Gas mixing system of heptafluoroisobutyronitrile

Abstract

The invention provides a gas mixing system of heptafluoroisobutyronitrile, and the gas mixing system comprises a gas mixing tank and is characterized in that the gas mixing tank is connected with a gas circulating mixing pipeline with a mixer and a gas detection pipeline; the gas circulating mixing pipeline enters the mixer from the top and the bottom of the gas mixing tank at the same time and then returns from the middle of the gas mixing tank through the circulating pump, so the gas is circularly stirred, the operation is simple and convenient, and uniform mixing of heptafluoroisobutyronitrile mixed gas can be well realized. Meanwhile, the gas mixing system provided by the invention can intuitively observe the mixing condition of the gas and judge the mixing end point of the heptafluoroisobutyronitrile mixed gas by detecting the gas in the gas mixing tank 1 in real time, so the mixing efficiency is greatly improved, and the time is saved.

Description

technical field [0001] The invention belongs to the technical field of gas mixing and analysis and detection, and in particular relates to a gas mixing system of heptafluoroisobutyronitrile. Background technique [0002] Heptafluoroisobutyronitrile (hereinafter referred to as "C 4 f 7 N") has excellent insulation performance and environmental protection performance, C 4 f 7 The dielectric strength of N is about SF at the same pressure 6 2 times of C 4 f 7 The GWP value of N is only 1705, which is considered to be the most promising alternative to sulfur hexafluoride (hereinafter referred to as "SF 6 ”) A new generation of environmentally friendly insulating gas. But due to C 4 f 7 N has a high liquefaction temperature, which makes it difficult to meet the use under cold conditions in practical applications. Therefore, the use of C 4 f 7 N and N 2 , CO 2 A binary mixture of gases with low boiling points is used as C 4 f 7 N is a technical solution applied to pow...

AI Technical Summary

Problems solved by technology

However, the existing gas mixing method usually adopts the method of metering separately and rushing in one after another. The mixed gas is mixed in the gas mixing tank or electrical equipment statically, and the uniform mixing of the two gases cannot be guaranteed.

Also, there is currently no detection of C 4 f 7 The means of N gas mixing process cannot determine the end point of gas mixing, and can only ensure the uniformity of gas mixing through long-term mixing, which wastes time and reduces work efficiency

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