A wind speed correction device based on a wind speed sensor
By combining the design of the support frame, main air duct, centrifugal fan and negative pressure suction pipe, the problem of reduced wind speed detection accuracy caused by mechanical wear was solved, and the accuracy of wind speed correction was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANDONG MEASUREMENT SCI RES INST
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-31
AI Technical Summary
Existing wind speed correction devices are susceptible to mechanical wear, which leads to a decrease in the accuracy of wind speed detection.
A wind speed correction device based on a wind speed sensor is adopted, including a support frame, a main air duct, a centrifugal fan, a transposition wheel, and a negative pressure suction pipe. By controlling the liquid density and water level, the accuracy of wind speed detection is ensured.
It achieves the goal of maintaining the accuracy of wind speed detection under mechanical wear conditions, and ensures the accuracy of wind speed correction by combining negative pressure suction pipe and liquid level detection.
Smart Images
Figure CN121476648B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wind speed corrector technology, and in particular to a wind speed correction device based on a wind speed sensor. Background Technology
[0002] Wind speed sensors are commonly used in meteorological monitoring, aerospace, wind power generation, and environmental protection, all of which require high accuracy in wind speed data. During long-term use, the internal components of a wind speed sensor may experience performance degradation due to environmental factors (such as temperature, humidity, and pollutants), leading to a decrease in measurement accuracy. Regular wind speed calibration ensures that the sensor's output matches the actual wind speed, avoiding errors caused by aging or other factors.
[0003] Research indicates that devices used for wind speed sensor correction typically involve standardized wind speed generation devices to simulate real-world wind speed environments and aid in sensor calibration. Existing wind speed simulation mechanisms often generate wind force first, then place an impeller downwind of the wind force. The wind speed is then determined by detecting the impeller's rotational speed or observing and recording its converted vector. This detection method suffers from gradual changes in accuracy due to the frequency of impeller use. Therefore, we propose a novel wind speed correction device that is not affected by mechanical wear. Summary of the Invention
[0004] To address the technical problem that existing wind correctors are susceptible to mechanical wear, which in turn affects the actual wind force, this invention adopts the following technical solution:
[0005] A wind speed correction device based on a wind speed sensor includes a second support frame and a first support frame with an overall A-shaped structure. A main air duct extending horizontally towards the second support frame is inserted into the top of the first support frame. A centrifugal fan, sealed and connected to the port of the main air duct, is fixed to the top of the second support frame. The air inlet of the centrifugal fan is sealed and inserted into the inlet of the main air duct. A rectangular slot is formed near the center of the bottom of the outer circumference of the main air duct, and a disc-shaped transposition wheel is slidably connected within the rectangular slot. Multiple variable-diameter channel plugs with different apertures are provided on the side of the transposition wheel near its circumferential edge. The inner circumference of the main duct is provided with a sealing inner retaining ring and a sliding clamping ring on both sides near the transposition wheel, with the sealing inner retaining ring located near the centrifugal fan. A vertically extending negative pressure suction pipe is inserted into the middle position of the sealing inner retaining ring on the outer circumference of the main duct. The top opening of the negative pressure suction pipe is located on the axis of the sealing inner retaining ring and the main duct. The bottom end of the negative pressure suction pipe is provided with an extended water tank with an upward opening, filled with colored liquid. The bottom end of the negative pressure suction pipe is inserted underwater in the extended water tank. A detection port is provided on the outer wall of the main duct above the negative pressure suction pipe.
[0006] Preferably, a channel steel fixing plate is fixed near the top of the side of the support frame two near the shifting wheel, and a sealed water bucket with a vertically downward extending overall hollow cylindrical structure is fixed at the end of the channel steel fixing plate. A water outlet hole is opened on the outer circumference of the sealed water bucket near the bottom and near the extended water trough, and one end of the extended water trough is sealed and inserted into the water outlet hole. The height of the water outlet hole is lower than the height of the top edge of the extended water trough.
