram illustrating an environmental experimental bin based on a material model for improving coal power generation efficiency according to an exemplary embodiment.
FIG. 2 is a schematic diagram of an environmental experimental bin based on a material model for improving coal power generation efficiency according to an exemplary embodiment.
FIG. 3 is a schematic diagram illustrating an environmental experimental bin based on a material model for improving coal power generation efficiency according to an exemplary embodiment.
Fig. 4 is a schematic structural diagram illustrating a door sealing structure according to an exemplary embodiment.
Fig. 5 is a sectional view taken in the direction of a-a in fig. 4.
Fig. 6 is an enlarged view at C in fig. 5.
Fig. 7 is an enlarged view at B in fig. 4.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
Fig. 1-3 are block diagrams illustrating a material model environmental experimental bin based on improving coal power generation efficiency according to an exemplary embodiment. Referring to fig. 1, a material model environment experiment bin based on improving coal power generation efficiency includes: the wind tunnel comprises a wind tunnel body 1 which is at least provided with a power section 3 and is shaped like a Chinese character 'hui', wherein at least one group of corresponding nozzle sections are arranged on the wind tunnel body 1, the nozzle sections are used for being connected with a material model to be tested, and a door sealing structure 2 is arranged at the downstream position of each nozzle section along the advancing direction of airflow.
In the embodiment of the invention, the wind tunnel body in the shape of the Chinese character 'hui' comprises closed wind tunnel structures which are connected end to end, the shape of the wind tunnel body is not limited to the Chinese character 'hui', and the wind tunnel body can be in the shape of a ring, an ellipse and the like, and is not limited herein. The wind tunnel body at least comprises a power section 3, and the power section 3 is used for providing a power source for the whole wind tunnel equipment to form airflows with different wind speeds, such as 0-30m/s wind or 0-60m/s wind. After the airflow is generated by the power section, the airflow flows to a preset direction and along the airflow advancing direction, and the downstream position refers to a position which is passed by the airflow at the next moment by taking the current position as a reference object in the primary airflow circulation process. The material model comprises: in order to reduce energy loss and improve power generation efficiency, a material model of a pipeline connecting structure of a power plant is manufactured when people design pipelines.
In the embodiment of the invention, at least one group of corresponding nozzle sections is arranged on the wind tunnel body 1, as shown in fig. 1, in the embodiment of the invention, each group of corresponding nozzle sections comprises a first nozzle section 4 and a second nozzle section 5, the nozzle sections are used for connecting a material model to be tested, in one example, as shown in fig. 3, the material model is connected between the first nozzle section 4 and the second nozzle section 5 and is simultaneously connected with the first nozzle section 4 and the second nozzle section 5, a door sealing structure 2 at the downstream position of the nozzle sections is closed, and at this time, airflow from the power section 3 sequentially passes through the first nozzle section 4, the material model and the second nozzle section 5 and then returns to the power section 3, so that a closed-loop circulation wind tunnel test environment is formed. In another example, referring to fig. 2, the material model is connected to the first nozzle section 4 only, the door sealing structure 2 is closed, and the airflow from the power section 3 passes through the first nozzle section 4 and the material model in sequence, so as to form an open wind tunnel test environment. In another example, the nozzle section is not connected with the material model, the door sealing structure 2 is in an open state, that is, the airflow can pass through the door sealing structure 2, and at this time, small objects with measurement, such as a pitot tube, an anemometer and the like, can be placed in the test section of the wind tunnel body shaped like a Chinese character 'hui', and the test is performed. Therefore, the invention discloses a material model experiment bin with multiple functional purposes. It should be noted that the installation manner of the nozzle segments is not limited to the above examples, for example, the nozzle segments are installed on the vertical pipeline of the wind tunnel body 1, and different nozzle segments are selected according to actual needs to be used in combination according to needs.
