CN212008646U - Wind speed and direction measuring device - Google Patents
Wind speed and direction measuring device Download PDFInfo
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- CN212008646U CN212008646U CN202020189100.4U CN202020189100U CN212008646U CN 212008646 U CN212008646 U CN 212008646U CN 202020189100 U CN202020189100 U CN 202020189100U CN 212008646 U CN212008646 U CN 212008646U
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Abstract
The utility model provides a wind speed and direction measuring device, which comprises a wind direction measuring component and a wind speed measuring component; the wind speed measuring component is fixed on the wind direction measuring component; the wind speed measuring component comprises a cylindrical pressure sensor and a data acquisition component; the front port of the pressure sensor is fixedly communicated with a front air inlet inner pipe for free air to enter, and the rear port of the pressure sensor is fixedly communicated with a rear air outlet inner pipe for free air to flow out; the pressure sensor, the front air inlet inner pipe and the rear air outlet inner pipe form an inner cylinder component; an outer cylinder component is sleeved outside the inner cylinder component; a closed annular air duct is formed between the outer barrel component and the inner barrel component; the outer cylinder component is provided with at least 2 lateral ventilation openings for free air to enter. The utility model discloses a pressure sensor measures its pressure differential (wind pressure) and obtains accurate wind speed value to obtain the wind direction value through the wind direction measurement component. The utility model discloses avoided the reliance to empirical coefficient, had that measurement accuracy is high, with low costs and the commonality is strong advantage.
Description
Technical Field
The utility model belongs to the technical field of wind speed and direction's meteorological measurement, especially, relate to a wind speed and direction measuring device.
Background
The traditional anemometer, such as a cup type anemometer, generally comprises a sensing part consisting of 3 parabolic cone hollow cups fixed on a support at 120 degrees, wherein under the action of wind, the sensing part rotates around a shaft at a rotating speed proportional to the wind speed, so that the wind speed is obtained.
However, in the above-mentioned measuring device, the wind speed and the wind speed around the axis are usually obtained from an empirical relationship, and at different vertical heights and different places, different empirical conversion coefficients are also usually available, thereby leading to large uncertainty and certain measurement errors of the wind speed measurement. In addition, although the novel ultrasonic velocity measurement and the like can reach certain precision, the price is high, and the universality is poor.
Disclosure of Invention
An object of the utility model is to provide a wind speed and direction measuring device, its universality is strong, measurement accuracy is high, low cost. In order to achieve the above purpose, the utility model adopts the following technical scheme:
a wind speed and direction measuring device comprises a wind direction measuring component and a wind speed measuring component; the wind speed measuring component is fixed above the wind direction measuring component;
the wind speed measuring component comprises a cylindrical pressure sensor and a data acquisition component;
the front port of the pressure sensor is fixedly communicated with a front air inlet inner pipe for free air to enter, and the rear port of the pressure sensor is fixedly communicated with a rear air outlet inner pipe for free air to flow out;
the pressure sensor, the front air inlet inner pipe and the rear air outlet inner pipe form an inner cylinder component; an outer cylinder component is sleeved on the outer side of the inner cylinder component;
a closed annular air duct is formed between the outer barrel component and the inner barrel component; the outer barrel component is provided with at least 2 lateral ventilation openings for free air to enter;
the free air entering the closed annular air duct from the lateral vent and the free air entering the pressure sensor from the front air inlet inner tube generate pressure difference at the cylinder wall of the pressure sensor, and the pressure difference enables the pressure sensor to deform and transmit signals to the data acquisition component.
Preferably, the outer cylinder member includes a cylindrical straight cylinder section, a first tapered cylinder section connected to the end of the front air inlet pipe, and a second tapered cylinder section connected to the end of the rear air outlet pipe.
Preferably, the two lateral vents are symmetrically disposed on both sides of the axis of the outer cylindrical member.
Preferably, the device further comprises a rotating rod; the upper end of the rotating rod is fixed on the outer barrel component, the lower end of the rotating rod is fixedly connected with the wind direction measuring component, and the wind direction measuring component can drive the rotating rod to rotate.
Preferably, the wind direction measuring component comprises a fixed supporting rod, a turntable, a compass and a wind vane;
the lower end of the fixed supporting rod is fixed;
the turntable is sleeved at the upper end of the fixed supporting rod, and the turntable and the fixed supporting rod can rotate relatively;
the upper surface of the turntable is fixedly connected with the wind vane and the compass which are horizontally arranged and the rotating rod which is vertically arranged;
the wind vane, the compass and the rotating rod rotate along with the turntable, and a wind direction angle is formed between the wind vane and the compass.
