CN209803176U - Wind direction detection device - Google Patents
Wind direction detection device Download PDFInfo
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- CN209803176U CN209803176U CN201920912131.5U CN201920912131U CN209803176U CN 209803176 U CN209803176 U CN 209803176U CN 201920912131 U CN201920912131 U CN 201920912131U CN 209803176 U CN209803176 U CN 209803176U
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- elastic connecting
- wind direction
- resistance wire
- strain resistance
- ammeter
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Abstract
The utility model discloses a wind direction detection device, include: the device comprises a fixed base, a plurality of elastic connecting sheets and a direct-current power supply; a circle of elastic connecting sheet is uniformly arranged on the edge of the top of the fixed foundation; the inner side surface of each elastic connecting sheet is provided with a first strain resistance wire; each first strain resistance wire is connected with a first ammeter in series; the corresponding first strain resistance wire, the first ammeter and the direct-current power supply are connected in series to form a first closed circuit, and the first ammeter can record changes of current in the corresponding first closed circuit. The utility model discloses evenly arrange the strain resistance wire in the round elastic connection piece, when receiving wind and openly blowing, its deformation is the biggest, can judge out the wind direction. And a vertical rod and an internal strain resistance wire are arranged at the center of the circular base and used for eliminating the influence of the change of the environmental temperature on the resistivity. The utility model has the advantages of rapid response, simple structure, firm quality, low price and the like, and is simple and free from temperature influence.
Description
Technical Field
the utility model belongs to the technical field of the wind direction detects, concretely relates to wind direction detection device.
background
With global fossil energy exhaustion, shortage of supply and severe climate change situation, countries in the world recognize the importance of developing renewable energy, and pay high attention to wind power development, and the world wind power industry is rapidly developed. Since 1996, the annual average installed wind power rate of the world has remained above 25%, and wind energy has become the fastest growing clean energy in the world.
Yawing is an indispensable link in the operation of the wind turbine generator, and a yawing system is adjusted according to the wind direction, so that the wind wheel can keep the windward state to the maximum extent, the wind energy can be captured to the maximum extent, and the wind turbine generator can be effectively protected. The yaw of the wind generating set is mainly controlled according to the wind direction determined by a mechanical wind vane arranged at the top end of the engine room. Due to the randomness of wind, the wind direction changes frequently, if yaw has errors, the swept surface of a wind wheel is not perpendicular to the wind direction, power output is affected, the bearing load of a unit is increased, and the method is mainly embodied in that the load of a tower, a main shaft, a yaw system and blades is increased, the service life of a fan is shortened and the like. Therefore, it is important to ensure the detection accuracy of the wind direction.
The wind vane is an asymmetrically shaped object with a center of gravity point fixed to a vertical axis. When wind blows, the end which generates larger resistance to the air flow can rotate along the wind, and the wind direction is displayed. The arrow of the wind vane always points to the source of the wind. Although the principle of wind direction measurement of the wind vane is simple, due to the existence of inertia, after the wind direction changes, the wind vane rotates along with the wind vane, and a certain time delay exists; meanwhile, relative moving parts are abraded, and measurement errors exist after long-time running; and the rain and snow weather can also influence the wind direction measurement of the wind vane.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wind direction detection device to solve above-mentioned technical problem. The utility model discloses based on strain resistance's strain effect, the device has simple structure, and the quality is firm, advantages such as low price, and the testing result is accurate, and does not receive the temperature influence.
In order to achieve the above purpose, the utility model discloses the technical scheme who takes does:
A wind direction detection device comprising: the device comprises a fixed base, a plurality of elastic connecting sheets and a direct-current power supply;
A circle of elastic connecting sheet is uniformly arranged on the edge of the top of the fixed foundation;
The inner side surface of each elastic connecting sheet is provided with a first strain resistance wire;
Each first strain resistance wire is connected with a first ammeter in series;
The corresponding first strain resistance wire, the first ammeter and the direct-current power supply are connected in series to form a first closed circuit, and the first ammeter can record changes of current in the corresponding first closed circuit.
furthermore, a vertical rod is installed on the fixed base, a second strain resistance wire is arranged in the center of the vertical rod, the second strain resistance wire, a second ammeter and a direct-current power supply are connected in series to form a second closed circuit, and the second ammeter can record the change of current in the second closed circuit.
Furthermore, the elastic connecting sheet is vertically arranged in a natural state; the elastic connecting sheet is a wind speed stress device, the elastic connecting sheet is inclined by wind power, the more the wind direction is, the larger the stress of the elastic connecting sheet is, the larger the inclination amplitude is, and the elastic connecting sheet is recovered to be upright when no wind exists.
