How to reduce the harm of sulfur hexafluoride gas moisture?- SF6在线监测系统_SF6检漏仪_SF6传感器_SF6密度继电器

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How to reduce the harm of sulfur hexafluoride gas moisture?

发布时间：2018-11-20 来源：ydlcb 浏览次数：44次

In fact, in the process of SF6 gas production will be affected by the material of the production equipment, process conditions and other factors, in addition to the water generated in the synthesis process, in the gas filling process may also be mixed with a small amount of water. In order to prevent the possible harm of sulfur hexafluoride gas moisture, the state has strict regulations on the quality indicators of SF6 gas, requiring manufacturers to provide biological test non-toxic certificates when supplying, and requiring the International Electrotechnical Commission (IEC) and many countries have formulated quality standards for SF6 products. In addition to the water in the gas, the equipment may also be mixed with water! The moisture brought in by the insulation. The reason is that in the long-term operation, the water contained in the organic insulation material is slowly released, resulting in an increase in water content. Moisture brought in by the adsorbent. The reason is that the adsorbent activation treatment time is too short, and the exposure time to air during installation is too long. Water seeping through the seal. The reason is that the partial pressure of water vapor in the atmosphere is dozens of times or even hundreds of times that inside the equipment, and water infiltration under the action of pressure difference. The device is leaking. The reason is that the water vapor in the air at the inflatable interface, pipe joints, and sand holes of cast aluminum parts penetrates into the inside of the equipment, causing the rise of water. This relief is the cause of the possible harm of sulfur hexafluoride gas moisture.

1. Before filling the gas, the water content of the gas must be measured, and the gas that does not meet the standard (stipulated in the relevant standards in China, the water content in the new SF6 gas shall not be large: 64μL) shall not be used.

2. Optimize the shell design of the equipment and select materials with good density and poor thermal conductivity as the shell. Improve the sealing structure of SF6 circuit breaker, improve the processing accuracy and assembly quality of sealing surface, select high quality sealing gaskets, reduce the entry of external water vapor.

3. Strict process requirements, parts must be cleaned into the oven for drying treatment, if the parts themselves moisture is very small, even if the temperature rises, its trace moisture value can also meet the technical requirements.

4, to strictly factory testing and according to the temperature, the season to adjust the qualified standards of water value, such as winter can control the trace water value below 801μL/L, summer control below 120μLL. In this way, the requirement of trace moisture value not exceeding 150μLL at different temperatures can be met.

5. We can not control the moisture in the equipment, but the quality of the gas can be guaranteed. To reduce the harm of sulfur hexafluoride gas moisture, Wevers Inspection supplies high-purity sulfur hexafluoride gas moisture test equipment and advanced sulfur hexafluoride gas leak detection equipment to ensure that the quality of each SF6 gas detection equipment meets the user's inspection requirements.

6. Gas route charging port (pointer pressure gauge interface), storage cylinder, gas storage globe valve, pressure regulating cylinder, density relay control globe valve, pressure and temperature sensor, signal transmitter, microprocessor and other parts.