Preferably, the lateral vents are symmetrically formed in the outer cylindrical member.
Compared with the prior art, the utility model has the advantages that: the utility model discloses based on establish wind pressure-wind speed relation model design wind speed measurement component, measure its pressure differential (wind pressure) through pressure sensor and obtain accurate wind speed value to obtain the wind direction value through wind direction measurement component. The utility model discloses avoided the reliance to empirical coefficient, had that measurement accuracy is high, with low costs and the commonality is strong advantage.
Drawings
Fig. 1 is an overall structural view of a wind speed and direction measuring device according to an embodiment of the present invention;
FIG. 2 is a block diagram of the velocity measurement means of FIG. 1;
FIG. 3 is a positional relationship diagram between the pressure sensor and the outer cylindrical member in FIG. 2;
FIG. 4 is a block diagram of the orientation measurement means of FIG. 1.
The wind speed measuring device comprises a wind speed measuring component 1, a pressure sensor 11, a front wind inlet pipe 12, a rear wind outlet pipe 13, an outer cylinder component 14, a lateral air vent 141, a wind direction measuring component 2, a fixed supporting rod 21, a rotating disc 22, a compass 23, a wind vane 24 and a rotating rod 3.
Detailed Description
The present invention will now be described in more detail with reference to the drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art could modify the invention herein described while still achieving the beneficial effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
As shown in fig. 1 to 4, a wind speed and direction measuring device includes a wind direction measuring member 2 and a wind speed measuring member 1; the wind speed measuring component 1 is fixed above the wind direction measuring component 2; the wind speed measuring member 1 and the wind direction measuring member 2 are freely rotatable in a horizontal plane. When wind speed and wind direction are measured, the wind speed measuring component 1 deduces a wind pressure-wind speed relation model based on Bernoulli principle and mechanical analysis, wind speed is calculated by measuring wind pressure, namely, the pressure sensor 11 is finally used for measuring the pressure difference to obtain an accurate wind speed value, and meanwhile, the wind direction measuring component 2 obtains a wind direction value expressed by a partial south degree.
The specific structural design of the wind speed measuring member 1 is shown in fig. 1-2, and comprises a cylindrical pressure sensor 11, a front wind inlet inner pipe 12, a rear wind outlet inner pipe 13, an outer cylinder member 14 and a data acquisition member, wherein the pressure sensor 11 is in signal connection with the data acquisition member. The specific structure and position relationship of the structure are as follows: the front end opening of the pressure sensor 11 is fixedly communicated with a front air inlet inner pipe 12 for free air to enter, and the rear end opening is fixedly communicated with a rear air outlet inner pipe 13 for free air to flow out; the pressure sensor 11, the front air inlet inner pipe 12 and the rear air outlet inner pipe 13 form an inner cylinder component; an outer cylinder member 14 is sleeved outside the inner cylinder member; a closed annular air duct is enclosed between the outer barrel component 14 and the inner barrel component; the outer cylinder member 14 is provided with 2 lateral ventilation openings 141 for allowing free air to enter so as to maintain the outside of the pressure sensor 11 in communication with the outside atmosphere. Further, the lateral vents 141 are symmetrically disposed to keep the pressure outside the pressure sensor 11 the same, so as to reduce the influence of the external atmospheric pressure on the pressure sensor 11.
When the wind speed measuring member 1 is in operation: the pressure difference is generated at the cylinder wall of the pressure sensor 11 by the free air entering the closed annular air duct from the 2 lateral air vents 141 and the free air entering the pressure sensor 11 from the air inlet inner pipe 12; the pressure sensor 11 deforms and transmits a signal to the data acquisition member. That is, when the wind starts, the pressure difference is generated at the pressure sensor 11 by the free wind entering from the 2 lateral vents 141 and the inner tube 12 of the forward wind; the pressure sensor 11 deforms under the pressure difference.
Based on the wind speed measuring means 1, the process of deriving the wind speed value at the measuring point (at a certain height) at the current height is as follows:
pressure ofAt the sensor 11
For the cross-sectional pressure analysis, as shown in fig. 2, the inner side of the pressure sensor 11 receives the pressure of the dynamic wind, and the outer side of the pressure sensor 11 is the static atmospheric pressure.
