A differential pressure wind speed transmitter

Abstract

The invention relates to a differential pressure type wind speed transmitter. Two wind pressure adapting pipes are arranged inside a vacuum pumping pipe in parallel, an electric pressure sensing component is mounted in the vacuum pumping pipe, acrylonitrile butadiene styrene (ABS) plastic plugs capable of sliding vertically up and down are arranged in the wind pressure adapting pipes located inside the vacuum pumping pipe, T-shaped connecting bodies facing the central axis of the vacuum pumping pipe are arranged on side walls of the ABS plastic plugs, and the wind pressure adapting pipes located at the lower part of the ABS plastic plugs are filled with oxygen. The influence of wind pressure on the ABS plastic plugs is fed back to a traditional air pressure difference detection device and is further fed back to the distance between capacitor plates, so that the voltage change between the capacitor plates is influenced; another data acquisition way is provided and has the higher reference value, meanwhile, the sealed vacuum pumping pipe can reduce the influence of the temperature as much as possible, the stability of measurement results is improved, the density of the oxygen used for filling is relatively low, and the displacement range can be larger after the wind pressure is fed back to the ABS plastic plugs.

Description

technical field [0001] The invention relates to a differential pressure wind speed transmitter. Background technique [0002] In the known technical field, the wind speed transmitter is an ideal choice for precise ventilation control applications. It is mainly used to monitor the wind speed. It is generally based on the classic Pitot tube differential pressure principle. Chambers, mine ventilation, and energy management departments often use pitot tubes to measure the wind speed of the pipeline and the airflow velocity in the flue of the kiln. After conversion, the flow rate can be determined, and the water flow velocity in the pipeline can also be measured. Using Pitot tubes to measure speed and determine flow has a reliable theoretical basis, is easy to use, and is accurate. It is a classic and extensive measurement method. Existing wind speed transmitters that adopt the principle of Pitot tube differential pressure are often troubled by temperature and mechanical sensiti...

AI Technical Summary

Problems solved by technology

Existing wind speed transmitters that use the principle of Pitot tube differential pressure are often troubled by temperature and mechanical sensitivity during the sampling process of the air duct. They can only be measured solely by the pressure difference between the two pipes, and the data is not very stable.

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