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Dust sampler and dust concentration calibrating device using dust sampler

A technology of dust concentration and calibration device, which is applied in the field of dust sampler and dust concentration calibration device, can solve the problems of inability to accurately display the dust flow and the inability to accurately calibrate the dust concentration sensor, and achieve the effect of reducing the disturbance problem.

Active Publication Date: 2015-04-08
GL TECH CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

However, the existing dust sampler cannot guarantee that the flow rate of the wind tunnel is the same as the sampling flow rate, so the flow meter of the dust sampler cannot accurately display the dust flow rate, and the dust concentration sensor cannot be calibrated accurately

Method used

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  • Dust sampler and dust concentration calibrating device using dust sampler
  • Dust sampler and dust concentration calibrating device using dust sampler
  • Dust sampler and dust concentration calibrating device using dust sampler

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Embodiment Construction

[0022] Examples of dust concentration calibration devices Figure 1~4 As shown: including wind tunnel 13, dust concentration sensor 14 and dust sampler 15, the dust concentration sensor and dust sampler are at the same cross-sectional position of the wind tunnel, which helps to ensure that the dust concentration sensor 14 and dust sampler 15 are located The dust concentration in the environment is consistent. The dust sampler includes a sampling pipeline 18 provided with an air pump 15 and connected to the wind tunnel through a sampling head 17. The sampling pipeline is sequentially provided with a filter membrane, a steady flow box 41, a differential pressure gauge 49, a flow regulating pipeline and an air pump 45. The air pump is a negative pressure pump, in which a flow meter and a flow regulating valve are installed on the flow regulating pipeline. The flow regulating pipeline includes a first flow regulating pipeline section and a second flow regulating pipeline section a...

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Abstract

The invention relates to a dust sampler and a dust concentration calibrating device using the dust sampler. The dust sampler comprises a sampling pipeline provided with an air pump, wherein a differential pressure gauge and a flow regulating pipeline are serially arranged on the sampling pipeline, and a flow meter and a flow regulating valve are arranged on the flow regulating pipeline. When the dust sampler is used, the sampling pipeline is connected onto an air tunnel, an air pump is started, the flow regulating valve is regulated to a sampling flow of a dust concentration sensor; meanwhile, the flow velocity inside the air tunnel is regulated until the differential pressure gauge displays zero, at the moment, the flow velocity of an air flow in the air tunnel is equal to that in the sampling pipeline, at the moment, an error between the dust concentration in the sampling pipeline and the dust concentration in the air tunnel is minimal. The dust sampler is designed according to an air flow balancing principle, namely, when an exhaust pressure is equal to a suction pressure, the additional resistance of the pipeline is minimal, and at the moment, dust accurate flow is displayed on the flow meter.

Description

technical field [0001] The invention relates to a dust sampler and a dust concentration calibration device using the dust sampler. Background technique [0002] Dust refers to particles suspended in the air. Too much or too little dust in the atmosphere will have a catastrophic impact on the environment. In production and life, productive dust is the natural enemy of human health and one of the main causes of various diseases, especially coal mine dust, which seriously endangers the health of workers and causes them to suffer from pneumoconiosis. Too high also lurks the danger of explosion. Every year, the number of casualties caused by dust disasters is extremely large, which has caused huge economic losses to the country. In order to strictly control the dust concentration, it is necessary to monitor the dust concentration. The commonly used concentration monitoring equipment is the dust concentration sensor. The quality and accuracy of the dust concentration sensor is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24G01N15/06
Inventor 赵彤宇张一新李波郭洪斌朱金明
Owner GL TECH CO LTD
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