A split type detachable sand-proof wind speed profile collector

Abstract

A split type detachable anti-sand wind speed profile collector comprises a cylindrical sleeve, a measuring probe, a probe plug-in, a connector and a packaging part, wherein the probe plug-in is connected to the cylindrical sleeve by a fixing screw; the measuring probe is connected to the probe plug-in; 8-10 probe jacks are arranged on the probe plug-in, and the interval between the probe jacks is 2mm~10mm; the measuring probe is composed of a total pressure pipe and a static pressure pipe, one end of the total pressure pipe is provided with a total pressure air inlet and a total pressure air outlet; one end of the static pressure pipe is provided with a static pressure air inlet and a static pressure air outlet; the static pressure air inlet is connected with the static pressure air outlet; and a baffle and a fixing screw are arranged at the tail end of the measuring probe. The present invention is assembled according to the shape characteristics of the experimental detection model, and can determine the suitable height and the height of the measuring probe, which greatly reduces the influence on the airflow flow field test on the model surface, greatly improves the accuracy of the measurement data, and avoids the data deviation caused by human factors caused by multiple measurements through multiple movements in the previous flow field test, so as to achieve the synchronization and consistency of the flow field measurement in the wind tunnel.

Description

Technical Field

[0001] The invention relates to the technical field of wind-sand physics research, in particular to a split-type detachable sand-proof wind speed profile collector. Background Art

[0002] Soil wind erosion is one of the main causes of land degradation in arid, semi-arid and some semi-humid areas in northern my country. Land degradation caused by soil wind erosion has seriously affected the sustainable development of agriculture in these areas. Wind is the most direct driving force for soil wind erosion. The greater the wind speed, the stronger the wind erosion ability. Therefore, the study of soil wind erosion requires obtaining accurate wind speed profiles near the surface of the atmospheric boundary layer.

[0003] In wind tunnel and field measurements, the pressure difference between the total pressure pipe facing the wind and the static pressure in the static pressure pipe can be used to measure the pressure difference distribution characteristics of the vertically distributed wind velocity flow field through a micro-pressure differential sensor and a data acquisition instrument, and the speed value of the vertical distribution of wind velocity, i.e., the wind velocity profile, can be calculated. The wind velocity profile characteristics are not only an indispensable and important link in measuring airflow, but also play a pivotal role in scientific research in the fields of environmental protection engineering, aerospace, etc.

[0004] The wind speed profiler used in current experimental tests is relatively large in size, which affects the airflow field of the test environment. In addition, since the shape and measurement height of the equipment are fixed, but the shapes of the test models are different, it is impossible to select a wind speed profiler of suitable specifications in the experimental test, resulting in low objectivity and accuracy of the experimental test data. Summary of the invention

[0005] The purpose of the present invention is to provide a split-type detachable sand-proof wind speed profile collector. In wind tunnel measurements, the device can be used by experimenters to assemble the collector and determine the vertical height of the installed measuring probe according to the shape characteristics of the test model and the test requirements. The total pressure and static pressure of the airflow are measured to determine the airflow velocity, providing scientific and accurate data for the study of wind and sand physics, especially the study of airflow flow velocity measurement. In addition, the streamlined appearance of the split-type detachable sand-proof wind speed profile collector also greatly reduces the impact on the stability of the airflow field in the experimental test environment, which can meet the experimental needs and provide scientific and accurate test data. At the same time, multiple collectors of this type are spaced at a certain distance and combined into an array to complete all tests on the airflow field characteristics on the model surface under a single wind speed condition, thereby ensuring the simultaneity and consistency of the test data.

[0006] The purpose of the present invention is to be achieved through the following technical solutions:

[0007] A split-type detachable sand-proof wind speed profile collector comprises a cylindrical sleeve, a measuring probe, a probe plug-in, a connector and a packaging component, wherein the probe plug-in is connected to the cylindrical sleeve by a fixing screw; the measuring probe is connected to the probe plug-in; 8-10 probe jacks are arranged on the probe plug-in, and the intervals between the probe jacks are 2mm~10mm; the measuring probe is composed of a total pressure pipe and a static pressure pipe, wherein a total pressure air inlet and a total pressure air outlet are arranged at one end of the total pressure pipe; a static pressure air inlet and a static pressure air outlet are arranged at one end of the static pressure pipe; the static pressure air inlet is communicated with the static pressure air outlet; a baffle and a fixing screw are arranged at the tail end of the measuring probe.

[0008] The total pressure pipe is sleeved with the static pressure pipe.

[0009] The fixing screw port is threadedly connected to the probe jack on the probe plug-in unit.

[0010] Furthermore, the total pressure outlet is connected to a micro-pressure difference sensor and a data acquisition instrument through a hose to perform data measurement.

