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Constant speed mechanical water sampling device and sampling method

A technology of sampling device and mechanical water, which is applied in sampling device, material absorption and weighing, etc., can solve the problems of inability to accurately capture the carrying amount of mechanical water, inability to achieve isokinetic sampling, inability to meet the requirements of content testing, etc. The effect of accurate measurement of mechanical water content blank, simple and feasible operation method, and simple structure

Active Publication Date: 2011-06-22
MAANSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since mechanical water vapor exists in the form of gas-liquid mixture under supersaturated working conditions, the above-mentioned wet and dry bulb method, condensation method, and gravimetric method cannot achieve isokinetic sampling, that is, they cannot accurately capture the water vapor in the flow process. The carrying capacity of mechanical water, so it cannot meet the test requirements of supersaturated mechanical water content

Method used

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  • Constant speed mechanical water sampling device and sampling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Utilize the sampling method of described isokinetic mechanical water sampling device, comprise the following steps:

[0054] (1) Install a standard caliber sampling nozzle on the electric heating sampling gun 1, and arrange it with the S-type pitot tube and thermocouple 2 at the cross-section of the flue gas in the direction of the flue gas flow; The gun 1 and the smoke hose 6 connected with the flow meter 7 are weighed;

[0055] (2) According to the requirements of the technological process, the constant velocity sampling mechanical water measuring device is connected, and the temperature of the electric heating controller 3 is controlled to be 75°C, and the temperature of the cooling water tank is 3°C;

[0056](3) Input measured flue gas density 0.50, sampling nozzle diameter, parameters such as atmospheric pressure about 101.25kpa in single-chip microcomputer 10; , control and adjust the speed and flow rate of the air pump 8 to ensure that the intake flow rate of th...

Embodiment 2

[0059] Utilize the sampling method of described isokinetic mechanical water sampling device, comprise the following steps:

[0060] (1) Install a standard caliber sampling nozzle on the electric heating sampling gun 1, and arrange it with the S-type pitot tube and thermocouple 2 at the cross-section of the flue gas in the direction of the flue gas flow; The gun 1 and the smoke hose 6 connected with the flow meter 7 are weighed;

[0061] (2) Connect the constant velocity sampling mechanical water measuring device according to the requirements of the technological process, and control the temperature of the electric heating controller 3 to be 85° C., and the temperature of the cooling water tank to be 7° C.;

[0062] (3) Input measured flue gas density 1.50kg / Nm in the single-chip microcomputer 10, sampling nozzle diameter, parameters such as atmospheric pressure about 101.25kpa; Pressure and other data, control and adjust the speed and flow of the air pump 8, to ensure that th...

Embodiment 3

[0065] Utilize the sampling method of described isokinetic mechanical water sampling device, comprise the following steps:

[0066] (1) Install a standard caliber sampling nozzle on the electric heating sampling gun 1, and arrange it with the S-type pitot tube and thermocouple 2 at the cross-section of the flue gas in the direction of the flue gas flow; The gun 1 and the smoke hose 6 connected with the flow meter 7 are weighed;

[0067] (2) Connect the constant velocity sampling mechanical water measuring device according to the requirements of the technological process, and control the temperature of the electric heating controller 3 to be 80°C, and the temperature of the cooling water tank to be 5°C;

[0068] (3) Input measured flue gas density 1.0kg / Nm in the single-chip microcomputer 10, sampling nozzle diameter, parameters such as atmospheric pressure about 101.25kpa; Pressure and other data, control and adjust the speed and flow of the air pump 8, to ensure that the int...

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Abstract

The invention discloses a constant speed mechanical water sampling device and a sampling method. The constant speed mechanical water sampling device comprises a flue, an electric heating sampling gun, an electric heating controller, an absorption bottle group, a cooling water tank, a flow meter, a sucking pump, a hygrometer and a singlechip, wherein the electric heating sampling gun is arranged at the position of the section of the flue, is provided with an S-shaped pitot tube and a thermocouple, and is connected with the inlet of the absorption bottle group through a flue gas hose; the absorption bottle group is arranged in the cooling water tank; the electric heating sampling gun is connected with the electric heating controller; one side of the flow meter is connected with the outlet of the absorption bottle group through the flue gas hose, and the other side of the flow meter is connected with one side of the sucking pump through the flue gas hose; the hydrometer is connected with the other side of the sucking pump through the flue gas hose; and the electric heating sampling gun, the flow meter and the sucking pump are connected with the singlechip through a signal connecting line. The sampling method by using the constant speed mechanical water sampling device comprises four steps. By the device and the method, the requirement of accurately measuring the content of mechanical water in a supersaturated state can be met.

Description

technical field [0001] The invention relates to the fields of thermal engineering and environmental protection detection in the iron and steel industry, in particular to a constant-velocity mechanical water sampling device and a sampling method. Background technique [0002] The moisture measurement methods stipulated in GB / T16157-1996 "Determination of Particulate Matter in Exhaust from Stationary Pollution Sources and Sampling Methods of Gaseous Pollutants" include wet and dry bulb method, condensation method, and gravimetric method. The scope of application is the measurement of water vapor in an unsaturated state. However, as far as the blast furnace gas and converter gas wet dedusting process is concerned in the iron and steel industry, the liquid water existing in the supersaturated state, that is, the mechanical water content is the basic index reflecting the effect of dedusting and dehumidification and the adjustment of process parameters. Since mechanical water vapo...

Claims

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Application Information

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IPC IPC(8): G01N1/24G01N5/02
Inventor 周劲军陈广言
Owner MAANSHAN IRON & STEEL CO LTD
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