A fully automatic sampling device

Abstract

The invention discloses a full-automatic sampling device, and belongs to the technical field of gas analysis. The full-automatic sampling device comprises a filter, and is characterized by further comprising a heat bath thermostat, wherein the heat bath thermostat comprises a stainless steel cylinder, an electric heater and a temperature control setter; the filter comprise a stainless steel tube and a stainless steel woven filter element; a heating tube is arranged inside the stainless steel woven filter element; the stainless steel tube and the stainless steel cylinder are connected through a flange; a sampling tube is arranged inside the stainless steel cylinder; a solenoid valve is connected with the sampling tube; the sampling tube is communicated with the sampling stainless steel woven filter element; a gas inlet tube is connected with the stainless steel cylinder; a back blowing solenoid valve is connected with the gas inlet tube; an escape pipe is arranged inside the stainless steel tube; a needle valve is connected with the escape pipe. Due to adoption of the heat bath thermostat, heat balance can be maintained, a sample gas is kept at relatively high temperature in the whole sampling process, moisture in the sample gas can be prevented from condensation and liquidation, the sample gas can be prevented from distortion, sampling stability can be ensured, and the sampling efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of gas analysis, in particular to a fully automatic sampling method suitable for continuous sampling of post-combustion industrial flue gas, kiln gas, blast furnace gas, open hearth furnace top blowing gas, metallurgical furnace gas and waste gas from waste incineration device. Background technique [0002] As the sample gas processing technology becomes more and more mature, in recent years, the development of online gas analysis is also getting faster and faster. On-line gas analysis is widely used in industries such as petroleum, chemical industry, building materials, metallurgy, pharmaceuticals, food, energy, energy conservation, environmental protection, and resource development. And production capacity, quality control, promotion of technological transformation and other aspects have made great contributions. [0003] The core component in online gas analysis is the sample gas processing system. The...

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Problems solved by technology

[0010] The sampling device disclosed in this patent document does not have backflushing. After the sampling device works for a long time, its filter and pipeline are easily blocked by dust, resulting in poor sampling stability and affecting sampling efficiency.

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