CN211718331U - Calibrating device of breeze anemoscope - Google Patents
Calibrating device of breeze anemoscope Download PDFInfo
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- CN211718331U CN211718331U CN201922205927.XU CN201922205927U CN211718331U CN 211718331 U CN211718331 U CN 211718331U CN 201922205927 U CN201922205927 U CN 201922205927U CN 211718331 U CN211718331 U CN 211718331U
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Abstract
The utility model discloses a calibrating installation of breeze anemoscope belongs to measurement and detection technical field. The device comprises a first test section, a second contraction section, a second test section, a first diffusion section, a first corner, a first backflow section, a second corner, a power section, a second diffusion section, a third corner, a second backflow section, a fourth corner, a stabilization section and a first contraction section which are sequentially communicated along the airflow direction. The utility model relates to a calibrating installation of breeze anemoscope especially has characteristics such as precision height, stability are good, low in noise in breeze wind speed section, and the anemoscope accurate measurement wind speed of being convenient for, wide application in trades such as electric power, steel and iron, petrochemical industry, energy-conservation.
Description
Technical Field
The utility model relates to a measurement and detection technical field relates to a calibrating installation of breeze anemoscope, the accurate wind speed of measuring of anemoscope of being convenient for of the invention, extensive be applied to trades such as electric power, steel and iron, petrochemical industry, energy-conservation.
Background
An anemometer, generally referred to as an anemometer, is an instrument that measures the velocity of air. The weather station is most commonly used as a wind cup anemometer, and an induction part consists of 3 parabolic cone hollow cups which are mutually fixed on a support at an angle of 120 degrees, and the concave surfaces of the hollow cups are all in the same direction. The whole induction part is arranged on a vertical rotating shaft, and under the action of wind force, the wind cup rotates around the shaft at a rotating speed proportional to the wind speed.
At present, the anemograph calibrating device on the market has the problems of motor heat dissipation, high energy consumption and high waste of a transmission mechanism, high noise, complex operation and the like. The incoming current index is unstable, the motor is exposed outside, noise is directly transmitted into a laboratory, the noise is large, and the working environment and physical and psychological health of testing personnel are influenced. Therefore, a calibrating device for the breeze anemometer is provided.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's defect, provide a calibrating installation of breeze anemoscope, this calibrating installation rotational speed control precision is high, stability is good, efficient. And the device is matched with a full-digital variable-frequency speed regulator, so that the flow field index can be effectively improved. The anemoscope is convenient to prepare for measuring the wind speed, and can be widely applied to the industries of electric power, steel, petrifaction, energy conservation and the like. The utility model discloses power section motor adopts built-in, plus the radome fairing rectification, and the motor shaft directly links the transmission with the fan, and the cooling of motor carries out the air cooling through taking axial compressor cooling fan certainly.
In order to achieve the above object, the utility model provides a following technical scheme: the calibrating device of the breeze anemoscope comprises a first test section, a second contraction section, a second test section, a first diffusion section, a first corner, a first backflow section, a second corner, a power section, a second diffusion section, a third corner, a second backflow section, a fourth corner, a stabilizing section and a first contraction section which are sequentially distributed along the anticlockwise direction of a closed loop formed by end-to-end connection in the airflow direction, wherein the power section comprises a power section rear part, a fairing rear cover, a fan section, a power section front part and a fairing front cover, and a honeycomb device and a plurality of layers of damping nets are arranged in the stabilizing section.
The utility model provides a calibrating installation of breeze anemoscope includes that end to end forms closed circuit first test section, second shrink section, second test section, first diffuser, power section, second diffuser, stable section, first shrink section, first backward flow section sets up between first diffuser and the power section, and both ends communicate with each other with first diffuser and power section respectively, second backward flow section sets up between second diffuser and the stable section, and both ends communicate with each other with second diffuser and stable section respectively, just between first diffuser and the first backward flow section, between first backward flow section and the power section, between second diffuser and the second backward flow section, all set up a turning between second backward flow section and the stable section.
Preferably, a different number of guide vanes are respectively arranged in the first corner, the second corner, the third corner and the fourth corner. On the one hand, for forming a closed circuit, and on the other hand, mainly for preventing flow separation, improving flow and reducing losses.
Preferably, the contraction section comprises an air inlet end and an air outlet end, and the contraction section adopts a corrected double-quintic curve to ensure that the flow field has excellent technical quality.
Preferably, the test section is changed along with the length of the test section, the boundary layer can be thickened, so the wall surface is provided with a diffusion angle for shielding influence, the test section is provided with a front transparent door window and a rear transparent door window, and the transparent door window is made of organic toughened glass in a step shape.