The invention discloses a wind tunnel body in a shape like a Chinese character 'hui', which is used for simulating a closed material model experiment bin, such as the test of a pitot tube and an anemometer, wherein a nozzle section is arranged on the wind tunnel body in the shape like the Chinese character 'hui', and is used for connecting a material to be tested, the material model to be tested can be connected with a single nozzle section for carrying out the test in an open environment, and can also be simultaneously connected with a group of corresponding nozzle sections for carrying out the test in a closed environment.
In a possible implementation manner, along the advancing direction of the airflow, the nozzle section comprises a first nozzle section 4 and a second nozzle section 5, the first nozzle section 4 and the second nozzle section 5 are respectively located at two sides of the power section 3, and a gas-solid injector 6, a material model 7 and a dust removal device 8 are sequentially connected between the first nozzle section 4 and the second nozzle section 5.
In the embodiment disclosed by the invention, a gas-solid injector 6, a material model 7 and a dust removal device 8 are sequentially connected between the first nozzle section 4 and the second nozzle section 5, so that a powder injection experiment (coal carbon powder) of the material model can be researched, the gas-solid injector 6 is conventional technical equipment and can be purchased, the injection amount of the gas-solid injector 6 can be adjusted, and the dust removal device is additionally arranged at the rear end of the material model, so that the sprayed powder can be absorbed, and the test environment is protected. The embodiment of the invention adds the function of the powder spraying test on the basis of the original test types by adding the gas-solid injector 6 and the dust removal device 8, and further expands the functionality of the environmental test bin.
Fig. 4 is a schematic structural diagram illustrating a door sealing structure according to an exemplary embodiment. As shown with reference to fig. 4. The door sealing structure 2 is connected with the wind tunnel body 1 through a flange 18, the door sealing structure 2 comprises a door frame 20 and a rotating door 21, the rotating door 21 is connected with a rotating handle 16 through a connecting shaft 17, and the rotating door 21 is driven to rotate through the rotating handle 16. When the revolving door is perpendicular to the paper surface direction, the air flow advancing direction is the same as the revolving door, and the revolving door is also perpendicular to the paper surface direction, the door sealing structure 2 is in an open state, and the air flow can flow through the passage at the time, and when the revolving door is parallel to the paper surface direction, the air flow advancing direction is still perpendicular to the paper surface direction, and the air flow is blocked by the revolving door 21 and cannot flow through the passage at the time. The sealing door disclosed by the invention is simple in structure and reasonable in design.
In a possible implementation manner, as shown in fig. 5 and 6, a step-shaped structure is arranged at a boundary between the outer edge of the rotating door 21 and the door frame 20, the step-shaped structure includes a first sheet metal part 22 and a second sheet metal part 23, a distance between the first sheet metal part 22 and the inner wall of the wind tunnel body 1 is smaller than a distance between the second sheet metal part 23, and the inner wall of the wind tunnel body 1 is provided with a fixing block 25. The invention discloses that the distance of the second sheet metal part 23 is greater than that of the first sheet metal part 22, the tail ends of the second sheet metal part 23 and the first sheet metal part 22 form a step-shaped structure of the tail end 21 of the revolving door, the revolving door 21 can stay at a fixed position by fixing the rotation of the revolving door 21 through a fixing block 25, in one example, the other end of the revolving door 21 is also provided with the step-shaped structure, so that the fixing is more stable, and as shown in a reference figure 5, the revolving door can be well fixed no matter the airflow direction flows from left to right or from right to left, so that the airflow blocking effect is achieved.
In a possible implementation manner, a rubber pad 24 is arranged between the first sheet metal part 22 and the second sheet metal part 23, and the sealing effect is enhanced by arranging the rubber pad between the first sheet metal part 22 and the second sheet metal part 23.
In a possible implementation, as shown in fig. 7, the sealing cover (19) is provided on the outer side of the flange (18) to prevent the air flow from escaping from the structural connection between the flange and the wind tunnel body 1, thereby further enhancing the sealing effect.