The pressure is balanced to obtain the pressure-balanced air conditioner,
namely, it is
In formulas (2) and (3):
dthe radius of the inner pipe 12 of the forward air;
kis the stiffness coefficient of the pressure sensor 11;
for the inner pipe 12 opening of the front wind
Cross section and pressure sensor 11
The cross section, obtained by the Bernoulli equation,
wherein,
wherein, in formulas (4) and (5):
Lis composed of
Cross section and
the distance of the cross section;
The following formulas (1) to (5) can be obtained,
in the formula (6), the reaction mixture is,
which is the elastic deformation of the pressure sensor 11, is read by the data acquisition means.
As can be seen from the formula (6): the wind speed of the air and the elastic deformation of the pressure sensor 11
There is a positive correlation, i.e. the higher the wind speed, the higher the pressure sensor 11 is subjected to. Therefore, the elastic deformation of the pressure sensor 11 is measured by the pressure sensor 11, and the wind speed value V of the measurement point at the current height can be calculated0。
In the present embodiment, in order to reduce the influence of the free air (outside air flow) entering from the front air inlet pipe 12 on the free air entering the closed annular air duct, the outer cylindrical member 14 is configured to include a cylindrical straight cylindrical section, a first tapered cylindrical section connected to the end of the front air inlet pipe 12, and a second tapered cylindrical section connected to the end of the rear air outlet pipe 13. That is, the section of the outer cylinder component 14 connected with the front air inlet inner pipe 12 is an inclined plane; after the outer cylinder component 14 is connected, one section of the air outlet inner pipe 13 is an inclined plane, and if the inclined plane is a streamline; in order to make the atmospheric condition in the closed annular air duct be static atmospheric pressure (i.e. the atmospheric condition outside the pressure sensor is static atmospheric pressure), the lateral vents 141 are symmetrically arranged at two sides of the axis of the outer cylinder member 14; the connecting line of the lateral air vents 141 is perpendicular to the front wind inner pipe 12.
In other embodiments besides this embodiment, the structural design of the front air duct, the rear air outlet duct, the cylindrical pressure sensor 11, and the outer cylindrical member 14 may be: the front air outlet pipe and the rear air outlet pipe are integrally formed to form an inner cylinder component, and a closed annular air channel is enclosed between the inner cylinder component and the outer cylinder component 14. The cylindrical pressure sensor 11 is fixed to the inner wall of the integrally formed inner tube.
The specific structure design of the wind direction measuring member 2 is shown in fig. 1 and 4, in this embodiment, in order to allow the wind speed measuring member 1 and the wind direction measuring member 2 to freely rotate in the horizontal direction, the wind direction measuring member 2 is further designed, and a rotating rod 3 is additionally arranged, as shown in fig. 1 and 4.
Specifically, the wind direction measuring means 2 includes a fixed support bar 21, a turntable 22, a compass 23 and a wind vane 24. Wherein, the lower end of the fixed support rod 21 is fixed at the measuring point under the current height; the upper end of the fixed support rod 21 is sleeved with a turntable 22, namely, the turntable 22 and the fixed support rod 21 can rotate relatively; the upper surface of the turntable 22 is provided with a groove for fixing a wind vane 24 which is horizontally arranged; a compass 23 is fixed on the upper surface of the turntable 22; the wind vane 24 and the compass 23 rotate along with the turntable 22, and a wind direction angle is formed between the wind vane 24 and the compass 23. The upper end of the rotating rod 3 is fixed on the outer cylinder component 14, and the lower end passes through the compass 23 and is fixed on the wind direction measuring component 2 (the turntable 22); namely, the upper surface of the turntable 22 is fixedly connected with a horizontally arranged wind vane 24, a compass 23 and a vertically arranged rotating rod 3. When the wind starts, the wind vane 24 rotates along with the wind to realize automatic windward alignment, the wind vane 24 drives the rotary table 22 to rotate around the fixed support rod 21, the rotary table 22 drives the rotary rod 3 to rotate (namely, the wind speed measuring component 1 and the wind direction measuring component 2 can freely rotate in a horizontal plane), at the moment, the wind speed measuring component 1 aligns along the wind, so that the wind entering an inner cylinder component (relative to the outer cylinder component, the wind entering the inner cylinder component is equivalent to an inner cylinder component) consisting of the pressure sensor 11, the front wind inner tube 12 and the rear wind outlet inner tube 13 is complete free wind, the free airflow state outside the inner cylinder component (in a closed annular air channel) is kept relatively static, and meanwhile, the wind direction measuring component 2 obtains a wind direction value.
In the present embodiment, the wind vane 24 includes a wind direction arrow and arrow feathers.