[0007] Preferably, a dust cover is fixed to the outer wall of the sealed water tank near the upper part of the extended water tank, and a gap is left between the lower surface of the dust cover and the top edge of the extended water tank.
[0008] Preferably, a rubber plug tube is sealed and inserted into the detection port, and a fixing platform is fixed on the outer circumference of the main air duct near the outer circumference of the rubber plug tube; a sealing putty is provided at the opening of the rubber plug tube; when testing the wind speed detector to be calibrated, the detection end only needs to be passed through the rubber plug tube to the air outlet position, and then the opening of the rubber plug tube can be sealed with sealing putty.
[0009] Preferably, the inner circumferential wall of the sealing inner retaining ring has two strip-shaped notches, one and two, on the end away from the sliding abutment ring, and the diameters of the first and second strip-shaped notches are respectively adapted to the diameters of the rubber plug tube and the negative pressure suction tube; a sealing gasket is embedded on the side of the sealing inner retaining ring near the shifting wheel; three anti-torsion guide rods are fixed on the inner circumferential wall of the main air duct away from the centrifugal fan, and a retaining spring is provided between the anti-torsion guide rod and the outer wall of the sliding abutment ring; a guide groove is provided on the end of the sliding abutment ring near the anti-torsion guide rod; a circular hole with a diameter adapted to the negative pressure suction tube is provided on the outer wall of the main air duct, ensuring that the sliding abutment ring can only slide axially and is tightly pressed against the side of the shifting wheel.
[0010] Preferably, the inner circumference of the sliding retaining ring away from the sealing inner retaining ring has an internal thread, and a guide ring with a trumpet-shaped structure is screwed into the internal thread. A gap is left between the outer circumference of the flared part of the guide ring and the inner circumference of the main air duct; this reduces the vortex at the air inlet and ensures smooth airflow at the air inlet.
[0011] Preferably, the inner circumference of the shifting wheel is fixed with multiple centripetally distributed spokes, and all spokes are fixed with the same drive shaft. The middle of the support frame is fitted with an anti-detachment bearing below the main air duct, and the drive shaft is inserted into the inner ring of the anti-detachment bearing. The outer circumference of the shifting wheel is provided with multiple shifting grooves to facilitate rotation. This allows for the replacement of variable diameter channel plugs with different orifice diameters into the working position.
[0012] Preferably, the shifting wheel has multiple spherical positioning grooves symmetrically distributed on the side near the sliding abutment ring, and each spherical positioning groove is aligned with the relative position of the adjacent variable diameter channel plug; the sliding abutment ring has an insertion hole on the side near the shifting wheel, and a compression spring is fixed to the bottom of the insertion hole. A positioning post is fixed to the end of the compression spring near the shifting wheel, and a positioning protrusion with a size matching the spherical positioning groove is reserved at the end of the positioning post near the shifting wheel; by setting the positioning protrusion pressed by the compression spring, in conjunction with the spherical positioning groove, the variable diameter channel plug after rotation and replacement can be quickly and accurately aligned during use.
[0013] Preferably, a vertically downward extending fixed hanging plate is fixed to the inner circumference of the main air duct between the inner sealing ring and the centrifugal fan. A horizontal transmission shaft passing through the center of the inner circumference of the inner sealing ring is rotatably connected to the inner circumference of the inner sealing ring near the air outlet. Both ends of the transmission shaft are fitted with radial bearings, which are respectively embedded in the inner sealing ring. An inclined downward-hanging detection air plate is fixed to the middle of the transmission shaft. A short shaft parallel to the transmission shaft is fixed to one side of the bottom of the detection air plate, and an arc-shaped rack is fixed to the end of the short shaft. The center of the arc-shaped rack falls on the transmission shaft. An intermediate gear meshing with the arc-shaped rack is fixed to the bottom of the fixed hanging plate. The gear and the bottom of the fixed hanging plate are equipped with a semi-sliding retaining ring, and a vertical rack rod is slidably connected in the plate sliding retaining ring. The rack rod meshes with the middle gear and moves in the opposite direction to the arc-shaped rack. A piston plate is fixed to the bottom of the rack rod, and a piston barrel with an upward-opening cylindrical structure is slidably sleeved on the outer wall of the piston plate. An L-shaped liquid level tube extending upward from the main body is inserted into the bottom of the piston barrel. The outer wall of the main air duct has a piston barrel hole for engaging the piston barrel. The piston barrel is filled with a colored liquid. Both the L-shaped liquid level tube and the negative pressure suction tube are glass tubes. With this configuration, the same wind speed can be detected in different ways, ensuring the accuracy of the final value.
