Why use an SF6 leak detector?- 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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Why use an SF6 leak detector?

发布时间：2017-05-15 来源：ydlcb 浏览次数：185次

SF6 leak detector is an effective inspection tool for SF6 electrical equipment leak detection, and it is necessary to use the instrument in the handover and overhaul. And we have to detect the leakage of the switch every year, and make the corresponding SF6 electrical equipment leakage report is an essential workflow.

Once the SF6 switch leaks, the SF6 gas insulation performance inside the SF6 switch will be greatly reduced, and an arc will be generated inside the switch, causing great damage to the switch and connecting equipment. Similarly, SF6 gas causes serious environmental pollution to the air. In addition, SF6 decomposing into hydrogen fluoride, sulfur dioxide, sulfur tetrafluoride, hydrogen sulfide and other toxic substances under high pressure and high temperature will cause acute edema of lung tissue, affect oxygen exchange in the lungs, and lead to asphyxia and death.

The use of SF6 leak detector has reached an unprecedented scope of universality, in all areas of life have its busy figure, it can be said to contribute to the improvement of productivity, SF6 leak detector used in the field of measurement and inspection, it can detect the general instrument can not detect loopholes and defects, Moreover, the method he used in the inspection process is also the current advanced scientific method, which is very in line with the requirements of detection and measurement. Many construction personnel use SF6 qualitative leak detector and SF6 quantitative leak detector as the measurement equipment for detecting sulfur hexafluoride.

The SF6 leak detector is used by the power equipment factory as the security equipment for their inspection of chemical toxic gas leaks, and the power plant uses it as the security guarantee for the detection of power switches. The SF6 gas in the SF6 leak detector is a colorless and odorless gas, which acts as insulation in high-pressure equipment. So in order to maintain the normal operation of high-pressure equipment and protect people's lives, the SF6 gas leak detector can be said to have a great credit. For example, there are many types of air conditioners in some large factories, and air conditioners contain a large amount of fluorine gas. If the leakage of fluorine gas in air conditioners is too serious, it will cause certain mild poisoning and cause great pollution to the air environment. If the SF6 leak detector is installed, this problem can be solved and the gas leakage can be monitored in real time.

1, << State Grid Company power equipment handover and preventive test Procedures >> In the preparation of SF6 circuit breaker and SF6 gas leakage clause under GIS clearly stipulates: At present, the sensitivity of the SF6 leak detector is already high, which can meet the requirements of the annual leakage rate of no more than 0.5%, and the original dressing method is very inaccurate, and the field implementation is difficult, and the standard adds "can use a leak detector with a sensitivity of not less than 1×10-6(volume ratio) to detect no leakage on each sealing surface;

DL/T "Electric Power Equipment Preventive Test Procedures" and GB 50150-2006 "Electrical Equipment installation engineering Electrical equipment handover test Standard", "GB 12022-2006 Industrial sulfur hexafluoride"

2, << State Grid Company power safety working procedures (substation and power plant part) in the sulfur hexafluoride electrical equipment work indoors, the equipment is filled with SF6 gas, the relative humidity of the surrounding environment should not be more than 80%, and the ventilation system should be opened, and to avoid SF6 gas leakage into the work area. The SF6 gas content in the working area air shall not exceed 1000UL/L (1000PPM).

When entering the SF6 distribution unit room, if there is no SF6 gas content display at the entrance, the staff should first ventilate for 15min and measure the SF6 gas content with a leak detector. Try to avoid one person entering the SF6 distribution unit room for inspection, and do not allow one person to enter the maintenance work. When entering the low area of SF6 distribution device or cable trench for work, the oxygen content (not less than 18%) and SF6 gas content should be tested first.

In order to prevent SF6 (sulfur hexafluoride) switch insulation and arc suppression deterioration and personal safety (more than 1000PPM of SF6 gas in the room will make people suffocate). In addition, in order to avoid a large-scale power outage due to the failure caused by the SF6 switch. The "National Safety Operation Regulations" clearly requires the use of SF6 leak detection instrument to check the SF6 switch, SF6 transformer and SF6 transformer once a year to see whether there is leakage, whether the size of the leakage does not exceed the national regulations, and find the leak point to solve the leakage problem in time.