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Dynamic detection wind tunnel of air line type stepless speed regulating aerosol

A technology of stepless speed regulation and dynamic detection, which is used in aerodynamic testing, testing of machine/structural components, measuring devices, etc. Reliability and precision, effect of reducing impact

Inactive Publication Date: 2009-05-27
CHINESE ACAD OF METEOROLOGICAL SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combustion section of the test wind tunnel has a diameter of 25.4 cm, a length of 1.5 meters, and a design wind speed of 40 m / s. The full-scale positive pressure and constant velocity sampling of the flame rod, but the positive pressure detection is used. When the sampling nozzle is facing the aerosol flow for sampling, due to Due to the inertia of aerosol particles, when the flow velocity of the aerosol flowing into the sampling nozzle is greater than the flow velocity in the wind tunnel, the result will be low, otherwise it will be high
Therefore, the results of positive pressure detection are still inaccurate

Method used

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  • Dynamic detection wind tunnel of air line type stepless speed regulating aerosol
  • Dynamic detection wind tunnel of air line type stepless speed regulating aerosol
  • Dynamic detection wind tunnel of air line type stepless speed regulating aerosol

Examples

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Embodiment Construction

[0022] Please refer to the schematic structural diagram of the dynamic detection wind tunnel of the straight-way stepless speed regulation aerosol shown in Fig. 1, the detection wind tunnel includes an air filtration system 1, a wind tunnel body 2 and a suction diluter 3;

[0023] The air filtration system 1 comprises 7 0.3 micron DOP (dioctyl phthalate) filter efficiency air filters 11 (only 5 are shown in the figure) and a stepless speed regulating drum induced draft fan 12 with a filtration efficiency of 99.99%, The induced draft fan 12 is provided with seven protruding air inlets 121, each air inlet 121 is fixedly connected with an air filter 11 through the first rubber hose 4, and the first metal clamp 8 is fixed on the second A rubber tube 4 outside. These 7 air filters 11 are arranged side by side at the air inlet of the blower fan. The induced draft fan 12 adopts a centrifugal fan driven by a 45 kilowatt three-phase motor, which can perform stepless speed regulation t...

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Abstract

A dynamic testing wind tunnel for straight-road type stepless speed aerosol comprises an air filtering system, a wind tunnel body and a suction type dilutor, wherein the air filtering system comprises a plurality of air filters and a stepless speed draft fan, a plurality of air inlets which are connected with the air filters and an air outlet are arranged on the draft fan; the wind tunnel body comprises a combustion section comprising a hollow cylindrical tube and a catalyzer device arranged therein, and a diffusion section being of hollow cylinder, one end of which is straight discharge end, the other end is tapered port; the diffusion section is connected with the combustion section through flange, and the combustion section is connected with the draft fan, the other end of the diffusion section is connected with the suction type dilutor; a pitot tube speed-measurement fitting port is respectively designed in the cavity of the hollow cylindrical tube and the cavity of the diffusion section. The invention has advantages of adjustable wind speed, wide application range, convenient operation, capability of simulating aerosol testing of dynamic condition, especially has great application value in measuring nuclear particle scale of flare combustion in a simulated airborne conditions.

Description

technical field [0001] The invention relates to a detection device for the flow velocity of an aerosol under dynamic conditions, in particular to a dynamic detection wind tunnel of a straight-way stepless speed regulation aerosol. Background technique [0002] Aerosol is a general term for solid or liquid particles suspended in the air, which is a collection of liquid or solid ions that can be suspended in a gaseous medium for a long time. With the development of industry, there will be a stage of aerosol generation intentionally or unintentionally in many processes. For example, when the feed material passes through a flame, laser or furnace, it may provide suitable particles for the generation of aerosol. Whether it is to study the risk assessment of aerosols on human health or to control the production process to produce a satisfactory aerosol system, people need many tools to understand and measure aerosols. However, in some cases, the existing measurement methods cannot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24G01N15/00G01M9/02
Inventor 刘红杰陈跃杨文武玉忠王建平徐鸣之杨连英王晨
Owner CHINESE ACAD OF METEOROLOGICAL SCI
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