Preferably, the stabilizing section is sequentially provided with a honeycomb device and a plurality of layers of damping nets along the airflow direction, and the damping nets are formed by weaving stainless steel wires; the honeycomb device is composed of regular hexagonal fine grids, and a repair hole is formed in a frequently maintained place of the stabilizing section, so that detection and maintenance are facilitated.
Preferably, the first diffusion section is located between the second test section and the first corner, the kinetic energy of the airflow is recovered to pressure energy, the energy loss of the airflow at each section of the downstream of the first diffusion section is reduced, and a repair hole is arranged at a frequently maintained position of the first diffusion section, so that detection and maintenance are facilitated.
Preferably, the power section comprises a power front part and a power rear part, the fairing front cover is arranged in the power section front part, and the fairing rear cover is arranged in the power section rear part.
Preferably, the second diffuser section is located between the power section and the third corner, recovers kinetic energy of the airflow into pressure energy, reduces energy loss of the airflow at each section downstream of the second diffuser section, and is provided with a manhole at a place where the second diffuser section is frequently maintained, so that detection and maintenance are facilitated.
Preferably, the fan section adopts a high-performance low-noise axial flow fan, and mainly comprises a shell, blades, a propeller hub, a shaft system, a motor and a support thereof, a rotation stopping sheet, a flow guiding support sheet, a fairing and the like, and a transition section is arranged at the downstream of the fan.
Preferably, the supporting mechanism comprises a front supporting sheet and a rear supporting sheet, the front section of the fairing is fixed in the power section through the front supporting sheet, and the rear section of the fairing is fixed in the power section through the rear supporting sheet.
Preferably, the power section is internally provided with a power section rear part, a fairing rear cover, a fan section, a power section front part and a fairing front cover in sequence along the airflow direction.
The utility model has the advantages that:
(1) the wind tunnel power section motor of the device is built in, a fairing is added for rectification, a motor shaft is directly connected with a fan for transmission, the rotating speed precision is high, stability and efficiency are high, noise is low, and the flow field index can be effectively improved.
(2) The ratio of the cross sectional areas of the two ends of the inlet contraction section is 4-10: 1, and the inlet contraction section is obtained through experiments, so that the wind speed uniformity of the device can be improved, the turbulence degree can be reduced, and the air flow deflection angle can be reduced. And correcting a boundary layer by using a contraction section curve, and optimizing by using a special pneumatic optimization tool to improve the quality of the air flow of the test section.
(3) The device adopts a backflow type closed-end type, and has the advantages of no interference from an external environment, high efficiency, less energy loss, good flow field performance and the like.
Drawings
Fig. 1 is a schematic front view of the present invention;
reference numerals: 1. the test structure comprises a first test section, 2, a second contraction section, 3, a second test section, 4, a first diffusion section, 5, a first corner, 6, a first backflow section, 7, a second corner, 8, a power section, 81, a power section rear part, 82, a fairing rear cover, 83, a fan section, 84, a power section front part, 85, a fairing front cover, 9, a second diffusion section, 10, a third corner, 11, a second backflow section, 12, a fourth corner, 13, a stabilizing section, 131, a honeycomb device, 132, a damping net, 14 and a first contraction section.
Detailed Description
The technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
As shown in fig. 1, the utility model discloses a calibrating apparatus of breeze anemoscope, the hole body structure includes that the air current direction distributes first test section 1, second shrink section 2, second test section 3, first diffuser 4, first turning 5, first backward flow section 6, second turning 7, power section 8, second diffuser 9, third turning 10, second backward flow section 11, fourth turning 12, stable section 13, first shrink section 14 along the counter-clockwise of the closed circuit that forms in proper order.
The calibrating device of the breeze anemoscope comprises a first test section, a second contraction section, a second test section, a first diffusion section, a first corner, a first backflow section, a second corner, a power section, a second diffusion section, a third corner, a second backflow section, a fourth corner, a stabilizing section and a first contraction section which are sequentially distributed along the anticlockwise direction of a closed loop formed in the airflow direction, wherein the power section comprises a power section rear part, a fairing rear cover, a fan section, a power section front part and a fairing front cover, and a honeycomb device and a plurality of layers of damping nets are arranged in the stabilizing section.
The specific working principle is as follows: the test model is placed in the first test section 1 which is distributed along the anticlockwise direction of the closed loop formed in the airflow direction and is used for testing the wind speed. In this embodiment, the wall surface of the test section is provided with a diffusion angle to shield the influence. And a front transparent door and a rear transparent door and window are arranged on the test section, and the transparent door and window is made of transparent glass, so that a test article can be observed and replaced conveniently.
