A weather special-purpose wind direction / speed sensor anti-icing cover

Abstract

The utility model discloses a weather special wind direction / wind speed sensor anti -icing cover relates to meteorological observation equipment protection technical field, aims at solving the problem of sensor turntable and base gap icing causes its failure, and the defect of existing anti -icing scheme. The anti -icing cover contains anti -icing cover body and connecting structure, and the body is inverted short neck hopper structure, and the radial dimension covers the turntable and the base, is made with PET transparent plastic material quality and is coated 0.05~0.1mm polytetrafluoroethylene coating outside, is used for reducing the adhesion of frost on the outer surface of the anti -icing cover body, avoids frost accumulation to influence the rotation of turntable and data accuracy, and the connecting structure is fixed with the body on the outer wall of turntable through epoxy resin AB glue, and the body and base reserved gap after installation, and the gap size is controlled in 5~10mm interval. It is blocked by physical shelter from rain and snow water infiltration gap, does not need additional energy consumption, and the structure is simple, convenient to install, and strong, can ensure that the sensor normal operation in low temperature rainy and snowy weather, and guarantees meteorological data continuous and accurate.

Description

Technical Field

[0001] This utility model relates to the field of meteorological observation equipment protection technology, specifically to an anti-icing cover installed on the turntable of a meteorological wind direction / speed sensor, used to prevent the gap between the rotating turntable at the top of the sensor and the sensor base from freezing due to the adhesion of easily icing fluids such as rainwater, snow melt water or frost, which would prevent the sensor from operating normally. Background Technology

[0002] Wind direction / speed sensors are one of the core devices in meteorological observation stations, typically consisting of a wind cup (for speed measurement), a wind vane (for direction measurement), and an internal precision rotating shaft structure. The wind cup and wind vane need to be fixed to a turntable, which rotates to detect wind direction and speed. Smooth rotation of the turntable is crucial for the sensor's accurate operation. In practical applications, sensors are usually directly exposed outdoors, and almost all sensors lack dedicated protective structures. In low-temperature weather, especially in high-altitude, high-humidity, or frigid winter regions, precipitation freezing or snowmelt freezing and frost are highly likely. Liquid water can directly infiltrate the gap between the turntable and the base, directly affecting the turntable's rotation, leading to severe data distortion, or even complete freezing and jamming, rendering the sensor inoperable and seriously impacting the continuity and accuracy of meteorological data.

[0003] In existing technologies, sensor icing is typically removed manually, requiring personnel to climb to the top of a 10-meter-high wind turbine for manual removal. This method poses certain safety hazards and risks of equipment damage. Therefore, some technicians have used sensor heating methods, employing electric heating elements to heat the rotating shaft to prevent icing. However, this method has significant drawbacks: high energy consumption, the need for additional power cables, system complexity, increased costs, and complete failure in power outage scenarios, limiting its applicability. Therefore, there is an urgent need for a simple, energy-efficient, low-maintenance, and highly reliable physical protection device to solve the sensor turntable icing problem. Summary of the Invention

[0004] (1) Purpose of the invention: The purpose of this invention is to overcome the shortcomings of existing meteorological wind direction / speed sensors that are prone to icing and the high maintenance costs or energy consumption of existing anti-icing solutions. It provides an anti-icing cover for meteorological wind direction / speed sensors. This cover has a simple structure, is easy to install, and can effectively block rainwater and frost from contacting the gap between the turntable and the base without additional energy consumption, ensuring the normal operation of the sensor.

[0005] (2) Technical solution: An anti-icing cover for a weather-specific wind direction / speed sensor includes an anti-icing cover body and a connecting structure. The anti-icing cover body has an inverted short-necked funnel structure, with its radial dimension larger than the radial coverage area of ​​the rotating disk at the top of the wind direction / speed sensor and the sensor base. This ensures that rainwater and frost drip from the edge of the anti-icing cover body without directly contacting the rotating disk and the rotation gap between the disk and the sensor base. The connecting structure passes the rotating disk through the funnel neck on the upper side of the anti-icing cover body and fixes the anti-icing cover body onto the rotating disk. After installation, a gap is left between the anti-icing cover body and the sensor base. This gap is a pre-installed gap, with the size controlled in the range of 5-10mm. This avoids interfering with the normal operation of the sensor rotating disk and prevents rainwater and snow from seeping in and flowing through the rotation gap between the rotating disk and the sensor base.

[0006] Furthermore, the anti-icing cover body is made of transparent polyethylene terephthalate (PET) plastic material, with a smooth surface, uniform texture, and relatively hard and thin, making it resistant to aging, weathering, or deformation. The outer surface is coated with a polytetrafluoroethylene coating with a thickness of 0.05-0.1mm, which is used to reduce the adhesion of frost to the outer surface of the anti-icing cover body, preventing frost accumulation from affecting the rotation of the turntable and the accuracy of the data. The connection structure uses epoxy resin AB glue to bond and fix the anti-icing cover body to the turntable, achieving simple and quick installation, ensuring stability, preventing detachment, and preventing water seepage.

