System and method for sampling metal ions in corrosive gas

A system for sampling metal ions in a corrosive gas, comprising:

• a sampling bottle internally provided with a sampling chamber, wherein the sampling bottle is provided with a first sampling pipeline and a second sampling pipeline, the first sampling pipeline and the second sampling pipeline are communicated with the sampling chamber, and the second sampling pipeline is provided with a discharge valve;
• a vacuuming pipeline connected with the first sampling pipeline, wherein the vacuuming pipeline is provided with a first vacuuming valve, the vacuuming pipeline is provided with a vacuuming device, and the vacuuming device is configured to vacuum the sampling chamber;
• a replacement gas pipeline connected with the first sampling pipeline, wherein the replacement gas pipeline is provided with a replacement valve, and the replacement gas pipeline is configured to blow a replacement gas into the sampling chamber;
• an injection pipeline connected with the first sampling pipeline, wherein the injection pipeline is provided with an injection valve, and the injection pipeline is configured to inject a sample gas into the sampling chamber;
• and
• a purge gas pipeline connected with the first sampling pipeline, wherein the purge gas pipeline is provided with a purge valve, and the purge gas pipeline is configured to slowly blow a purge gas into the sampling chamber and blow away a corrosive gas in the sample gas,
• wherein the purge gas pipeline comprises the replacement gas pipeline and the purge valve is the replacement valve;
• the vacuuming device is a vacuum generator, and the vacuum generator comprises a gas inlet port, a gas outlet port, and a negative pressure port;
• the vacuuming pipeline comprises a vacuum power pipeline, a second vacuum pipeline, and a third vacuum pipeline;
• a first end of the vacuum power pipeline is connected with the gas inlet port;
• a first end of the second vacuum pipeline is connected with the negative pressure port;
• and a first end of the third vacuum pipeline is connected with the second vacuum pipeline, and a second end of the third vacuum pipeline is connected with the first sampling pipeline;
• a first end of the purge gas pipeline is connected with the first sampling pipeline, and a second end of the purge gas pipeline is connected with a second end of the vacuum power pipeline and is provided with a gas source inlet;
• a second end of the second vacuum pipeline is connected with the purge gas pipeline;
• the first vacuuming valve is arranged on the third vacuum pipeline;
• the vacuum power pipeline is provided with a vacuum power valve, and the second vacuum pipeline is provided with a second vacuuming valve;
• a location of the second vacuuming valve is closer to the negative pressure port than a junction of the second vacuum pipeline and the third vacuum pipeline;
• and a location of the purge valve is closer to the gas source inlet than a junction of the purge gas pipeline and the second vacuum pipeline;
• the first sampling pipeline is provided with a first valve;
• a junction of the injection pipeline and the first sampling pipeline is closer to the sampling bottle than a location of the first valve;
• and the location of the first valve is closer to the sampling bottle than a junction of the third vacuum pipeline and the first sampling pipeline and a junction of the purge gas pipeline and the first sampling pipeline.