The second constriction section 2 is a constriction duct, which allows the air flow to be accelerated uniformly, so that it meets the flow rate requirement of the second test section 3. The air flow at the outlet of the contraction section is required to be uniform, straight and stable, so that the contraction section is not suitable for overlong, the length of the contraction section is suitable, the cost of wind tunnel construction can be reduced, and the energy loss is reduced. The inlet (namely the port close to the first test section 1) of the second contraction section 2 is preferably 1.0m phi 1.0m, the outlet (namely the port close to the second test section 3) is preferably 0.4m phi 0.4m, and the sizes of the inlet and the outlet of the second contraction section 2 can be designed according to actual requirements. And the shrinkage section 2 adopts the corrected double-quintic curve, so that the technical quality of the flow field is ensured to be excellent.
And a test model is placed in the second test section 3 and used for testing the wind speed. In this embodiment, the wall surface of the test section is provided with a diffusion angle to shield the influence. Transparent door and window around being equipped with on the experimental section, transparent door and window chooses for use to be the organic toughened glass of step shape, is convenient for observe and change the test article.
The main function of the first diffuser section 4 is to recover the kinetic energy of the gas flow into pressure energy, reducing the energy loss of the gas flow in the sections downstream of the diffuser section.
The first corner 5 is located between the first diffuser section 4 and the first return section 6, which is needed on the one hand to form a closed circuit and on the other hand mainly to prevent flow separation, improve the flow of the gas flow and reduce losses.
The first return flow section 6 mainly forms a return flow state of the whole wind tunnel.
The second corner 7 is located between the first return section 6 and the power section 8, on the one hand, required for forming a closed circuit and, on the other hand, mainly for preventing flow separation, improving flow and reducing losses.
The power section 8 adopts a high-performance low-noise axial flow fan, has the characteristics of high efficiency, uniform wind speed and the like, and mainly comprises a power section rear part 81, a fairing rear cover 82, a power section front part 84 and a fairing front cover 85, wherein the fan section 83 is a power source of the wind tunnel and continuously supplements energy for airflow in the wind tunnel so as to ensure that the airflow constantly flows in the wind tunnel at a certain speed.
The second diffuser section 9 is located downstream of the power section 8, and mainly functions to recover the kinetic energy of the airflow into pressure energy and reduce the energy loss of the airflow at each section downstream of the diffuser section.
The third corner 10 is located between the second diverging section 9 and the second return section 11, which is needed on the one hand for forming a closed circuit and on the other hand mainly to prevent flow separation, improve flow and reduce losses.
The second return flow section 11 is located between the third corner 10 and the fourth corner 12, and mainly forms a return flow state of the whole wind tunnel.
The fourth corner 12 is located between the second return section 11 and the stabilizing section 13, which is needed on the one hand for forming a closed circuit and on the other hand mainly for preventing flow separation, improving flow of the gas flow and reducing losses.
Rectifying equipment such as a honeycomb device 131 and a plurality of layers of damping nets 132 are installed in the steady flow section 13, airflow is distributed towards the direction of the fourth corner 12 along the first contraction section 14 after passing through the honeycomb device 131 and the damping nets 132, the turbulence degree of the steady flow section 13 is greatly reduced, the airflow at the inlet of the first contraction section 14 and the airflow of the first test section 1 are uniform, and the airflow quality of the first contraction section is improved.
The first constriction 14 is a constriction duct which allows the gas flow to be accelerated uniformly so that it meets the flow rate requirements of the first test section 1. The air flow at the outlet of the contraction section is required to be uniform, straight and stable, so that the contraction section is not suitable for overlong, the length of the contraction section is suitable, the cost of wind tunnel construction can be reduced, and the energy loss is reduced. The first contraction section 14 is a curved surface with a cross section gradually contracting towards the first test section 1, the inlet (i.e. the port close to the stabilizing section 13) of the first contraction section 14 is preferably 1.5m phi 1.5m, the outlet (i.e. the port close to the first test section 1) of the first contraction section 14 is preferably 0.3m phi 0.3m, and the size of the inlet and the outlet of the first contraction section 14 can be designed according to actual needs. And the curve is corrected on the boundary layer, and a special pneumatic optimization tool is adopted for optimization, so that the flow field is ensured to have excellent quality.
As shown in FIG. 1, power section 8 includes a power section rear portion 81, a cowling rear cover 82, and a low noise fan section 83, and further includes a power section front portion 84 and a cowling front cover 85.