[0014] Preferably, the vertical outer walls of both the L-shaped liquid level tube and the negative pressure suction tube are fitted with scale plates to facilitate height measurement.
[0015] The beneficial effects of this invention are as follows:
[0016] 1. By setting a negative pressure suction pipe that is inserted into the outer wall of the main air duct and extends upward to the center, when detecting wind speed, it is only necessary to control the density of the liquid to be consistent each time to ensure that the liquid level drawn up at the same wind speed is the same, and then the wind speed of each wind speed sensor to be calibrated is corrected.
[0017] 2. By using a sealed water tank and an extended water trough inserted into the water outlet, the water level at the bottom of the negative pressure suction pipe can be kept constant during testing, ensuring that the bottom of the negative pressure suction pipe is always inserted into the liquid, thereby ensuring the accuracy of the test data.
[0018] 3. By setting a positioning protrusion that is pressed by a compression spring, and in conjunction with the setting of a spherical positioning groove, the variable diameter channel plug can be quickly and accurately aligned during use. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0020] Figure 2 This is a schematic diagram of the other side of the structure of the present invention;
[0021] Figure 3 This is a top view of the present invention;
[0022] Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure along line AA;
[0023] Figure 5 This is the front view of the present invention;
[0024] Figure 6 This is an assembly diagram of the sliding abutment ring in this invention;
[0025] Figure 7 For the present invention Figure 6 A schematic diagram of the three-dimensional structure on the other side;
[0026] Figure 8 This is an assembly diagram of the detection air plate in this invention.
[0027] In the diagram: 1. Support frame one; 2. Main air duct; 201. Rectangular slot; 202. Detection port; 203. Piston barrel hole; 204. Round hole one; 3. Actuating groove; 4. Transposition wheel; 401. Spherical positioning groove; 5. Rubber stopper tube; 6. L-shaped liquid level tube; 7. Fixed platform; 8. Piston barrel; 9. Centrifugal fan; 10. Support frame two; 11. Sealed water tank; 1101. Water outlet; 12. Extended water tank; 13. Dust cover; 14. Negative pressure suction pipe; 15. Variable... 16. Channel steel fixing plate; 17. Scale plate; 18. Sealing inner retaining ring; 181. Strip notch one; 182. Strip notch two; 19. Sliding clamping ring; 191. Guide groove; 192. Insertion hole; 193. Positioning protrusion; 20. Air guide ring; 21. Anti-torsion guide rod; 22. Drive shaft rod; 23. Anti-detachment bearing; 24. Detection air plate; 25. Fixed hanging plate; 26. Radial bearing; 27. Piston plate; 28. Arc-shaped rack; 29. Drive shaft rod. Detailed Implementation
[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0029] In this embodiment, refer to Figures 1-8 A wind speed correction device based on a wind speed sensor includes a second support frame 10 and a first support frame 1 with an overall A-shaped structure. A main air duct 2 extending horizontally towards the second support frame 10 is inserted into the top of the first support frame 10. A centrifugal fan 9, which is sealed and connected to the port of the main air duct 2, is fixed to the top of the second support frame 10. The air inlet of the centrifugal fan 9 is sealed and inserted into the opening of the main air duct 2. A rectangular slot 201 is formed near the center of the bottom end of the outer circumference of the main air duct 2, and a disc-shaped transposition wheel 4 is slidably connected in the rectangular slot 201. Multiple variable-diameter channel plugs 15 with different apertures are provided on the side of the transposition wheel 4 near its circumferential edge. Using different variable-diameter channel plugs 15 will result in different wind speeds passing through them, thus enabling correction at the required wind speed. Sealing inner walls are respectively provided on both sides of the inner circumference of the main