Gas dew point generating device

Abstract

The invention discloses a gas dew point generating device, and belongs to the technical field of metering and testing. The device mainly comprises a valve, a dew point saturation system, a heat exchange system, a constant temperature system and a pipeline heating system. The dew point saturation system is mainly composed of a low dew point saturator, a high dew point saturator and a water collecting chamber. By opening different valves, gas enters the dew point saturation system, and saturated gas with different dew points is achieved. The dew point saturation system is provided with the water collecting chamber, gas passes through the water collecting chamber from bottom to top after being saturated by the high dew point saturator, redundant water carried in the saturated gas is collected, and therefore the problem of supersaturation of the high dew point gas is effectively solved. A plurality of layers of cross-arranged arc stacked discs are arranged in the low dew point saturator, and gas flows out from the bottom after passing through an S-shaped route from top to bottom and enters the water collecting chamber. According to the invention, standard dew point gas in a wide range can be continuously output in the same dew point generating device, and gas dew point metering is facilitated. The device has the advantages of being simple in structure and low in cost.

Description

technical field [0001] The invention relates to a dew point temperature measuring and testing device, in particular to a gas dew point generating device suitable for a wide range of above 0°C and below 0°C, belonging to the technical field of measuring and testing. Background technique [0002] The dew point generator is a widely used metering device in the process of verifying or calibrating gas dew point measuring instruments. [0003] With the development of different fields such as military semiconductor and electrical, it is required that the standard gas dew point generator can continuously output a wide range of standard dew point gas, and the dew point range covers -60 ° C ~ +80 ° C, which requires that the gas dew point generator can be used in both It can work above 0°C, and can work below 0°C, and the dew point range of the saturated moisture generated is wider. At present, none of the existing gas dew point generators can work above 0°C and below 0°C at the same...

AI Technical Summary

Problems solved by technology

At present, none of the existing gas dew point generators can work above 0°C and below 0°C at the same time. For example, the dew point generator using bubbling humidification can only work under the condition of above 0°C; The dew point generator can only work below 0°C, or the maximum dew point temperature cannot exceed 20°C

Therefore, none of the existing gas dew point generators can continuously output the standard dew point gas whose dew point range covers -60°C to 80°C

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