Furthermore, the first strain resistance wire is arranged in the center of the inner side surface of the first elastic connecting sheet, clings to the elastic connecting sheet and deforms along with the bending of the elastic connecting sheet; when the first strain resistance wire is deformed, the length of the first strain resistance wire is increased, the cross section area is reduced, and the resistance value is increased.
Furthermore, the central vertical rod is kept in an upright state and is not influenced by wind force, and the second strain resistance wire is used for compensating the influence of the ambient temperature on the wind direction detection device.
Further, the fixed foundation is a circular fixed foundation.
furthermore, the vertical rod is arranged in the middle of the circle of elastic connecting sheets.
furthermore, the elastic connecting sheet is flat; the ammeter data reading device is used for reading current readings of all the first ammeters, and the vertical direction of the elastic connecting sheet corresponding to the first ammeter with the minimum current is the wind direction.
Furthermore, the number of the elastic connecting sheets is even, and all the elastic connecting sheets are fixed on the top of the foundation for one circle; two opposite elastic connecting sheets are arranged in central symmetry with the center of the fixed foundation.
compared with the prior art, the utility model discloses following beneficial effect has:
1) The utility model relates to a wind direction detection device through the strain effect who utilizes strain resistance, finds out the elastic connection piece that the ammeter that the electric current is minimum corresponds, and the direction that this elastic connection piece corresponds promptly is the direction of wind, has advantages such as the accuracy height, response rapidly, simple structure, quality are firm, low price.
2) The utility model discloses well a plurality of elastic connection piece are the round and arrange, measurement wind direction that can be more accurate.
3) The number of the elastic connecting sheets is even, and all the elastic connecting sheets are fixed on the top circle of the foundation; the two opposite elastic connecting sheets are arranged in central symmetry with the center of the fixed foundation; two relative elastic connecting pieces are arranged in a central symmetry manner, so that one of two strain gauges on the same wind direction blocks the other strain gauge, the current magnitude of the strain gauges is different, the vertical direction of the wind-receiving surface of the elastic connecting piece which receives wind firstly can be judged as the wind direction, the detection precision is further improved, and the specific wind direction can be judged.
4) The utility model discloses a calculate the difference of electric current between two ampere meters, through finding the elastic connection piece that the ammeter that the electric current difference is the biggest corresponds, obtain the direction of wind speed, compare in prior art, the accuracy is high, and the method is brief, does not receive ambient temperature to influence.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
Fig. 1 is a schematic view of a part of a wind direction detecting device of the present invention.
fig. 2 is the utility model relates to a wind direction detection device's whole schematic diagram.
Wherein: 1. a circular fixed base; 2. an elastic connecting sheet; 3. a first strain resistance wire; 4. a vertical rod; 5. a second strain resistance wire; 6. a first ammeter; 6' and a second ammeter; 7. a direct current power supply.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The following detailed description is exemplary in nature and is intended to provide further details of the invention. Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention.
As shown in fig. 1 and fig. 2, the utility model provides a wind direction detection device, including circular fixed basis 1, a plurality of same elastic connection piece 2 evenly distributed is equipped with the same first resistance wire of straining 3 on every elastic connection piece 2 on the top border of circular fixed basis 1, and every first resistance wire of straining 3 corresponds a first ampere meter 6, and first resistance wire of straining 3, first ampere meter 6 and direct current power supply 7 series connection become a closed circuit. A vertical rod 4 is installed at the center of the top of the circular fixed foundation 1, a second strain resistance wire 5 is fixed in the vertical rod 4, and the second strain resistance wire 5, a second ammeter 6' and a direct-current power supply 7 are connected in series to form a closed loop.
influenced by the incoming flow wind direction, when the first strain resistance wire 3 deforms, the resistance value changes, and the first ammeter 6 can record the change of the current in the closed circuit.
Meanwhile, the vertical rod 4 cannot deform when being subjected to wind power, so that the second strain resistance wire 5 in the vertical rod cannot deform. However, when the ambient temperature changes, the resistivity of the second resistance strain wire 5 changes. The arrangement of the strain resistance wire in the central vertical rod 4 is to eliminate the error caused by the environmental temperature change to the measuring equipment.