air duct 2 near the transposition wheel 4. The system includes a retaining ring 18 and a sliding clamping ring 19, with the inner retaining ring 18 located near the centrifugal fan 9. A vertically extending negative pressure suction pipe 14 is inserted into the middle of the inner retaining ring 18 on the outer circumference of the main air duct 2. The top opening of the negative pressure suction pipe 14 is located on the axis of the inner retaining ring 18 and the main air duct 2. The bottom end of the negative pressure suction pipe 14 is provided with an extended water tank 12 with an upward opening filled with colored liquid. The bottom end of the negative pressure suction pipe 14 is inserted underwater in the extended water tank 12. A detection port 202 is provided on the outer wall of the main air duct 2 above the negative pressure suction pipe 14. By setting the negative pressure suction pipe 14, which is inserted into the outer wall of the main air duct 2 and extends upward to the center, when detecting wind speed, it is only necessary to control the density of the liquid to be consistent each time to ensure that the liquid level drawn up at the same wind speed is the same, thereby correcting the wind speed of each wind speed sensor to be calibrated.
[0030] A channel steel fixing plate 16 is fixed near the top of the support frame 2 10 near the transposition wheel 4. A sealed water tank 11 with a hollow cylindrical structure extending vertically downward is fixed to the end of the channel steel fixing plate 16. A water outlet 1101 is opened on the outer circumference of the sealed water tank 11 near the bottom and near the extended water trough 12. One end of the extended water trough 12 is sealed and inserted into the water outlet 1101. The height of the water outlet 1101 is lower than the height of the top edge of the extended water trough 12. By setting the sealed water tank 11 and the extended water trough 12 inserted into the water outlet 1101, the water level at the bottom of the negative pressure suction pipe 14 can always be kept constant during the test, and the bottom of the negative pressure suction pipe 14 can always be inserted into the liquid, thereby ensuring the accuracy of the test data.
[0031] Reference Figure 1and Figure 3 A dust cover 13 is fixed on the outer wall of the sealed water tank 11 near the top of the extended water tank 12, and a gap is left between the lower surface of the dust cover 13 and the top edge of the extended water tank 12.
[0032] Reference Figures 4-5 A rubber plug tube 5 is sealed and inserted into the detection port 202, and a fixed platform 7 is fixed on the outer circumference of the main air duct 2 near the outer circumference of the rubber plug tube 5; a sealing putty is provided at the opening of the rubber plug tube 5; when testing the wind speed detector to be calibrated, the detection end only needs to be passed through the rubber plug tube 5 to the air outlet position, and then the opening of the rubber plug tube 5 can be sealed with sealing putty.
[0033] Reference Figure 6 and Figure 8 The inner circumference of the sealing inner retaining ring 18 has two strip-shaped notches, one 181 and the other 182, on the end away from the sliding abutment ring 19. The diameters of the strip-shaped notches 181 and 182 are respectively matched with the diameters of the rubber plug tube 5 and the negative pressure suction tube 14. A sealing gasket is embedded on the side of the sealing inner retaining ring 18 near the shifting wheel 4. Three anti-torsion guide rods 21 are fixed on the inner circumference of the main air duct 2 away from the centrifugal fan 9. A retaining spring is provided between the anti-torsion guide rod 21 and the outer wall of the sliding abutment ring 19. A guide groove 191 is opened on the end of the sliding abutment ring 19 near the anti-torsion guide rod 21. A circular hole 204 matching the diameter of the negative pressure suction tube 14 is opened on the outer wall of the main air duct 2 to ensure that the sliding abutment ring 19 can only slide axially and is tightly pressed against the side of the shifting wheel 4.
