Chamber for trace oxygen analyzer

The chamber comprises a chamber body, an oxygen battery, a lead needle and a sealing cover, the chamber body is of a barrel-shaped structure with a hollow interior and an open bottom, the bottom opening of the chamber body is provided with an internal thread, the side wall of the chamber body extends outwards to form an air inlet pipe opening and an air outlet pipe opening, the oxygen battery is arranged in the chamber body, and the lead needle is arranged in the chamber body. One end of the lead needle penetrates through the top of the cavity body to be connected with the cavity body, the other end of the lead needle is used for being connected with a collector, the sealing cover is provided with external threads, the external threads are matched with the internal threads, and the sealing cover is in threaded connection with an opening in the bottom of the cavity body; the oxygen battery in the chamber body is rapidly replaced, the contact time of the oxygen battery and air is shortened, and the situation th