The utility model discloses a theory of operation does:
when the wind starts, the wind vane 24 is automatically aligned to face the wind, the wind speed measuring component 1 rotates along with the wind speed, at the moment, under the regulation of a wind direction arrow and arrow feather, the wind speed measuring component 1 reaches a stable state, and the included angle (a south-biased angle) between the wind vane 24 and the compass 23 is a wind direction angle; at the moment, free air enters the pressure sensor 11 through an air inlet pipe orifice of the front air inlet inner pipe 12, and enters the closed annular air duct through the 2 lateral air vents 141; as shown in fig. 2, the wind entering from the nozzle of the inner tube 12 of the front wind in parallel to the wind direction has dynamic wind pressure; the free wind entering from the lateral vent 141 and laterally perpendicular to the wind direction has a static atmospheric pressure after stabilization, and the cylindrical pressure plate of the pressure sensor 11 deforms due to the fact that the dynamic atmospheric pressure with the wind speed is smaller than the static atmospheric pressure in a windless state to generate a pressure difference. The utility model is not the best known technology.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (6)
1. A wind speed and direction measuring device is characterized by comprising a wind direction measuring component and a wind speed measuring component; the wind speed measuring component is fixed above the wind direction measuring component;
the wind speed measuring component comprises a cylindrical pressure sensor and a data acquisition component;
the front port of the pressure sensor is fixedly communicated with a front air inlet inner pipe for free air to enter, and the rear port of the pressure sensor is fixedly communicated with a rear air outlet inner pipe for free air to flow out;
the pressure sensor, the front air inlet inner pipe and the rear air outlet inner pipe form an inner cylinder component; an outer cylinder component is sleeved on the outer side of the inner cylinder component;
a closed annular air duct is formed between the outer barrel component and the inner barrel component; the outer barrel component is provided with at least 2 lateral ventilation openings for free air to enter;
the free air entering the closed annular air duct from the lateral vent and the free air entering the pressure sensor from the front air inlet inner tube generate pressure difference at the cylinder wall of the pressure sensor, and the pressure difference enables the pressure sensor to deform and transmit signals to the data acquisition component.
2. The wind speed and direction measuring device of claim 1, wherein the outer barrel member comprises a cylindrical straight barrel section, a first tapered barrel section connected to the end of the front wind inlet pipe, and a second tapered barrel section connected to the end of the rear wind outlet pipe.
3. The anemometry apparatus of claim 1 wherein two of said lateral vents are symmetrically disposed on opposite sides of an axis of said outer barrel member.
4. The anemometry apparatus of claim 1 further comprising a rotating shaft; the upper end of the rotating rod is fixed on the outer barrel component, the lower end of the rotating rod is fixedly connected with the wind direction measuring component, and the wind direction measuring component can drive the rotating rod to rotate.
5. The wind speed and direction measuring device according to claim 4, wherein said wind direction measuring means comprises a fixed support rod, a turntable, a compass and a wind vane;
the lower end of the fixed supporting rod is fixed;
the turntable is sleeved at the upper end of the fixed supporting rod, and the turntable and the fixed supporting rod can rotate relatively;
the upper surface of the turntable is fixedly connected with the wind vane and the compass which are horizontally arranged and the rotating rod which is vertically arranged;
the wind vane, the compass and the rotating rod rotate along with the turntable, and a wind direction angle is formed between the wind vane and the compass.
6. A wind speed and direction measuring device according to any one of claims 1 to 5, wherein said lateral ventilation openings are symmetrically formed in said outer cylindrical member.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020189100.4U CN212008646U (en) | 2020-02-20 | 2020-02-20 | Wind speed and direction measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020189100.4U CN212008646U (en) | 2020-02-20 | 2020-02-20 | Wind speed and direction measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113011032A (en) * | 2021-03-25 | 2021-06-22 | 安徽建筑大学城市建设学院 | Building ventilation energy-saving reconstruction method and detection device |
| CN113075419A (en) * | 2021-03-31 | 2021-07-06 | 苏州容启传感器科技有限公司 | Wind speed and direction detection device |
-
2020
- 2020-02-20 CN CN202020189100.4U patent/CN212008646U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113011032A (en) * | 2021-03-25 | 2021-06-22 | 安徽建筑大学城市建设学院 | Building ventilation energy-saving reconstruction method and detection device |
| CN113011032B (en) * | 2021-03-25 | 2023-08-08 | 安徽建筑大学城市建设学院 | Ventilating energy-saving reconstruction method and detection device for building |
| CN113075419A (en) * | 2021-03-31 | 2021-07-06 | 苏州容启传感器科技有限公司 | Wind speed and direction detection device |
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