In a possible implementation manner, a plurality of test sections, such as a first test section 91, a second test section 92 and a third test section 93, are continuously arranged on the wind tunnel body 1, and the plurality of test sections are movably connected with one another. The plurality of test sections are movably connected, so that the installation of the environmental test bin is facilitated, and the test sections are too large in size and not beneficial to transportation in some special installation environments such as a roof, so that the test sections are movably connected, and the installation and the use of the device are facilitated.
In a possible implementation manner, the wind tunnel body 1 is further provided with a contraction section 12, the contraction section 12 is connected with one end of the test section 9, and along the advancing direction of the airflow, the inner diameter of an inlet of the contraction section 12 is larger than the inner diameter of an outlet of the contraction section 12. The inner diameter of the inlet of the contraction section 12 can be 1.25m, the inner diameter of the outlet of the contraction section 12 can be 0.7m, and the contraction section 12 can uniformly accelerate the airflow to meet the wind speed required by the test section.
In a possible implementation manner, a stable section 13 is arranged at the upstream position of the contraction section 12 along the airflow advancing direction, and a honeycomb device and at least one layer of damping net are sequentially arranged in the stable section along the airflow direction. The damping mesh is woven from stainless steel wires, and the aperture ratio may include 64%. The honeycomb is selected as a regular hexagonal honeycomb cell, the cell-to-cell distance may include 16mm, and the cell length may include 220 mm. The stable section can accelerate the air flow, and the required air speed of the test section is met.
In one possible implementation, the honeycomb is made of stainless steel material. The main equipment of wind-tunnel flow field rectification is regarded as to the honeycomb ware, and its performance influences greatly to the flow field index, and present wind-tunnel honeycomb ware adopts glass steel construction more, and this kind of structure is with low costs, and is not environmental protection, has the garrulous end to produce, has the silk deckle edge, and the structure appearance is yielding, and it is different between a plurality of regular hexagonal holes, influences the experimental section flow field. The embodiment disclosed by the invention adopts the stainless steel thin-wall honeycomb device, so that the resistance is small, the environment is protected, each regular hexagonal honeycomb tube is manufactured through the die, the structural strength is high, the deformation is avoided, the consistency of a plurality of honeycomb tubes is ensured, the air flow is not interfered, and the rectification effect is good.
In a possible realization, the downstream position of the test section and the downstream position of the power section 3, in the direction of advance of the gas flow, are provided with a first diffuser section 14 and a second diffuser section 15, respectively. According to the embodiment disclosed by the invention, the first diffusion section 14 and the second diffusion section 15 are arranged on the more important power section 3 and the more important test section, and the diffusion sections recover the kinetic energy of the airflow into pressure energy, so that the energy loss of the airflow at each section at the downstream of the diffusion sections is reduced.
In a possible realization mode, the power section 3, the stabilizing section 13, the first diffusion section 14 and the second diffusion section 15 are provided with service holes. The disclosed embodiment of the invention needs frequent maintenance positions, such as the stable section 13, the diffusion section, the power section 3 and the like, and is provided with access holes, thereby facilitating detection and maintenance. And other positions can be provided with manholes according to needs, and the disclosed embodiment of the invention is not limited.
In a possible implementation manner, corner sections 10 are respectively arranged at four corner positions of the wind tunnel body 1, and a flow deflector 11 is arranged in each corner section 10. The embodiment of the invention arranges the flow deflectors with different numbers in the corner section 10 to guide the airflow, thereby reducing the energy loss and improving the flow field quality.
Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It is to be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the terms of the appended claims.
Claims (10)
1. The utility model provides a based on improve coal generating efficiency material model environment experiment storehouse which characterized in that includes: the wind tunnel comprises a wind tunnel body (1) which is at least provided with a power section (3) and is shaped like a Chinese character 'hui', wherein at least one group of corresponding nozzle sections are arranged on the wind tunnel body (1), the nozzle sections are used for being connected with a material model to be tested, and a door sealing structure (2) is arranged at the downstream position of each nozzle section along the advancing direction of airflow.
