Road surface retention dust load measuring device and measuring method

A measurement device and load technology, applied in measurement devices, suspension and porous material analysis, particle suspension analysis, etc., can solve the problems of poor representation, low efficiency, small sampling area, etc., and achieve the effect of real-time measurement

Inactive Publication Date: 2014-12-24
BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage is that it is inefficient, requires a lot of manpower, cannot guarantee the safety of sampling personnel, and at the same time, the sampling area is small and the representativeness is poor.

Method used

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  • Road surface retention dust load measuring device and measuring method
  • Road surface retention dust load measuring device and measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] refer to figure 1 and figure 2 , the present embodiment provides a road area dust load measuring device, including a first sampling pipeline 1, a first flow rate measuring device 2, a first particle concentration measuring device 3, a second flow rate measuring device 4, a first gas delivery device 5. The second sampling pipeline 6, the second gas delivery device 7, the third flow rate measuring device 8 and the second particle concentration measuring device 9;

[0038] One end of the first sampling line 1 is a sampling port, and the first sampling line 1 is provided with a first flow rate measuring device 2, a first particle concentration measuring device 3, and a second flow rate measuring device in sequence along the gas flow direction. 4 and the first gas delivery device 5; to measure the flow rate of the gas entering the first sampling pipeline 1 through the first flow rate measuring device 2, and flow through the first particle concentration measuring device 3 t...

Embodiment 2

[0051] refer to figure 1 and figure 2 , the present embodiment provides a method for measuring road dust load using the above-mentioned road dust load measuring device, comprising the following steps:

[0052] S10. Arranging the first sampling pipeline 1 and the second sampling pipeline 6 on the body of the sampling vehicle, and setting the sampling port of the first sampling pipeline 1 at the lower part of the vehicle body, and the second sampling pipeline 6 The sampling port of the sampling pipeline 2 is located on the top of the vehicle;

[0053] S20. Driving the vehicle on the road to be tested at a certain speed, the formal speed of the vehicle is s, and the unit is km / h;

[0054] S30, start the first gas delivery device 5, and control the flow velocity of the gas in the first sampling pipeline 1 to 4m / s;

[0055] S40. Transmit the detected particle concentration by the first particle concentration measuring device 3 to the computer, and the data measured by the first...

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Abstract

The invention discloses a road surface retention dust load measuring device and measuring method. The road surface retention dust load measuring device comprises a first sampling pipeline, a first flow velocity measuring device, a first particle concentration measuring device, a second flow velocity measuring device, a first gas conveying device, a second sampling pipeline, a second gas conveying device, a third flow velocity measuring device and a second particle concentration measuring device. The surface retention dust load measuring device comprises the first particle concentration measuring device which is used for measuring the concentration of particles raised after driving of a vehicle tire on a road surface and a second particle concentration measuring device which is used for measuring concentration of articles in the background air, the road dust load is calculated through a formula in combination with a measuring result of the first particle concentration measuring device and the second particle concentration measuring device, and accordingly the road dust load measuring device can quickly measure the road surface dust load in real time compared with a measuring device in the prior art.

Description

technical field [0001] The invention relates to a road dust measuring device and a measuring method. Background technique [0002] Dust load on road area refers to the mass of accumulated dust that can pass through a 200-mesh standard sieve (equivalent to a geometric particle size below 75 microns) on a unit road area. The fugitive dust formed when road dust enters the ambient air under certain dynamic conditions is called road dust. [0003] The road dust load is the main factor affecting road dust emission. The road dust load sampling adopts the vacuum collection method, that is, the dust sample of a certain road surface area is collected by a vacuum cleaner, and the dust samples on the road surface are sieved and analyzed in the laboratory to calculate the dust accumulation on the sampled road surface. load. Its disadvantage is that it is inefficient, requires a lot of manpower, cannot guarantee the safety of sampling personnel, and at the same time, the sampling area i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/06
Inventor 樊守彬张东旭闫静
Owner BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION
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