A device and method for inflating sulfur hexafluoride/nitrogen mixed gas
A technology of mixed gas and sulfur hexafluoride, which is applied in the fields of container filling method, container discharge method, gas/liquid distribution and storage, etc. It can solve the problems of little research on mixed gas inflating devices and no reports of engineering applications. , to achieve the effect of meeting the requirements of convenient operation, low cost and insulation
Active Publication Date: 2019-09-17
STATE GRID CORP OF CHINA +2
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Problems solved by technology
[0004] Currently, for SF 6 / N 2 There are few studies on mixed gas inflators, and there are no reports on engineering applications
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[0017] see figure 1 As shown, a sulfur hexafluoride / nitrogen mixed gas charging device of the present invention includes: an air inlet port, a monitoring module, a flow control valve group, a vacuum module and a mixed gas outlet. The inlet port, monitoring module, vacuum module and mixed gas outlet are all connected to the flow control valve group.
[0018] see figure 2 As shown, the flow control valve group 1 is a multi-way valve; the flow control valve group 1 has five valves S1, S2, S3, S4 and S5; 6 Cylinders 2 and N 2 Cylinder 3. The five valves adopt standard interfaces, which can be easily connected with gas cylinders and inflation pipelines.
[0019] The valve S4 of the flow control valve group 1 is connected to the vacuum pumping module; the vacuum pumping module is the vacuum pump 5 . The vacuum pump 5 can vacuumize the pipeline to avoid the influence of the residual gas in the pipeline on the mixed gas. The valve S5 of the flow control valve group 1 is used as...
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The invention discloses a sulfur hexafluoride / nitrogen mixed gas inflating device and method. The sulfur hexafluoride / nitrogen mixed gas inflating device comprises an SF6 gas inlet connector, a N2 gas inlet connector, a monitoring module, a flow control valve set, a vacuumizing module and a gas inflating outlet; the SF6 gas inlet connector, the N2 gas inlet connector, the monitoring module, the vacuumizing module and the gas inflating outlet are all communicated with the flow control valve set; the flow control valve set is a multi-way valve; the flow control valve set is provided with a valve S1, a valve S2, a valve S3, a valve S4 and a valve S5; and the valve S1 is arranged between a SF6 gas bottle and the SF6 gas inlet connector, the valve S2 is arranged between a N2 gas bottle and the N2 gas inlet connector, the valve S3 is arranged between the monitoring module and the multi-way valve, the valve S4 is arranged between the vacuumizing module and the multi-way valve, and the valve S5 is arranged between an air inflation outlet and a to-be-inflated device. According to the sulfur hexafluoride / nitrogen mixed gas inflating device and method, a current transformer is inflated through mixed gas inflating device, the accuracy requirement and the insulation requirement of on-site inflation to the mixed gas proportion and pressure are met, operation is convenient and quick, and cost is low.
Description
technical field [0001] The invention belongs to the technical field of inflators, in particular to a sulfur hexafluoride / nitrogen mixed gas inflator and method suitable for high-voltage electrical equipment. Background technique [0002] SF 6 Due to its excellent insulation and arc extinguishing properties, the gas is the only insulating gas that has been applied in industry so far. It has been widely used in circuit breakers, fully enclosed combined electrical appliances (GIS), power transformers, DC transmission reversing valves and current transformers, etc. in the device. However, SF 6 The gas is a strong greenhouse gas with a global warming coefficient of approximately carbon dioxide (CO 2 ) 23,900 times, once leaked, it will cause long-term and continuous pollution to the environment. 6 The restrictions on the use of gas are becoming more and more stringent, and its replacement and reduction are the general trend. [0003] in SF 6 N 2 , CO 2 Or ordinary gases s...
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IPC IPC(8): F17C5/06F17C13/02
Inventor 杨鼎革吴经锋韩彦华齐卫东盛勇刘伟李鹏程牛博王辰曦李旭尚宇王亚楠丁卫东李嘉
Owner STATE GRID CORP OF CHINA