2. The environmental experiment bin according to claim 1, wherein the nozzle section comprises a first nozzle section (4) and a second nozzle section (5) along the airflow advancing direction, the first nozzle section (4) and the second nozzle section (5) are respectively positioned at two sides of the power section (3), and a gas-solid injector (6), a material model (7) and a dust removal device (8) are sequentially connected between the first nozzle section (4) and the second nozzle section (5).
3. The environmental experiment chamber according to claim 1, wherein the door sealing structure (2) is connected with the wind tunnel body (1) through a flange (18), the door sealing structure (2) comprises a door frame (20) and a revolving door (21), the revolving door (21) is connected with a rotating handle (16) through a connecting shaft (17), and the revolving door (21) is driven to rotate by the rotating handle (16).
4. The environmental experiment chamber according to claim 3, wherein a step-shaped structure is arranged at the junction of the outer edge of the rotary door (21) and the door frame (20), the step-shaped structure comprises a first sheet metal part (22) and a second sheet metal part (23), the distance between the first sheet metal part (22) and the inner wall of the wind tunnel body (1) is less than the distance between the second sheet metal part (23), and a fixing block (25) is arranged on the inner wall of the wind tunnel body (1); a rubber pad (24) is arranged between the first sheet metal part (22) and the second sheet metal part (23); and a sealing cover (19) is arranged on the outer side of the flange (18).
5. The environmental experiment bin according to claim 1, wherein a plurality of test sections (9) are continuously arranged on the wind tunnel body (1), and are movably connected with each other.
6. The environmental experiment bin according to claim 7, wherein the wind tunnel body (1) is further provided with a contraction section (12), the contraction section (12) is connected with one end of the test section (9), and the inner diameter of an inlet of the contraction section (12) is larger than the inner diameter of an outlet of the contraction section (12) along the advancing direction of the airflow.
7. The environmental test chamber according to claim 8, characterized in that, along the direction of air flow advance, the upstream position of the contraction section (12) is provided with a stable section (13), and a honeycomb device and at least one layer of damping net are arranged in the stable section in sequence along the direction of air flow.
8. Environmental test chamber according to claim 7, characterized in that downstream of the test section and downstream of the power section (3) in the direction of gas flow advance there is a first diffuser section (14) and a second diffuser section (15), respectively.
9. The environmental testing chamber according to claim 11, wherein the power section (3), the stabilizing section (13), the first diverging section (14) and the second diverging section (15) are provided with access holes.
10. The environmental experiment chamber according to any one of claims 1 to 12, wherein corner sections (10) are respectively arranged at four corner positions of the wind tunnel body (1), and flow deflectors (11) are arranged in the corner sections (10).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307394A (en) * | 2020-03-09 | 2020-06-19 | 西南交通大学 | Multistage power controllable backflow type wind tunnel |
| CN113959671A (en) * | 2021-10-22 | 2022-01-21 | 中国科学院新疆生态与地理研究所 | But two straight-through closed circulation wind-tunnel laboratories |
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| CN107436220A (en) * | 2017-07-19 | 2017-12-05 | 国网福建省电力有限公司 | A kind of reverse-flow type frequency control multi-fan array wind-tunnel and its test method |
| CN110333043A (en) * | 2019-05-20 | 2019-10-15 | 广东工业大学 | A kind of convenient small-sized Near Surface Atmospheric Boundary Layer wind-tunnel and its application in the assessment of crowd's risk exposure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111307394A (en) * | 2020-03-09 | 2020-06-19 | 西南交通大学 | Multistage power controllable backflow type wind tunnel |
| CN111307394B (en) * | 2020-03-09 | 2021-08-24 | 西南交通大学 | Multistage power controllable backflow type wind tunnel |
| CN113959671A (en) * | 2021-10-22 | 2022-01-21 | 中国科学院新疆生态与地理研究所 | But two straight-through closed circulation wind-tunnel laboratories |
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