Split type detachable sand-proof wind speed profile acquisition instrument
A split-type, collection instrument technology, applied in the field of wind and sand physics research, can solve problems such as large size, different shapes of detection models, and influence on the air flow field of the test environment
Pending Publication Date: 2020-10-27
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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Problems solved by technology
[0004] Due to the large size of the wind speed profile collector used in the current experimental testing, it affects the air flow field of the test environment
In addition, since the shape of the equipment and the measurement height are fixed, the shapes of the detection models are different, and it is impossible to select a wind speed profile measuring instrument with suitable specifications in the experimental detection, resulting in the objectivity and accuracy of the experimental detection data. high
Method used
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[0043] First, connect five cylindrical bushings 1 through connectors 8, and package them with package 9. After determining the vertical height of measuring probe 4, connect the total pressure air outlet 42 and static pressure air outlet 44 of measuring probe 4 with the soft Then insert the measuring probe 4 into the probe socket 10 on the probe insert 7, and fix it through the fixing screw 11; then insert the probe insert 7 connected to the measuring probe 4 along the slot of the cylindrical casing 1, and screw it Tighten the fixing screw 3 to connect the probe insert 7 with the cylindrical casing 1, and finally pass the fixing rod through the fixing hole 5 to fix the whole split-type detachable sand-proof wind speed profile collector.
[0044] One end of the hose is respectively connected to the total pressure outlet 42 and the static pressure outlet 44 of the measuring probe 4, and the other end passes through the through hole 6 behind the cylindrical sleeve 1 and is connecte...
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A split type detachable sand-proof wind speed profile acquisition instrument comprises a cylindrical sleeve, a measuring probe, a probe plug-in, a connecting piece and a packaging piece. The probe plug-in is connected with the cylindrical sleeve through a fixing screw; the measuring probe is connected with the probe plug-in; 8-10 probe inserting holes are formed in the probe plug-in, and the interval between every two probe inserting holes ranges from 2 mm to 10 mm; the measuring probe is formed by combining a total pressure pipe and a static pressure pipe; a total pressure air inlet and a total pressure air outlet are formed in one end of the total pressure pipe; a static pressure air inlet and a static pressure air outlet are formed in one end of the static pressure pipe; the static pressure air inlet is communicated with the static pressure air outlet; and the tail end of the measuring probe is provided with a baffle plate and a fixing socket. The acquisition instrument is assembledaccording to the shape characteristics of an experiment detection model, the proper height and the height of the measuring probe can be determined, the influence on the model surface airflow flow field test is greatly reduced, the measurement data precision is greatly improved, the data deviation caused by human factors due to multiple times of measurement through multiple times of movement in the previous flow field test is avoided, and the measurement synchronism and the measurement consistency of the flow field in the wind tunnel are realized.
Description
technical field [0001] The invention relates to the technical field of sandstorm physics research, in particular to a split-type detachable wind speed profile acquisition instrument for sand prevention. Background technique [0002] Soil wind erosion is one of the main causes of land degradation in arid, semi-arid and partly sub-humid areas in northern my country. The land degradation caused by soil wind erosion has seriously affected the sustainable development of agriculture in these areas. The wind is the most direct driving force for soil wind erosion, the greater the wind speed, the stronger the wind erosion ability. It can be seen that the study of soil wind erosion needs to obtain an accurate wind speed profile near the surface of the atmospheric boundary layer. [0003] In wind tunnel and field measurements, the difference between the pressure value in the total pressure pipe facing the wind and the static pressure value in the static pressure pipe can be used to me...
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IPC IPC(8): G01M9/06G01M9/08G01P5/14
CPCG01M9/065G01M9/08G01P5/14
Inventor 李宏赵爱国张耀南
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE