Sulfur hexafluoride/nitrogen mixed gas inflating device and method
A technology of mixed gas and sulfur hexafluoride, which is applied in container filling method, container discharge method, gas/liquid distribution and storage, etc., can solve the problems that there are no reports on engineering applications and few researches on mixed gas inflatable devices. , to meet the requirements of convenient operation, low cost, and meet the requirements of insulation
Active Publication Date: 2017-12-15
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
Method used
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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 interface, a monitoring module, a flow control valve group, a vacuuming 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; S1, S2 are used as air inlet ports, respectively connected to SF 6 Cylinder 2 and N 2 Cylinder 3. The five valves use standard interfaces, which can be easily connected with the gas cylinder and the inflation pipeline.
[0019] The valve S4 of the flow control valve group 1 is connected to the vacuum module; the vacuum module is the vacuum pump 5. The vacuum pump 5 can vacuum the pipeline to avoid the influence of residual gas in the pipeline on the mixed gas. The valve S5 ...
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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 inflating devices, and particularly relates to a sulfur hexafluoride / nitrogen mixed gas inflating device and method suitable for high-voltage electrical equipment. Background technique [0002] SF 6 Because of its excellent insulation and arc extinguishing performance, gas is the only insulating gas that has been industrially used so far. It has been widely used in circuit breakers, fully enclosed combined electrical appliances (GIS), power transformers, DC transmission directional valves, current transformers, etc. In the device. However, SF 6 The gas is a strong greenhouse gas, and its global warming coefficient is about carbon dioxide (CO 2 ). Once leaked, it will cause long-term continuous pollution to the environment. 6 The restrictions on the use of gas are becoming more and more stringent, and its replacement and reduced use are the general trend. [0003] In SF 6 Add N 2 , CO 2 Or ordinary gas such as a...
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IPC IPC(8): F17C5/06F17C13/02
CPCF17C5/06F17C13/025F17C2221/031F17C2227/046F17C2250/0626F17C2250/075
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