Propeller type anemoscope

Abstract

The invention discloses a propeller type anemoscope, including a propeller, a rotor and a main body. The rotor is located at the head of the main body and can rotate under driving of the propeller, the outer wall of the rotor extends towards the direction of the main body so as to form a shading part in the shape of a rotary surface, and a gap between the rotor and the main body is located in the shading part. According to the technical scheme of the invention, the shading part is adopted to shade gap between the rotor and the main body of the propeller type anemoscope, thereby avoiding freezing rain from directly falling in the gap, and avoiding the phenomenon that the rotor is frozen and cannot rotate. The structure is simple, electricity is not needed, and the propeller type anemoscope is suitable for an automatic meteorological station of a depopulated zone.

Description

technical field [0001] The invention relates to a propeller type anemometer. Background technique [0002] An anemometer is known as an instrument that measures air velocity. There are many types of it, such as wind cup type, propeller type, hot wire type and digital type, etc. The propeller type anemometer is an anemometer with a group of three-bladed or four-bladed propellers rotating around the horizontal axis. The propeller is mounted on the front of a weathervane so that its plane of rotation is always facing the direction of the wind, and its rotational speed is proportional to the wind speed. However, conventional anemometers cannot work effectively in extreme environments such as freezing rain. [0003] Freezing rain is composed of a mixture of ice and water, which collides with objects with a temperature below 0°C and freezes immediately. It is a kind of disastrous weather seen in early winter or late winter and early spring. Raindrops below 0°C can maintain a su...

AI Technical Summary

Problems solved by technology

[0008] However, my country's polar meteorological stations are deployed as unmanned automatic weather stations, and the temperature at the stations is relatively low. If a self-heating anti-freezing anemometer is used, it needs to be heated to a very high temperature (higher than the absolute value of the ambient temperature) in order to The anemometer performs deicing operations, but the high temperature will inevitably cause huge damage to the plastic body of the anemometer itself, which will greatly reduce the life of the instrument and the loss outweighs the gain

On the other hand, the anemometer is powered by solar panels, and is affected by the polar day and polar night, so power resources are very precious

In summary, the above three anemometers that defrost by electric heating are obviously not suitable for meteorological observations in polar environments

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