Quartz-Raman-signal-free gas chamber device for Raman spectrum detection

The invention discloses a quartz-Raman-signal-free gas chamber device for Raman spectrum detection. The quartz-Raman-signal-free gas chamber device comprises a first gas chamber, a capillary tube and a second gas chamber, the first gas chamber comprises a first diaphragm and a dichroscope; the second air chamber comprises a second channel and a second diaphragm; the second diaphragm is farther from the capillary tube and is in an inclined state, during application, laser is reflected into the capillary tube by the dichroscope after passing through the first diaphragm and reacts with gas to be detected to generate a Raman signal, then the laser passes through the second channel and the second diaphragm, and the Raman signal is reflected by the second diaphragm and penetrates out of the dichroscope; a quartz Raman signal generated by the first diaphragm penetrates out of the dichroscope, a quartz Raman signal generated by the second diaphragm cannot be captured by the capillary tube, and the second diaphragm is