CN210834084U - Wind tunnel device of wind turbine - Google Patents
Wind tunnel device of wind turbine Download PDFInfo
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- CN210834084U CN210834084U CN201922273484.8U CN201922273484U CN210834084U CN 210834084 U CN210834084 U CN 210834084U CN 201922273484 U CN201922273484 U CN 201922273484U CN 210834084 U CN210834084 U CN 210834084U
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Abstract
The utility model discloses a wind turbine wind tunnel device belongs to aerodynamic technical field. The hole body structure of the wind tunnel device of the wind turbine comprises a gas collection section, a power section front section, a fan, a power section rear section, a diffusion section, a stabilization section, a contraction section and a test section, wherein a fairing is installed in the power section, the diffusion section comprises an access door and a separation net, the stabilization section comprises a honeycomb device, a damping net and an access door, and an observation window is arranged in a working section of the test section. The utility model discloses can not only satisfy the needs of agriculture and forestry spraying operation experiment (droplet drift, spraying flow field, air current field, droplet particle diameter), but also can make things convenient for and test instrument cooperation to use.
Description
Technical Field
The utility model belongs to the technical field of the aerodynamics, concretely relates to wind turbine wind tunnel device. The space and the strength of the wind tunnel experiment area can meet the requirements of agriculture and forestry spray operation experiments (fog drop drifting, a spray flow field, an airflow field and the fog drop particle size), and can be conveniently matched with a test instrument for use.
Background
A wind tunnel is a type of pipeline experimental equipment that can manually generate and control a flow of gas to simulate the flow of gas around an aircraft or object, and can measure the effect of the flow of gas on the object and observe physical phenomena. With the progress of science and technology, wind tunnels develop in the direction of high Reynolds number, low noise, good flow field index and uniformity.
As the wind power market is valued, wind turbines have recently been developed and applied more and more widely. The wind turbine blade is one of core components for acquiring wind energy, and the pneumatic performance of the wind turbine blade determines the wind energy utilization rate, the load characteristic, the noise level and the like of a wind driven generator. In the related technology, the wind tunnel test device has large energy consumption, large air flow deflection angle and low stability and uniformity of the flow field, and the accuracy of the wind tunnel test is directly influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a wind energy conversion system wind-tunnel is put. Can satisfy agriculture and forestry spraying operation experiment, can conveniently use with test instrument cooperation moreover.
To achieve the above object, the solution of the present invention is as follows: a wind tunnel device of a wind turbine comprises a gas collection section, a power section front section, a fan, a power section rear section, a diffusion section, a stabilization section, a contraction section and a test section which are sequentially communicated along the airflow direction; the front section of the power section comprises a fairing front cover; the power section rear section comprises a fairing rear cover; the diffusion section comprises an access door and a separation net; the stabilizing section comprises a honeycomb device, a damping net and an access door; the test section includes an observation window.
Preferably, the hole body is of a direct current suction type, and the structure of the hole body is of a steel structure.
Preferably, the body of the wind tunnel is provided with a power section, the power section comprises a power section front section, a fan and a power section rear section, the power section front section comprises a fairing front cover, and the power section rear section comprises a fairing rear cover.
Preferably, a fan is arranged on the body of the hole body and is arranged between the front section of the power section and the rear section of the power section.
Preferably, the diffusion section is located behind the power section, an access door is arranged on the diffusion section, and a separation net is arranged in the diffusion section.
Preferably, the wind tunnel body is provided with a stabilizing section, a honeycomb device and a damping net are installed in the stabilizing section, the stabilizing section is provided with an access door, and the cross section of the honeycomb device is in the shape of a regular hexagon as the best.
Preferably, the wind tunnel body is provided with a contraction section, the contraction section comprises an inlet section and an outlet section, the inlet section is connected with the stabilization section, and the outlet section is connected with the contraction section.
Preferably, the wind tunnel body is provided with a test section, the test section is provided with an observation window, the observation window is made of transparent glass, and the transparent glass is organic toughened glass in a step shape.
