Gas supply device and method of gas analyzer

Abstract

The embodiment of the invention discloses a gas supply device and a gas supply method of a gas analyzer. The gas supply device is used for supplying gas to the gas analyzer, and comprises a controller, a gas conveying main pipeline and a plurality of gas bottle supporting systems, wherein the gas conveying main pipeline is communicated with the gas analyzer; the gas bottle supporting systems are sequentially distributed along the gas conveying main pipeline; each gas bottle supporting system comprises a gas bottle, a gas conveying branch pipeline, an electrically-operated valve, a pressure reducing valve and a pressure sensor. By presetting the using sequence of the gas bottles, when the used gas bottle reaches a switching condition, the controller switches the gas bottle, and sends out an alarm signal which indicates that the pressure of the gas bottle is low, so that compared with manual switching operation, the switching way provided by the invention is more accurate and reliable; the problem that waste of gas bottle resources or insufficient gas supply caused by the manual switching operation is solved; the labor cost and the time cost are greatly saved.

Description

technical field [0001] The disclosure of the present invention relates to the technical field of automatic control, in particular to a gas supply device and method for a gas analyzer. Background technique [0002] In the process of gas analysis, two kinds of gases are needed for the accuracy of the analysis results, one is the standard gas used to calibrate the range and zero point of the analyzer; the other is the carrier gas used to carry the required sample gas. Gas and combustion gas to help the sample gas burn. And the carrier gas and combustion gas are consumed all the time. If the supply of carrier gas or combustion gas is insufficient during consumption, it will directly affect the results of gas analysis and display corresponding alarms. [0003] In daily inspections, it is necessary to replace the gas cylinder in time when the carrier gas or combustion gas required for the gas analyzer system is almost exhausted, and this work occupies a large proportion of the da...

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Problems solved by technology

[0005] The embodiment of the present invention provides a gas analyzer gas supply device and method to solve the problem of waste of resources due to the replacement of gas cylinders in advance when switching gas cylinders by pure manual operation in the prior art, or the failure to replace gas cylinders in time Insufficient air supply problem

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