[0011] Furthermore, the static pressure outlet is connected to a micro-pressure difference sensor and a data acquisition instrument through a hose to perform data measurement.

[0012] The above-mentioned connecting pieces are respectively connected to the connecting holes on the two cylindrical sleeves, so as to assemble the two cylindrical sleeves and realize the height of the wind speed profile collector suitable for the experimental requirements.

[0013] The packaging component is connected to the connecting hole on the cylindrical sleeve to play a sealing role.

[0014] The surface of the cylindrical casing is provided with fixing holes, and the fixing holes are used to fix the entire split-type detachable sand-proof wind speed profile collector.

[0015] A through hole is provided on the rear side of the cylindrical sleeve, and the through hole is used for the passage of a hose connected to the measuring probe.

[0016] According to the shape characteristics of the experimental detection model, multiple cylindrical sleeves are connected through connectors to assemble into a split-type detachable sand-proof wind speed profile collector with a height suitable for the experimental requirements.

[0017] The number and vertical height of the measuring probes were installed according to the test requirements, and the wind speed measurement of the airflow field at different vertical heights on the model surface was achieved.

[0018] The advantages and beneficial effects of the present invention are:

[0019] 1. The present invention has a simple structure, is easy to assemble, solid and durable, can be assembled by itself according to the shape characteristics of the experimental detection model, and determines the suitable height and the height of the measuring probe, so as to achieve high detection accuracy within a certain measurement range; the streamlined shape and small volume greatly reduce the impact of the airflow field test on the model surface, and the measurement data accuracy is greatly improved.

[0020] 2. The present invention is combined into an array form, and under a single wind speed condition, the vertical distribution of airflow velocity is simultaneously measured at different positions on the model surface to determine the characteristics of the airflow field, thereby avoiding data deviation caused by human factors caused by multiple measurements through multiple movements in previous flow field tests, and achieving synchronization and consistency in the measurement of the flow field in the wind tunnel.

[0021] 3. The present invention converts the pressure difference measured by the micro-pressure difference sensor and the data acquisition instrument into the airflow velocity value, which is simple, fast, stable and reliable; it is easy to operate and has high scientific research value.

[0022] 4. The present invention is composed of various components, which is easy to carry and assemble, and can be extended to field installation and testing, so that more accurate scientific research data can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a schematic diagram of the connecting member in the present invention.

[0025] Figure 3 Schematic diagram of the package in the present invention.

[0026] Figure 4 Schematic diagram of the probe plug-in in the present invention.

[0027] Figure 5 It is a schematic diagram of the cylindrical sleeve in the present invention.

[0028] Figure 6 It is a schematic diagram of the measuring probe in the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings:

[0030] like Figure 1As shown, a split-type detachable sand-proof wind speed profile collector comprises a cylindrical sleeve 1, a measuring probe 4, a probe plug-in 7, a connector 8 and a packaging component 9, characterized in that: the probe plug-in 7 is connected to the cylindrical sleeve 1 by a fixing screw 3; the cylindrical sleeve 1 is hollow, and a connecting hole 2 is formed on its two end faces; a slot is opened on one side of the cylindrical sleeve 1, threaded holes are arranged on both sides of the slot, and a through hole 6 is opened on the reverse side; a fixing hole 5 is also arranged on the cylindrical sleeve 1; 8-10 probe jacks 10 are arranged on the probe plug-in 7, and the intervals between the probe jacks 10 are 2mm~10mm; the measuring probe 4 is connected to the probe plug-in 7.

[0031] The measuring probe 4 is composed of a total pressure pipe 45 and a static pressure pipe 46. One end of the total pressure pipe 45 is provided with a total pressure air inlet 41 and a total pressure air outlet 42; one end of the static pressure pipe 46 is provided with a static pressure air inlet 43 and a static pressure air outlet 44; the tail end of the measuring probe 4 is also provided with a baffle 12 and a fixing screw 11.

[0032] The total pressure pipe 45 is sleeved with the static pressure pipe 46 .

[0033] The fixing screw 11 is threadedly connected to the probe jack 10 on the probe plug-in 7 .

[0034] Furthermore, the total pressure outlet 42 is connected to a micro-pressure difference sensor and a data acquisition instrument through a hose to perform data measurement.

[0035] Furthermore, the static pressure outlet 44 is connected to a micro-pressure difference sensor and a data acquisition instrument through a hose to perform data measurement.

[0036] The packaging member 9 is connected to the connecting hole 2 on the cylindrical sleeve 1 to play a sealing role.

[0037] The connecting member 8 is respectively connected to the connecting holes 2 on the two cylindrical sleeves 1, so as to assemble the two cylindrical sleeves 1 and realize the height of the wind speed profile collector suitable for the experimental requirements.