The utility model has the advantages that:
(1) the fan and its accessory facilities (such as fairing, anti-rotation piece, etc.) are installed in the power section of said device, and can supplement energy to the air flow in the wind tunnel to ensure that the air flow can be maintained at a certain speed.
(2) The wind tunnel has higher contraction ratio, can uniformly accelerate the air flow, enables the air flow to reach the flow speed required by the test section, further improves the flow quality of the air flow, reduces the turbulence degree and improves the energy ratio of the wind tunnel.
(3) The device is provided with an observation window on the test section, which is convenient for observing and replacing the test article. And the stable section and the diffusion section are provided with access doors, so that the detection and maintenance are convenient.
(4) According to the wind tunnel, the damping net and the honeycomb device are arranged in the stabilizing section, so that the stability and uniformity of airflow are better guaranteed, the influence caused by turbulent flow is reduced, and the flow field quality of a test section is guaranteed. The device is equipped with the radome fairing in the power section, can effectual separation air current, improves the stability of air current.
(5) The wind tunnel experiment is carried out indoors, is generally not influenced by changes of atmospheric environment, can be continuously carried out, and is high in equipment utilization rate and reasonable in equipment structure.
Drawings
Fig. 1 is a front view of the present invention;
reference numerals: 1. the gas collection section 2, the power section front section 21, the fairing front cover 3, the fan 4, the power section rear section 41, the fairing rear cover 5, the diffusion section 51, the access door 52, the separation net 6, the stabilization section 61, the honeycomb device 62, the damping net 63, the access door 7, the contraction section 8, the test section 81 and the observation window.
Detailed Description
Various exemplary embodiments, features and aspects of the present invention will be described in detail below with reference to the accompanying drawings. The technical scheme of the embodiment of the utility model is clearly and completely described.
As shown in FIG. 1, the present invention discloses a wind tunnel device for a wind turbine.
A wind tunnel device of a wind turbine comprises a gas collection section 1, a power section front section 2, a fan 3, a power section rear section 4, a diffusion section 5, a stabilization section 6, a contraction section 7 and a test section 8 which are sequentially communicated along the airflow direction; the power section front section 2 comprises a fairing front cover 21; the power section rear section 4 includes a cowling rear cover 41; the diffusion section 5 comprises an access door 51 and a separation net 52; the stabilizing section 6 comprises a honeycomb device 61, a damping net 62 and an access door 63; the test section 8 comprises a viewing window 81.
The wind tunnel is characterized in that a gas collection section 1 is arranged on the wind tunnel body, the gas collection section 1 comprises an air inlet end and an air outlet end, the cross section area from the air inlet end of the gas collection section 1 to the air outlet end is gradually reduced, and the air outlet end is connected with the power section front section 2.
The wind tunnel comprises a wind tunnel body and is characterized in that a power section is arranged on the wind tunnel body and comprises a power section front section 2 and a power section rear section 4, a fairing front cover 21 is arranged in the power section front section 2, and a fairing rear cover 41 is arranged in the power section rear section 4.
The wind tunnel body is provided with a fan 3, and the fan 3 is arranged between the power section front section 2 and the power section rear section 4.
The wind tunnel is characterized in that a diffusion section 5 is arranged on the wind tunnel body, a separation net 52 is arranged in the diffusion section 5, and an access door 51 is arranged on the diffusion section 5.
The wind tunnel is characterized in that a stabilizing section 6 is arranged on the wind tunnel body, a honeycomb device 61 and a plurality of layers of damping nets 62 are sequentially arranged in the stabilizing section 6 along the airflow direction, and an access door 63 is arranged on the stabilizing section 6.
The wind tunnel comprises a wind tunnel body and is characterized in that a contraction section 7 is arranged on the wind tunnel body, the inlet end of the contraction section 7 is connected with a stabilization section 6, the outlet section of the contraction section 7 is connected with a test section 8, and the cross sectional area from the inlet end to the outlet end of the contraction section 7 is sequentially reduced.
The wind tunnel is characterized in that the wind tunnel body is provided with a test section 8, an observation window 81 is arranged on a working area of the test section 8, the observation window 81 is made of transparent glass, and the transparent glass is organic toughened glass in a step shape.
The specific working principle is as follows: the gas collection section 1 is in a horn shape as a whole, and is used for enlarging the contact surface of air and better enabling airflow to enter the wind tunnel system. The downstream of the front section 2 of the power section is connected with a fan 3. A front fairing cover 21 is installed in the front section 2 of the power section and continuously rectifies airflow in the wind tunnel so as to improve the stability and uniformity of the airflow. The fan 3 is arranged between the power section front section 2 and the power section rear section 4. A fairing rear cover 41 is arranged in the power section rear section 4 and continuously rectifies airflow in the wind tunnel so as to improve the stability and uniformity of the airflow. The diffuser section 5 is a diffuser duct that allows the gas flow to be uniformly diffused. The diffuser section 5 is provided with an access door 51, and the downstream end of the diffuser section 5 is provided with a separation net 52. The stabilizing section 6 is internally provided with rectifying equipment such as a honeycomb device 61 and a plurality of layers of damping nets 62, and the stabilizing section 6 is provided with an access door 63, so that the airflow is gradually stabilized after passing through the honeycomb device 61 and the damping nets 62, and the residual small vortexes are attenuated, so that the airflow is kept uniform and stable. The constriction 7 is a constriction duct, which accelerates the gas flow uniformly, without separation on the wall of the hole when the gas flow flows along the constriction 7. The air flow at the outlet of the contraction section 7 is required to be uniform, straight and stable, so that the contraction section 7 is not suitable for overlong, and the length of the contraction section is suitable, so that the cost of wind tunnel construction can be reduced, and the energy loss can be reduced. The working area of the test section 8 is provided with an observation window 81 through which the test product can be clearly observed and replaced.
As shown in fig. 1, a front cowling 21 is installed in the front section 2 of the power section, and mainly plays a role in rectification, so as to ensure that the airflow maintains a certain speed and improve the flow field quality.
As shown in fig. 1, the fan 3 mainly provides pressure to form an air flow.
As shown in fig. 1, a cowling front cover 41 is installed in the power section rear section 4, and mainly plays a role in rectification, so as to ensure that the airflow maintains a certain speed, and to improve the flow field quality.
As shown in fig. 1, a honeycombed device 61 and a plurality of layers of damping nets 62 are sequentially arranged in the stabilizing section 6 along the airflow direction, and an access door 63 is arranged on the stabilizing section, wherein the honeycombed device 61 can ensure the stability and uniformity of the airflow, reduce the influence caused by turbulence, and ensure the flow field quality of the test section. The cross-sectional shape of the honeycomb lattice of the honeycomb unit 61 may be selected from one of a circular shape, a rectangular shape, and a hexagonal shape, but other shapes may be selected. In specific implementation, the cross-sectional shape of the honeycomb lattice is preferably a regular hexagon.
As shown in fig. 1, an access door 51 is arranged on the diffuser section 5, and a separation net 52 is arranged at the downstream end of the diffuser section 5, wherein the access door 51 is mainly convenient for detection and maintenance, and the separation net 52 mainly plays a role of safety protection, so that the flow field is uniform.
As shown in FIG. 1, the test section 8 provides the required air flow and space for the experiment, and the test section 8 is provided with an observation window 81 for facilitating observation and replacement of the test product. The window of the observation window 81 is made of transparent glass, and the transparent glass is organic tempered glass in a step shape.
The technical contents and features of the present invention have been disclosed above, however, those skilled in the art may still make various substitutions and modifications based on the teaching and disclosure of the present invention without departing from the spirit of the present invention, therefore, the protection scope of the present invention should not be limited to the contents disclosed in the embodiments, but should include various substitutions and modifications without departing from the present invention, and should be covered by the claims of the present patent application.
Claims (8)
1. A wind tunnel device of a wind turbine is characterized by comprising a gas collection section, a power section front section, a fan, a power section rear section, a diffusion section, a stable section, a contraction section and a test section which are sequentially communicated along the airflow direction; the front section of the power section comprises a fairing front cover; the power section rear section comprises a fairing rear cover; the diffusion section comprises an access door and a separation net; the stabilizing section comprises a honeycomb device, a damping net and an access door; the test section includes an observation window.