When wind blows over the detection device, each elastic connecting piece 2 is blown by the wind to be inclined, so that the first strain resistance wires 3 connected with the elastic connecting pieces 2 are deformed, and the resistance value of the first strain resistance wires 3 is increased; because the elastic connecting sheet 2 at each position is influenced by wind differently, the resistance value of the first strain resistance wire 3 is changed differently, the inclination amplitude of the elastic connecting sheet 2 is the largest when the elastic connecting sheet is vertical to the wind direction, the resistance value of the connected first strain resistance wire 3 is changed the largest, and the current of the connected first strain resistance wire 3 is also the smallest. The direction corresponding to the elastic connecting sheet 2 where the first strain resistance wire 3 with the minimum current is located is the wind direction.
The utility model relates to a wind direction detection device, the during operation can also be equipped with reading and analytical equipment to first ampere meter 6 and second ampere meter 6 ', can read, contrast the size of all ampere meter numerical values, through calculating the current difference value of all first ampere meters 6 and second ampere meters 6 ', finds the elastic connection piece that the ammeter that the current difference value is the biggest corresponds, and this elastic connection piece's vertical direction is the wind direction.
it will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.
Claims (9)
1. A wind direction detecting device, comprising: the device comprises a fixed foundation, a plurality of elastic connecting sheets (2) and a direct current power supply (7);
A circle of elastic connecting sheet (2) is uniformly arranged on the edge of the top of the fixed foundation;
The inner side surface of each elastic connecting sheet (2) is provided with a first strain resistance wire (3);
Each first strain resistance wire (3) is connected with a first ammeter (6) in series;
The corresponding first strain resistance wire (3), the first ammeter (6) and the direct-current power supply (7) are connected in series to form a first closed circuit, and the first ammeter (6) can record the change of current in the corresponding first closed circuit.
2. A wind direction detecting device according to claim 1, wherein: a vertical rod (4) is installed on the fixed base, a second strain resistance wire (5) is arranged in the center of the vertical rod (4), the second strain resistance wire (5), a second ammeter (6 ') and a direct-current power supply (7) are connected in series to form a second closed circuit, and the second ammeter (6') can record the change of current in the second closed circuit.
3. A wind direction detecting device according to claim 1, wherein: the elastic connecting sheet (2) is vertically arranged in a natural state; the wind speed stress device is characterized in that the elastic connecting sheet (2) is a wind speed stress device, the elastic connecting sheet (2) is inclined by wind power, the more the wind direction is, the larger the stress of the elastic connecting sheet (2) is, and the larger the inclination amplitude is.
4. A wind direction detecting device according to claim 1, wherein: the first strain resistance wire (3) is arranged in the center of the inner side face of the first elastic connecting piece (2) and is tightly attached to the elastic connecting piece (2), and can deform along with the bending of the elastic connecting piece (2).
5. A wind direction detecting device according to claim 2, wherein: the central vertical rod (4) is kept in an upright state and is not influenced by wind force, and the second strain resistance wire (5) is used for compensating the influence of the ambient temperature on the wind direction detection device.
6. a wind direction detecting device according to claim 1, wherein: the fixed foundation is a circular fixed foundation.
7. A wind direction detecting device according to claim 2, wherein: the vertical rod (4) is arranged in the middle of the elastic connecting piece (2).
8. A wind direction detecting device according to claim 1, wherein: the elastic connecting piece (2) is flat; the wind direction detection device further comprises an ammeter data reading device, and the ammeter data reading device is used for reading current readings of all the first ammeters (6).
9. A wind direction detecting device according to claim 1, wherein: the number of the elastic connecting pieces (2) is even, and all the elastic connecting pieces (2) are fixed on the top of the foundation for one circle; the two opposite elastic connecting sheets (2) are arranged in a central symmetry manner by the center of the fixed foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920912131.5U CN209803176U (en) | 2019-06-17 | 2019-06-17 | Wind direction detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920912131.5U CN209803176U (en) | 2019-06-17 | 2019-06-17 | Wind direction detection device |
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| Publication Number | Publication Date |
|---|---|
| CN209803176U true CN209803176U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920912131.5U Active CN209803176U (en) | 2019-06-17 | 2019-06-17 | Wind direction detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146724A (en) * | 2019-06-17 | 2019-08-20 | 中国华能集团有限公司 | A kind of wind direction detection device and method |
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2019
- 2019-06-17 CN CN201920912131.5U patent/CN209803176U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110146724A (en) * | 2019-06-17 | 2019-08-20 | 中国华能集团有限公司 | A kind of wind direction detection device and method |
| CN110146724B (en) * | 2019-06-17 | 2024-04-26 | 中国华能集团有限公司 | Wind direction detection device and method |
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