[0034] Reference Figure 4 and Figure 6 The sliding retaining ring 19 has an internal thread on the inner circumference of one end away from the sealing inner retaining ring 18, and a guide ring 20 with a trumpet-shaped structure is screwed into the internal thread. There is a gap between the outer circumference of the flared part of the guide ring 20 and the inner circumference of the main air duct 2; this reduces the vortex at the air inlet and ensures smooth airflow at the air inlet.
[0035] Reference Figure 4 The inner circumference of the shift wheel 4 is fixed with multiple radially distributed spokes, and all spokes are fixed with the same drive shaft 22. The middle of the support frame 1 is located below the main air duct 2 and is fitted with an anti-detachment bearing 23, and the drive shaft 22 is inserted into the inner ring of the anti-detachment bearing 23. The outer circumference of the shift wheel 4 is provided with multiple shifting grooves 3 to facilitate rotation. It is convenient to replace the variable diameter channel plugs 15 with different diameters and put them into the working position.
[0036] Reference Figure 4 , Figure 6 , Figure 7The shifting wheel 4 has multiple spherical positioning grooves 401 arranged symmetrically on the side near the sliding clamping ring 19, and each spherical positioning groove 401 is aligned with the corresponding variable diameter channel plug 15. The sliding clamping ring 19 has an insertion hole 192 on the side near the shifting wheel 4, and a compression spring is fixed to the bottom of the insertion hole 192. A positioning post is fixed to the end of the compression spring near the shifting wheel 4, and a positioning protrusion 193 with a size matching the spherical positioning groove 401 is reserved at the end of the positioning post near the shifting wheel 4. By setting the positioning protrusion 193 pressed by the compression spring, in conjunction with the spherical positioning groove 401, the variable diameter channel plug 15 after rotation can be quickly and accurately aligned during use.
[0037] Reference Figure 4 and Figure 8 A vertically extending fixed hanging plate 25 is fixed to the inner circumference of the main air duct 2 between the inner sealing ring 18 and the centrifugal fan 9. A horizontal drive shaft 29, passing through the center of the circle, is rotatably connected to the inner circumference of the inner sealing ring 18 near the air outlet. Both ends of the drive shaft 29 are fitted with radial bearings 26, which are respectively embedded in the inner sealing ring 18. An inclined downward-hanging detection air plate 24 is fixed to the middle of the drive shaft 29. A short shaft parallel to the drive shaft 29 is fixed to one side of the bottom of the detection air plate 24, and an arc-shaped rack 28 is fixed to the end of the short shaft. The center of the arc-shaped rack 28 falls on the drive shaft 29. The bottom of the fixed hanging plate 25 is fixed with a component parallel to the arc-shaped rack 28. The meshing intermediate gear has a semi-sliding retaining ring at the bottom of the fixed hanging plate 25, and a vertical rack rod is slidably connected in the plate sliding retaining ring. The rack rod meshes with the intermediate gear and moves in the opposite direction to the arc-shaped rack 28. A piston plate 27 is fixed at the bottom of the rack rod, and a piston barrel 8 with an upward-opening cylindrical structure is slidably sleeved on the outer wall of the piston plate 27. An L-shaped liquid level pipe 6 extending upward from the main body is inserted into the bottom of the piston barrel 8. A piston barrel hole 203 is opened on the outer wall of the main air duct 2 to lock the piston barrel 8. The piston barrel 8 is filled with colored liquid. The L-shaped liquid level pipe 6 and the negative pressure suction pipe 14 are both glass tubes. With this setting, the same wind speed can be detected in different ways to ensure the accuracy of the final value.
[0038] Reference Figure 3 , Figure 5 , Figure 8 The vertical pipe outer walls of the L-shaped liquid level pipe 6 and the negative pressure suction pipe 14 are fitted with scale plates 17 to facilitate height measurement.