As shown in fig. 1, a honeycombed device 131 and a plurality of layers of damping nets 132 are sequentially arranged in the stabilizing section 13 along the airflow direction, wherein the honeycombed device 131 is used for guiding and dividing airflow large vortexes, which is beneficial to accelerating the attenuation of the vortexes. The cross-sectional shape of the honeycomb lattice on the honeycomb 131 may be selected from a regular hexagon.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure 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 will be understood that the invention 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 limited only by the appended claims.
Claims (10)
1. A calibrating device for a breeze anemometer is characterized by comprising a first test section, a second contraction section, a second test section, a first diffusion section, a first corner, a first backflow section, a second corner, a power section, a second diffusion section, a third corner, a second backflow section, a fourth corner, a stabilizing section and a first contraction section which are sequentially distributed along the air flow direction in an anticlockwise mode and are connected end to form a closed loop, the contraction section comprises an inlet section and an outlet section, the test section is composed of a front transparent door and a rear transparent door, the diffusion section comprises an air inlet end and an air outlet end, the corner mainly forms backflow to the whole structure of the wind tunnel, a fan device is arranged in the power section, the fan device comprises a supporting mechanism, and a power section rear part, a fairing rear cover, a fan section, a power section front part and a fairing front cover which are sequentially arranged along the airflow direction, wherein a honeycomb device and a plurality of layers of damping nets are arranged in the stabilizing section.
2. The apparatus of claim 1, wherein the constriction comprises an inlet end and an outlet end, and the constriction adopts a modified quintic curve.
3. The calibrating apparatus for a gentle breeze anemometer according to claim 1, wherein transparent windows are arranged on the front and back of the test section, and the transparent windows are organic tempered glass in a step shape.
4. The calibrating apparatus for a breeze anemometer according to claim 1, wherein the stabilizing section is sequentially provided with a honeycomb device and a plurality of layers of damping nets along the airflow direction, and the damping nets are woven by stainless steel wires; the honeycomb device is composed of fine meshes of regular hexagons, and manholes are formed in places where the stabilizing sections are frequently maintained.
5. The verification device for the anemometer of claim 1, wherein the first diffuser is located between the second test section and the first corner, and recovers the kinetic energy of the airflow into pressure energy, so as to reduce the energy loss of the airflow at the sections downstream of the first diffuser, and a manhole is provided at the place where the first diffuser is frequently maintained.
6. The verification apparatus for a wind anemometer according to claim 1, wherein a different number of flow deflectors are respectively disposed in the first corner, the second corner, the third corner and the fourth corner.
7. The apparatus for calibrating a breeze anemometer according to claim 1, wherein the power section comprises a power front portion and a power rear portion, the cowling front cover is disposed in the power section front portion, and the cowling rear cover is disposed in the power section rear portion.
8. The verification device for the anemometer of claim 1, wherein the second diffuser is located between the power section and the third corner, and recovers the kinetic energy of the airflow into pressure energy, so as to reduce the energy loss of the airflow at the sections downstream of the second diffuser, and a manhole is provided at the place where the second diffuser is frequently maintained.
9. The calibrating apparatus for a gentle breeze anemometer according to claim 1, wherein the fan section is a high-performance low-noise axial fan, and mainly comprises a housing, blades, a hub and a shaft system, a motor and a bracket thereof, a rotation stopping sheet, a flow guiding support sheet, a fairing and the like, and a transition section is arranged at the downstream of the fan.
10. The wind anemometer calibration apparatus according to claim 1, wherein the support mechanism comprises a front support plate and a rear support plate, the front fairing section is fixed in the power section through the front support plate, and the rear fairing section is fixed in the power section through the rear support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922205927.XU CN211718331U (en) | 2019-12-11 | 2019-12-11 | Calibrating device of breeze anemoscope |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922205927.XU CN211718331U (en) | 2019-12-11 | 2019-12-11 | Calibrating device of breeze anemoscope |
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| CN211718331U true CN211718331U (en) | 2020-10-20 |
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| CN201922205927.XU Active CN211718331U (en) | 2019-12-11 | 2019-12-11 | Calibrating device of breeze anemoscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113050352A (en) * | 2021-03-09 | 2021-06-29 | 深圳市火乐科技发展有限公司 | Radiator for DMD chip and projection equipment |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113050352A (en) * | 2021-03-09 | 2021-06-29 | 深圳市火乐科技发展有限公司 | Radiator for DMD chip and projection equipment |
| CN113050352B (en) * | 2021-03-09 | 2022-04-22 | 深圳市火乐科技发展有限公司 | Radiator for DMD chip and projection equipment |
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