2. The wind tunnel device of a wind turbine according to claim 1, wherein the wind tunnel body is provided with a gas collection section, the gas collection section comprises an air inlet end and an air outlet end, the cross-sectional area of the air inlet end of the gas collection section to the air outlet end is gradually reduced, and the air outlet end is connected with the front section of the power section.
3. The wind tunnel device of a wind turbine according to claim 1, wherein said wind tunnel body is provided with a power section, said power section comprises a power section front section and a power section rear section, said cowling front cover is disposed in said power section front section, and said cowling rear cover is disposed in said power section rear section.
4. The wind tunnel device of a wind turbine according to claim 1, wherein said wind tunnel body is provided with a fan, said fan being disposed between the front section of the power section and the rear section of the power section.
5. The wind tunnel device of a wind turbine according to claim 1, wherein a diffuser is provided on the wind tunnel body, a separation net is provided in the diffuser, and an access door is provided on the diffuser.
6. The wind tunnel device of a wind turbine according to claim 1, wherein said wind tunnel body is provided with a stable section, said stable section is provided with a honeycomb device and a plurality of layers of damping nets in sequence along the direction of the air flow, said stable section is provided with an access door.
7. The wind tunnel device of a wind turbine according to claim 1, wherein the wind tunnel body is provided with a contraction section, the inlet end of the contraction section is connected with the stabilization section, the outlet section of the contraction section is connected with the test section, and the cross-sectional areas of the inlet end to the outlet end of the contraction section are sequentially reduced.
8. The wind tunnel device of a wind turbine according to claim 1, wherein the wind tunnel body is provided with a test section, the working area of the test section is provided with an observation window, the observation window is made of transparent glass, and the transparent glass is organic tempered glass in a step shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273484.8U CN210834084U (en) | 2019-12-18 | 2019-12-18 | Wind tunnel device of wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922273484.8U CN210834084U (en) | 2019-12-18 | 2019-12-18 | Wind tunnel device of wind turbine |
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| CN210834084U true CN210834084U (en) | 2020-06-23 |
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| CN201922273484.8U Active CN210834084U (en) | 2019-12-18 | 2019-12-18 | Wind tunnel device of wind turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912596A (en) * | 2020-07-27 | 2020-11-10 | 西北工业大学 | Small-sized straight-flow wind tunnel diffusion section with ultra-long fairing and annular separation-preventing net |
| CN114279672A (en) * | 2021-12-09 | 2022-04-05 | 中国科学院新疆生态与地理研究所 | Intensive wind tunnel structure capable of changing wind speed in layering manner |
| CN116256143A (en) * | 2023-05-15 | 2023-06-13 | 中国航空工业集团公司沈阳空气动力研究所 | Integrated structure of pipe wind tunnel spray pipe and test section and operation method |
-
2019
- 2019-12-18 CN CN201922273484.8U patent/CN210834084U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912596A (en) * | 2020-07-27 | 2020-11-10 | 西北工业大学 | Small-sized straight-flow wind tunnel diffusion section with ultra-long fairing and annular separation-preventing net |
| CN111912596B (en) * | 2020-07-27 | 2022-06-07 | 西北工业大学 | Small-sized straight-flow wind tunnel diffusion section with ultra-long fairing and annular separation-preventing net |
| CN114279672A (en) * | 2021-12-09 | 2022-04-05 | 中国科学院新疆生态与地理研究所 | Intensive wind tunnel structure capable of changing wind speed in layering manner |
| CN116256143A (en) * | 2023-05-15 | 2023-06-13 | 中国航空工业集团公司沈阳空气动力研究所 | Integrated structure of pipe wind tunnel spray pipe and test section and operation method |
| CN116256143B (en) * | 2023-05-15 | 2023-07-14 | 中国航空工业集团公司沈阳空气动力研究所 | Integrated structure of pipe wind tunnel spray pipe and test section and operation method |
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