[0007] (3) Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are as follows: 1) The anti-icing principle is direct and effective: By physically blocking the inverted short-necked funnel-shaped anti-icing cover, rainwater and frost are prevented from flowing through and seeping into the gap between the turntable and the sensor base. No additional personnel or energy are required, eliminating the safety hazards of "manual de-icing" and the energy consumption problem of "electric heating de-icing". 2) Simple structure and easy maintenance: The overall structure only includes the anti-icing cover body and connecting structure, with no complicated parts, making installation simple and convenient; 3) High adaptability: The radial dimensions and opening size of the anti-icing cover can be flexibly designed according to different models and sizes of sensors, and it is compatible with most conventional meteorological wind direction / speed sensors as well as some other wind direction / speed sensors. Attached Figure Description

[0008] Figure 1 Top view of the anti-icing cover body; dimensions in the drawing are in mm. Figure 2 : Front view of the anti-icing cover body; dimensions in the drawing are in mm. Figure 3Top view of the connection structure between the anti-icing cover and the sensor; dimensions in the figure are in mm. Figure 4 : Main view of the connection structure between the anti-icing cover body and the sensor. The dimensions in the figure are in mm.

[0009] The component labels in the diagram are as follows: 1. Anti-icing cover body; 1a. Anti-icing cover funnel-shaped face (coated area); 1b. Anti-icing cover funnel-shaped neck (inner adhesive coating); 2. Wind direction / speed sensor turntable; 3. Wind direction / speed sensor base. Detailed Implementation

[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0011] This embodiment provides an anti-icing cover for a meteorological wind direction / speed sensor. Figure 1 , Figure 2 This is applicable to a weather-specific wind direction / speed sensor (model EL15-1). The upper turntable of this sensor has a frustum structure that is narrow at the top and wide at the bottom, with a maximum outer diameter of 50mm and a maximum outer diameter of 70mm for the sensor base.

[0012] (1) Design of the anti-icing cover body: Material: Made of transparent polyethylene terephthalate (PET) plastic, it can be made into an inverted short-necked funnel structure through injection molding. Dimensions: The total height of the anti-icing cover is 30mm, the maximum radial diameter is 90mm (10mm greater than the radial coverage of the sensor base), and the thickness is 0.5mm. The vertical height of the funnel-shaped neck of the anti-icing cover is 5.0mm, and the inner diameter of the neck opening is 50.0mm (consistent with the maximum diameter of the outer wall of the upper turntable of the sensor). The slope of the funnel-shaped face of the anti-icing cover is approximately 70° (error ±2°) to ensure that rainwater and snowmelt drip quickly down the outer surface and do not accumulate. External surface treatment: A polytetrafluoroethylene coating is formed on the outer surface of the anti-icing cover body by spraying. The coating thickness is 0.05-0.1mm. After spraying, it is dried for 2 hours or air-dried for more than 6 hours to ensure the adhesion of the coating.

[0013] (2) Design of the connection structure: Structure: The connection structure is an adhesive bonding structure.

[0014] (3) Installation steps (the installation steps for wind direction / wind speed sensors are the same; the following uses wind speed sensors as an example): Clean the outer surface of the sensor turntable and the inner wall of the funnel neck of the anti-icing cover body to ensure that there are no impurities at the adhesion points; Apply epoxy resin AB glue evenly to the inner wall of the funnel-shaped neck of the anti-icing cover, and slowly pass the funnel neck of the anti-icing cover body through the turntable from top to bottom until the anti-icing cover body and the outer wall of the turntable are completely adhered. Check if the anti-icing cover is centered, ensure that the funnel surface completely covers the sensor base without any offset, wipe off any overflow or excess colloid from the outer wall of the turntable, and let it stand for 1-2 hours. After installation, the turntable can be rotated normally by gently turning it. The sensor base does not affect the anti-icing cover body from rotating with the sensor turntable. Liquid water falls onto the outer funnel surface of the anti-icing cover body and drips off the edge.

[0015] (4) Verification of usage effect: In a rain or snowmelt environment of -10℃ to 5℃, the sensor with the cover of this embodiment installed was compared with the same model sensor without the anti-icing cover for 72 hours: the sensor without the anti-icing cover had its turntable frozen and stuck after 12 hours, and the data was interrupted; the sensor with the cover of this embodiment installed did not have any icing on the shaft, and the data was continuous and accurate, verifying the effectiveness of this solution.

Claims

1. A weather-specific wind direction / speed sensor anti-icing cover, characterized in that, include: The anti-icing cover body (1) is an inverted short-necked funnel structure. Its radial dimension is larger than the radial coverage of the rotating turntable (A) and sensor base (B) at the upper end of the wind direction / speed sensor. It is used to block rainwater, snow melt water or frost from directly contacting the turntable (A) and the rotation gap between it and the sensor base (B). The connection structure (2) is to pass the funnel neck of the anti-icing cover body (1) through the turntable (A) and fix the anti-icing cover body (1) on the outer wall of the turntable (A). After installation and fixing, a gap of 5-10mm is left between the anti-icing cover body (1) and the sensor base (B). This avoids interfering with the normal operation of the turntable (A) after it is connected and fixed, and also prevents rainwater, snow melt water or frost from seeping in and flowing through the rotation gap between the turntable (A) and the sensor base (B).

2. The anti-icing cover for the meteorological wind direction / speed sensor according to claim 1, characterized in that, include: The anti-icing cover body (1) is made of polyethylene terephthalate (PET) transparent plastic, with a smooth surface, uniform texture, and is relatively hard and thin, making it resistant to aging, weathering, or deformation. The outer surface of the anti-icing cover body (1) is coated with a polytetrafluoroethylene coating with a thickness of 0.05-0.1 mm. This coating is used to reduce the adhesion of frost to the outer surface of the anti-icing cover body (1) and prevent frost accumulation from affecting the rotation of the turntable (A) and the accuracy of the data. The connection structure (2) is used to bond and fix the anti-icing cover body (1) to the turntable (A) with epoxy resin AB glue, so as to achieve simple and quick installation and ensure that it is stable, prevents falling off and prevents water seepage.

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