[0039] Working principle: When using this device, the detection end is passed through the rubber stopper tube 5 to the air outlet position, and then the opening of the rubber stopper tube 5 is sealed with sealing putty; then, a suitable variable diameter channel plug 15 is selected and rotated between the sealing inner retaining ring 18 and the sliding abutment ring 19; then, the centrifugal fan 9 is started for detection. When the wind speed gradually increases, the airflow will pass through the top opening of the negative pressure suction tube 14. The high-speed airflow will generate high negative pressure, which will then draw up the colored liquid in the extended water tank 12. The higher the liquid level, the greater the wind speed. Each height represents a wind speed level. At this time, observe whether the wind speed displayed on the wind speed sensor is the same as the wind speed level of the liquid level, and make corresponding adjustments.
[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A wind speed correction device based on a wind speed sensor, comprising a second support frame (10) and a first support frame (1) having an overall A-shaped structure, wherein a main air duct (2) extending horizontally toward the second support frame (10) is inserted into the top of the first support frame (1), and a centrifugal fan (9) is fixed to the top of the second support frame (10) and sealed to the port of the main air duct (2), wherein the air inlet of the centrifugal fan (9) is sealed to the port of the main air duct (2), characterized in that, The outer circumference of the main air duct (2) has a rectangular slot (201) near the middle of the bottom end, and a disc-shaped transposition wheel (4) is slidably connected in the rectangular slot (201). Multiple variable-diameter channel plugs (15) with different apertures are provided on the side of the transposition wheel (4) near the circumferential edge. Sealing inner rings (18) and sliding clamping rings (19) are respectively provided on both sides of the inner circumference of the main air duct (2) near the transposition wheel (4), and the sealing inner rings (18) are located near the centrifugal fan (9). (2) The outer circumference of the main air duct (2) is connected to the middle position of the inner sealing ring (18) with a vertically downward-extending negative pressure suction tube (14). The top end of the negative pressure suction tube (14) is located on the axis of the inner sealing ring (18) and the main air duct (2). The bottom end of the negative pressure suction tube (14) is provided with an extended water tank (12) with an upward opening and filled with colored liquid. The bottom end of the negative pressure suction tube (14) is inserted underwater in the extended water tank (12). The outer wall of the main air duct (2) is provided with a detection port (202) above the negative pressure suction tube (14). The support frame 2 (10) is fixed with a channel steel fixing plate (16) near the top of the side close to the shifting wheel (4), and a sealed water tank (11) with a vertically downward extending overall hollow cylindrical structure is fixed at the end of the channel steel fixing plate (16). A water outlet hole (1101) is opened on the outer circumference of the sealed water tank (11) near the bottom and near the outer water tank (12), and one end of the outer water tank (12) is sealed and inserted into the water outlet hole (1101). The height of the water outlet hole (1101) is lower than the height of the top edge of the outer water tank (12). The shifting wheel (4) has multiple spherical positioning grooves (401) that are centrally symmetrically distributed on the side near the sliding abutment ring (19), and each spherical positioning groove (401) is in the same position as the adjacent variable diameter channel plug (15); the sliding abutment ring (19) has an insertion hole (192) on the side near the shifting wheel (4), and a compression spring is fixed at the bottom of the insertion hole (192). A positioning post is fixed at one end of the compression spring near the shifting wheel (4), and a positioning protrusion (193) that matches the size of the spherical positioning groove (401) is reserved at one end of the positioning post near the shifting wheel (4). The inner circumference of the main air duct (2) is fixed with a vertically downward extending fixed hanging plate (25) between the inner sealing ring (18) and the centrifugal fan (9). The inner circumference of the inner sealing ring (18) is rotatably connected to a horizontal transmission shaft (29) passing through the center of the circle near the air outlet. Both ends of the transmission