Automatic multi-path persistent gas-supply optional sampling device
An automatic, air source technology, applied in the direction of sampling devices, measuring devices, instruments, etc., can solve the problem of difficult and flexible selection of sampling ports, and achieve the effect of small flow channel, simple structure and easy processing
Active Publication Date: 2012-01-25
SHANGHAI SUNNY HENGPING SCI INSTR
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From the above requirements, it can be seen that the sampling device requires continuous work, and should be able to freely select the sampling port, and flexibly detect various data. However, the existing rotary valve technology is difficult to achieve flexible selection of the sampling port, and can only sample one by one.
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[0014] The present invention will be further described below in conjunction with accompanying drawing:
[0015] like figure 1 and figure 2 The automatic multi-channel continuous gas supply optional sampling device shown includes a multi-channel connection module, multiple multi-channel gas source inlets 4, a waste gas exhaust port 5, an output port 2 for providing sample gas to the detection instrument, A sample gas channel 1 and a plurality of solenoid valves, the multi-channel gas source inlet 4, waste gas exhaust port 5, output port 2, sample gas channel 1 and solenoid valves are all arranged in the multi-channel connection module above; it is characterized in that: the exhaust gas discharge port 5 is connected to the sample gas channel 1 through a normally open solenoid valve 6, when not working, the sample gas in the sample gas channel 1 is discharged from the exhaust gas discharge port 5; said each multi-channel gas source sampling port 4 communicates with the sample ...
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The invention relates to a sample gas optional sampling device, in particular to an automatic multi-path persistent gas-supply optional sampling device suitable for an industrial mass spectrometer. In the device, a multi-channel connecting module is provided with a plurality of multi-path gas source sample injection ports, a waste gas exhaust port, an output port for supplying sample gas to a detecting instrument, a sample gas path channel and a plurality of control electromagnetic valves. When the device is not used for sampling, the sample gas path channel is connected with the exhaust port, and gas is automatically exhausted without gathering in the module to continuously raise the pressure; when a gas sample needs to enter a path, a control circuit sends out a signal to a normally closed electromagnetic valve of the path, and then the normally closed electromagnetic valve is switched on to ensure that the sample injection port is connected with the sample gas path channel; and after the sample injection is finished, the normally closed electromagnetic valve acts to return to a normal state so as to finish a sample injection process. The sample gas optional sampling device has the advantages of simple structure and easy processing, and meanwhile, by depending on the fluid structure of a connecting block, any gas source can be sampled and sent to the detecting instrument, and all the gas sources also can be guaranteed to have no cross-infections.
Description
technical field [0001] The invention relates to a sample gas optional sampling device, in particular to an automatic multi-channel continuous gas supply optional sampling device suitable for industrial mass spectrometers. Background technique [0002] A mass spectrometer is an instrument for mass spectrometry. According to the principle that charged particles can be deflected in an electromagnetic field, it is an instrument that separates and detects the composition of substances according to the mass difference of atoms, molecules or molecular fragments. Industrial mass spectrometers are important detection tools used in modern scientific research, geology, petroleum, medicine, environmental protection, agriculture and other fields. They are generally used online continuously for real-time monitoring. It often needs to detect various gas sources separately, and these detection gas sources are continuously supplied with gas. [0003] Industrial mass spectrometer is an impor...
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IPC IPC(8): G01N1/22G01N27/62
Inventor 许生蛟王华
Owner SHANGHAI SUNNY HENGPING SCI INSTR