[0038] A fixing hole 5 is provided on the surface of the cylindrical casing 1, and the fixing hole 5 is used to fix the entire split-type detachable sand-proof wind speed profile collector.

[0039] A through hole 6 is provided on the rear side of the cylindrical sleeve 1 , and the through hole 6 is used for the passage of a hose connected to the measuring probe 4 .

[0040] According to the shape characteristics of the experimental detection model, multiple cylindrical sleeves 1 are connected through the connecting piece 8 to assemble into a split-type detachable anti-sand wind speed profile collector height suitable for the experimental requirements.

[0041] The number and vertical height of the measuring probes 4 are installed according to the test requirements, so that the wind speed measurement of the airflow field at different vertical heights on the model surface can be realized. Example

[0042] First, five cylindrical sleeves 1 are connected through a connector 8 and encapsulated with an encapsulation member 9. After determining the vertical height of the measuring probe 4, the total pressure outlet 42 and the static pressure outlet 44 of the measuring probe 4 are first connected to the hose, and then the measuring probe 4 is inserted into the probe jack 10 on the probe plug-in 7 and fixed by the fixing screw 11; then the probe plug-in 7 connected to the measuring probe 4 is inserted along the slot of the cylindrical sleeve 1, and the probe plug-in 7 is connected to the cylindrical sleeve 1 by tightening the fixing screw 3, and finally the entire split-type detachable sand-proof wind speed profile collector is fixed by a fixing rod passing through the fixing hole 5.

[0043] One end of the hose is connected to the total pressure outlet 42 and the static pressure outlet 44 of the measuring probe 4 respectively, and the other end thereof passes through the through hole 6 behind the cylindrical sleeve 1 and is connected to the micro-pressure difference sensor and the data acquisition instrument, so as to realize the wind speed measurement at different vertical heights of the model surface, and store the data through the micro-pressure difference sensor and the data acquisition instrument.

[0044] When the airflow blows toward the measuring probe 4, the total pressure air inlet 41 faces the incoming flow direction of the positive airflow fluid, and the static pressure air inlet 43 faces the outgoing flow direction of the positive fluid. The difference between the total pressure and the static pressure is the measured differential pressure at the center of the pipeline. Therefore, the micro-differential pressure sensor and data acquisition instrument connected to the total pressure outlet 42 and the static pressure outlet 44 can convert the magnitude of the measured wind speed vertical distribution value, and can accurately measure the flow velocity changes at different vertical height points, thereby obtaining the wind speed profile characteristics of the model surface, thereby providing scientific and accurate detection data for fluid mechanics, aerodynamics, meteorology, wind and sand physics, environmental protection engineering, aerospace engineering and other fields.

Claims

1. A split-type detachable sand-proof wind speed profile collector, comprising a cylindrical casing (1), a measuring probe (4), a probe plug-in (7), a connecting piece (8) and a packaging piece (9), characterized in that: The probe plug-in (7) is connected to the cylindrical sleeve (1) via a fixing screw (3); the cylindrical sleeve (1) is hollow and has connecting holes (2) formed on its two end faces; a slot is provided on one side of the cylindrical sleeve (1), threaded holes are provided on both sides of the slot, and a through hole (6) is provided on the reverse side; a fixing hole (5) is also provided on the cylindrical sleeve (1); 8 to 10 probe jacks (10) are provided on the probe plug-in (7), and the intervals between the probe jacks (10) are 2 mm to 10 mm; the measuring probe (4) is connected to the probe plug-in (7); the measuring probe (4) is composed of a total pressure pipe (45) and a static pressure pipe (46), one end of the total pressure pipe (45) is provided with a total pressure air inlet (41) and a total pressure air outlet (42), and one end of the static pressure pipe (46) is provided with a There are static pressure air inlet (43) and static pressure air outlet (44), and the static pressure air inlet (43) is communicated with the static pressure air outlet (44); the tail end of the measuring probe (4) is provided with a baffle (12) and a fixing screw (11); the fixing screw (11) is threadedly connected to the probe jack (10) on the probe plug-in (7); the total pressure air outlet (42) is connected to the micro-pressure difference sensor and the data acquisition instrument through a hose; the static pressure air outlet (44) is connected to the micro-pressure difference sensor and the data acquisition instrument through a hose; the packaging member (9) is connected to the connecting hole (2) on the cylindrical sleeve (1) to play a sealing role; the connecting member (8) is respectively connected to the connecting holes (2) on the two cylindrical sleeves (1) to play a role of assembling the two cylindrical sleeves (1).

2. A split-type detachable sand-proof wind speed profile collector according to claim 1, characterized in that: The fixing hole (5) is used to fix the entire split-type detachable sand-proof wind speed profile collector.

3. The split-type detachable sand-proof wind speed profile collector according to claim 1 is characterized in that: The through hole (6) is used for passing a hose connected to the measuring probe (4).

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