System and method for dynamically distributing gases of volatile liquid under room temperature and normal pressure

Abstract

The invention provides a system and a method for dynamically distributing gases of volatile liquid under room temperature and normal pressure. The system comprises a gas generator, a volatile liquid control device, a gas proportioning device and a gas analysis device, wherein the volatile liquid control device controls air to enter the gas generator; the gas generator converts the volatile liquidinto the gases, and introduces the gases into the gas proportioning device; the gas proportioning device is connected with the gas analysis device; and the gas analysis device is connected with the volatile liquid control device by a signal feedback control line. In the system and the method, the volatile liquid control device controls the injection of the air into the gas generator to convert the volatile liquid in the gas generator into the gases, and a conversion speed, a conversion degree, an injection speed and an injection amount all can be effectively and automatically controlled, so the gas distribution efficiency is greatly improved; and simultaneously, a polytetrafluoroethylene layer is coated on the inner side of the gas proportioning device, and gas pipelines adopt polytetrafluoroethylene pipes so as to effectively reduce the absorption of the gases and improve the distribution accuracy.

Description

technical field [0001] The invention relates to a system and method for gas preparation of a volatile liquid, in particular to a dynamic gas distribution system and a gas distribution method for a volatile liquid under normal pressure and room temperature. Background technique [0002] Standard gases for volatile liquids are in great demand in industrial production and laboratory work. For example, measurement departments at all levels, manufacturers of flammable gas alarms, and calibration inspections of hand-held drunk driving detectors all need corresponding standards. gas. However, such standard gases generally have adsorption properties, and there will be large deviations when used in different periods, making the calibration or detection results inaccurate. Moreover, the standard gas preparation of volatile liquids sometimes requires a certain temperature and pressure, and the cost is relatively high. Contents of the invention [0003] In order to solve the above p...

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Problems solved by technology

However, such standard gases are generally adsorptive, and there will be large deviations when used in different periods, making the calibration or test results inaccurate

Moreover, the standard gas preparation of volatile liquids sometimes requires a certain temperature and pressure, and the cost is relatively high

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