Ozone standard gas generating apparatus
A standard gas and generator technology, applied in the field of ozone standard gas generator, to achieve the effect of easy transportation
Inactive Publication Date: 2008-05-21
NAT INST OF METROLOGY CHINA
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[0003] The purpose of the present invention is to provide a preparation device for producing stable ozone mixed gas by using low-pressure mercury lamp radiation method, photosensitive detection control technology and gas dynamic quantitative dilution technology at normal temperature and pressure, so as to solve the problem that the trace ozone standard gas cannot be used by the usual method. Disadvantages of standard gas configuration methods for preparation, storage, and transportation
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[0008] The ozone standard gas generating device is composed of three parts: a low-pressure mercury lamp micro-radiation system, a photosensitive detection control system and a dynamic quantitative dilution system. The gas source 1 generates high-purity oxygen or air at a certain pressure. The purifier 3 removes impurities such as water and ozone, and the mass flow meter 4 measures the flow rate and further stabilizes the flow, and then divides it into two paths of gas: one path of gas enters the constant temperature and low pressure mercury lamp micro-zone radiation pool 5 containing the ozone generation source, and the radiation pool 5 The temperature of the radiation pool is kept constant by the radiation pool temperature controller 9, the radiation pool temperature controller 9, the lamp current controller 10 and the system air-cooling part 12 are connected to the system power supply part 11, and the lamp current controller 10 is connected to the system air-cooling part 12 ,...
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The ozone standard gas generating device is composed of three parts: a low-pressure mercury lamp micro-radiation system, a photosensitive detection control system and a dynamic quantitative dilution system. The mass flowmeter stabilizes the flow and measures the flow. The gas is divided into two paths: one path flows through the micro-radiation pool of the low-pressure mercury lamp to generate a certain concentration of ozone mixed gas, which enters the ozone dilution pool after the flow is controlled by the rotameter. The temperature of the radiation pool and the lamp current are kept constant by the temperature control system and the photosensitive detection control system respectively, and the other path is controlled by the rotameter flowmeter, and then directly enters the ozone dilution pool, and the two gases are fully mixed in the dilution pool to prepare ozone standard mixed gas, The standard gas port leads to the application or is evacuated by the vent port. This device will be used as a secondary standard device for ozone measurement, providing an effective method for realizing the accurate unification and traceability of ozone measurement data in my country.
Description
technical field [0001] The invention relates to an ozone standard gas generating device, which belongs to a preparation device for generating stable ozone mixed gas by using low-pressure mercury lamp radiation method, photosensitive detection control technology and gas dynamic quantitative dilution technology. Background technique [0002] Ozone is the main participant and driving force for the evolution of the chemical toxicity of air pollutants, and is the main monitoring object for predicting the hazards of air pollutants. With the establishment of international organizations' ozone limit standards and analysis methods, the development of high-precision ozone measurement standards Gradually mentioned on the agenda, the first research project of the International Bureau of Weights and Measures after its establishment in 1999 was the analysis of trace ozone and the establishment of measurement base standards. China has successively promulgated a series of trace ozone analysi...
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IPC IPC(8): C01B13/11
Inventor 周泽义
Owner NAT INST OF METROLOGY CHINA