shaft (29) are fitted with radial bearings (26), which are respectively embedded in the inner sealing ring (18). A downwardly tilted detection air plate (24) is fixed in the middle of the transmission shaft (29). A short shaft parallel to the transmission shaft (29) is fixed to one side of the bottom of the detection air plate (24), and an arc-shaped rack (28) is fixed to the end of the short shaft. The center of the arc-shaped rack (28) falls on the transmission shaft (29). The bottom end of the fixed hanging plate (25) is fixed with an intermediate gear that meshes with the arc-shaped rack (28). The bottom end of the fixed hanging plate (25) is also provided with a semi-sliding retaining ring, and a vertical rack rod is slidably connected in the plate sliding retaining ring. The rack rod meshes with the intermediate gear and moves in the opposite direction to the arc-shaped rack (28). The bottom end of the rack rod is fixed with a piston plate (27), and the outer wall of the piston plate (27) is slidably fitted with a piston barrel (8) with an upward-opening cylindrical structure. The bottom end of the piston barrel (8) is inserted with an L-shaped liquid level pipe (6) extending upward from the main body. The outer wall of the main air pipe (2) has a piston barrel hole (203) for clamping the piston barrel (8). The piston barrel (8) is filled with a colored liquid. The L-shaped liquid level pipe (6) and the negative pressure suction pipe (14) are both glass tubes.
2. The wind speed correction device based on a wind speed sensor according to claim 1, characterized in that A dust cover (13) is fixed on the outer wall of the sealed water tank (11) near the top of the extended water tank (12), and a gap is left between the lower surface of the dust cover (13) and the top edge of the extended water tank (12).
3. The wind speed correction device based on a wind speed sensor according to claim 2, characterized in that A rubber plug tube (5) is sealed and inserted into the detection port (202), and a fixed platform (7) is fixed on the outer circumference of the main air duct (2) near the outer circumference of the rubber plug tube (5); a sealing putty is provided at the opening of the rubber plug tube (5).
4. The wind speed correction device based on a wind speed sensor according to claim 3, characterized in that The inner circumference of the sealing inner ring (18) has a strip-shaped notch 1 (181) and a strip-shaped notch 2 (182) at the end away from the sliding abutment ring (19), and the diameters of the strip-shaped notch 1 (181) and the strip-shaped notch 2 (182) are respectively adapted to the diameters of the rubber plug tube (5) and the negative pressure suction tube (14); a sealing gasket is embedded on the side of the sealing inner ring (18) near the shifting wheel (4); three anti-torsion guide rods (21) are fixed on the inner circumference of the main air pipe (2) away from the centrifugal fan (9); and a clamping spring is provided between the anti-torsion guide rod (21) and the outer wall of the sliding abutment ring (19), and a guide groove (191) is opened at the end of the sliding abutment ring (19) near the anti-torsion guide rod (21); a circular hole 1 (204) adapted to the diameter of the negative pressure suction tube (14) is opened on the outer wall of the main air pipe (2).
5. The wind speed correction device based on a wind speed sensor according to claim 1, characterized in that, The sliding clamping ring (19) has an internal thread on the inner circumference of the end away from the sealing inner ring (18), and a guide ring (20) with a trumpet-shaped structure is screwed into the internal thread. There is a gap between the outer circumference of the flared part of the guide ring (20) and the inner circumference of the main air pipe (2).
6. The wind speed correction device based on a wind speed sensor according to claim 1, characterized in that, The inner circumference of the shift wheel (4) is fixed with multiple centripetally distributed spokes, and all spokes are fixed with the same drive shaft (22). The middle of the support frame (1) is located below the main air duct (2) and is fitted with an anti-detachment bearing (23), and the drive shaft (22) is inserted into the inner ring of the anti-detachment bearing (23). The outer circumference of the shift wheel (4) is provided with multiple shifting grooves (3) to facilitate shifting and rotation.
7. A wind speed correction device based on a wind speed sensor according to claim 1, characterized in that, The vertical outer walls of the L-shaped liquid level tube (6) and the negative pressure suction tube (14) are both fitted with scale plates (17).